CVE-2026-80879 (GCVE-0-2026-80879)

Vulnerability from cvelistv5 – Published: 2026-09-04 16:49 – Updated: 2026-09-04 16:49
VLAI
Title
ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write
Summary
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write A circular locking dependency involves INODE_ALLOC_SYSTEM_INODE, EXTENT_ALLOC_SYSTEM_INODE, and ORPHAN_DIR_SYSTEM_INODE. 1. ocfs2_mknod() acquires INODE_ALLOC then EXTENT_ALLOC. 2. ocfs2_dio_end_io_write() acquires EXTENT_ALLOC for unwritten extents, then ORPHAN_DIR via ocfs2_del_inode_from_orphan() while still holding EXTENT_ALLOC. 3. ocfs2_wipe_inode() acquires ORPHAN_DIR then INODE_ALLOC via ocfs2_remove_inode. Break the cycle in ocfs2_dio_end_io_write() by freeing the allocation contexts (releasing EXTENT_ALLOC) before acquiring ORPHAN_DIR. WARNING: possible circular locking dependency detected ------------------------------------------------------ is trying to acquire lock: ffff8881e78b33a0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0x1539/0x43b0 fs/ocfs2/inode.c:1299 but task is already holding lock: ffff8881e78b4fa0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xe97/0x43b0 fs/ocfs2/inode.c:1299 the existing dependency chain (in reverse order) is: -> #2 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}: inode_lock include/linux/fs.h:1029 [inline] ocfs2_del_inode_from_orphan+0x12e/0x7a0 fs/ocfs2/namei.c:2728 ocfs2_dio_end_io+0xf9c/0x1370 fs/ocfs2/aops.c:2418 dio_complete+0x25b/0x790 fs/direct-io.c:281 -> #1 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}: inode_lock include/linux/fs.h:1029 [inline] ocfs2_reserve_suballoc_bits+0x16d/0x4840 fs/ocfs2/suballoc.c:882 ocfs2_reserve_new_metadata_blocks+0x415/0x9a0 fs/ocfs2/suballoc.c:1078 ocfs2_mknod+0x10f3/0x2260 fs/ocfs2/namei.c:351 -> #0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}: __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 down_write+0x96/0x200 kernel/locking/rwsem.c:1625 inode_lock include/linux/fs.h:1029 [inline] ocfs2_remove_inode fs/ocfs2/inode.c:733 [inline] ocfs2_wipe_inode fs/ocfs2/inode.c:896 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline] ocfs2_evict_inode+0x1539/0x43b0 fs/ocfs2/inode.c:1299 Chain exists of: &ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] --> &ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE] --> &ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE] Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]); *** DEADLOCK ***
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 97c03c0e9f73a5049794b3c69ee60fb5e8b0ebd8 , < f0ae0a6ca87dc2d4a789f71cdedb808ba6c16990 (git)
Affected: 1e99bb19994246514d63e656492904176f9d5edd , < 137e8b4823a9a11928428d4ec0a0cacb2f50a769 (git)
Affected: 91e05ac2336d00d5b99fc774be4bd50039084796 , < 4273548e418bd935430d35e9d052870f323441f3 (git)
Affected: 886f97fa59d0bbfa9859fb1a66dd9e014b522d89 , < 49b34bd3ad69611af03590a23abf2cda9ac1073d (git)
Affected: ea5bb1d20da756e4f41a48dad42b2e7d6e73f71e , < ff187c502b39389b0d732cb7050a3db8e5ebfcd6 (git)
Affected: 3c636a3edca9c3f180b3079f94fe7e115730d9c6 , < ae1f3460833d3e427420ab260278ec0e45d68c86 (git)
Affected: d647c5b2fbf81560818dacade360abc8c00a9665 , < f3dd1e534e9de64669415f8239e0094afecfed78 (git)
Affected: d647c5b2fbf81560818dacade360abc8c00a9665 , < ff6f26c58421614b02694ac9d219ac61d924bc68 (git)
Affected: 069c3fb310e9336cf48cfdf8748a32c29fd0193d (git)
Affected: 5.10.258 , < 5.10.261 (semver)
Affected: 5.15.209 , < 5.15.212 (semver)
Affected: 6.1.175 , < 6.1.178 (semver)
Affected: 6.6.140 , < 6.6.145 (semver)
Affected: 6.12.86 , < 6.12.97 (semver)
Affected: 6.18.27 , < 6.18.40 (semver)
Affected: 7.0.4 , < 7.1 (semver)
Create a notification for this product.
Linux Linux Affected: 7.1
Unaffected: 0 , < 7.1 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ocfs2/aops.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f0ae0a6ca87dc2d4a789f71cdedb808ba6c16990",
              "status": "affected",
              "version": "97c03c0e9f73a5049794b3c69ee60fb5e8b0ebd8",
              "versionType": "git"
            },
            {
              "lessThan": "137e8b4823a9a11928428d4ec0a0cacb2f50a769",
              "status": "affected",
              "version": "1e99bb19994246514d63e656492904176f9d5edd",
              "versionType": "git"
            },
            {
              "lessThan": "4273548e418bd935430d35e9d052870f323441f3",
              "status": "affected",
              "version": "91e05ac2336d00d5b99fc774be4bd50039084796",
              "versionType": "git"
            },
            {
              "lessThan": "49b34bd3ad69611af03590a23abf2cda9ac1073d",
              "status": "affected",
              "version": "886f97fa59d0bbfa9859fb1a66dd9e014b522d89",
              "versionType": "git"
            },
            {
              "lessThan": "ff187c502b39389b0d732cb7050a3db8e5ebfcd6",
              "status": "affected",
              "version": "ea5bb1d20da756e4f41a48dad42b2e7d6e73f71e",
              "versionType": "git"
            },
            {
              "lessThan": "ae1f3460833d3e427420ab260278ec0e45d68c86",
              "status": "affected",
              "version": "3c636a3edca9c3f180b3079f94fe7e115730d9c6",
              "versionType": "git"
            },
            {
              "lessThan": "f3dd1e534e9de64669415f8239e0094afecfed78",
              "status": "affected",
              "version": "d647c5b2fbf81560818dacade360abc8c00a9665",
              "versionType": "git"
            },
            {
              "lessThan": "ff6f26c58421614b02694ac9d219ac61d924bc68",
              "status": "affected",
              "version": "d647c5b2fbf81560818dacade360abc8c00a9665",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "069c3fb310e9336cf48cfdf8748a32c29fd0193d",
              "versionType": "git"
            },
            {
              "lessThan": "5.10.261",
              "status": "affected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.212",
              "status": "affected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.178",
              "status": "affected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.145",
              "status": "affected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.97",
              "status": "affected",
              "version": "6.12.86",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.40",
              "status": "affected",
              "version": "6.18.27",
              "versionType": "semver"
            },
            {
              "lessThan": "7.1",
              "status": "affected",
              "version": "7.0.4",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ocfs2/aops.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "lessThan": "7.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.261",
                  "versionStartIncluding": "5.10.258",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.212",
                  "versionStartIncluding": "5.15.209",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.178",
                  "versionStartIncluding": "6.1.175",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.145",
                  "versionStartIncluding": "6.6.140",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.97",
                  "versionStartIncluding": "6.12.86",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.18.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "7.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "7.0.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix circular locking dependency in ocfs2_dio_end_io_write\n\nA circular locking dependency involves INODE_ALLOC_SYSTEM_INODE,\nEXTENT_ALLOC_SYSTEM_INODE, and ORPHAN_DIR_SYSTEM_INODE.\n\n1. ocfs2_mknod() acquires INODE_ALLOC then EXTENT_ALLOC.\n\n2. ocfs2_dio_end_io_write() acquires EXTENT_ALLOC for unwritten\n   extents, then ORPHAN_DIR via ocfs2_del_inode_from_orphan() while still\n   holding EXTENT_ALLOC.\n\n3. ocfs2_wipe_inode() acquires ORPHAN_DIR then INODE_ALLOC via\n   ocfs2_remove_inode.\n\nBreak the cycle in ocfs2_dio_end_io_write() by freeing the allocation\ncontexts (releasing EXTENT_ALLOC) before acquiring ORPHAN_DIR.\n\nWARNING: possible circular locking dependency detected\n------------------------------------------------------\nis trying to acquire lock:\nffff8881e78b33a0\n(\u0026ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at:\nocfs2_evict_inode+0x1539/0x43b0 fs/ocfs2/inode.c:1299\n\nbut task is already holding lock:\nffff8881e78b4fa0\n(\u0026ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at:\nocfs2_evict_inode+0xe97/0x43b0 fs/ocfs2/inode.c:1299\n\nthe existing dependency chain (in reverse order) is:\n\n-\u003e #2 (\u0026ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}:\n       inode_lock include/linux/fs.h:1029 [inline]\n       ocfs2_del_inode_from_orphan+0x12e/0x7a0 fs/ocfs2/namei.c:2728\n       ocfs2_dio_end_io+0xf9c/0x1370 fs/ocfs2/aops.c:2418\n       dio_complete+0x25b/0x790 fs/direct-io.c:281\n\n-\u003e #1 (\u0026ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:\n       inode_lock include/linux/fs.h:1029 [inline]\n       ocfs2_reserve_suballoc_bits+0x16d/0x4840 fs/ocfs2/suballoc.c:882\n       ocfs2_reserve_new_metadata_blocks+0x415/0x9a0\n       fs/ocfs2/suballoc.c:1078\n       ocfs2_mknod+0x10f3/0x2260 fs/ocfs2/namei.c:351\n\n-\u003e #0 (\u0026ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:\n       __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237\n       lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868\n       down_write+0x96/0x200 kernel/locking/rwsem.c:1625\n       inode_lock include/linux/fs.h:1029 [inline]\n       ocfs2_remove_inode fs/ocfs2/inode.c:733 [inline]\n       ocfs2_wipe_inode fs/ocfs2/inode.c:896 [inline]\n       ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline]\n       ocfs2_evict_inode+0x1539/0x43b0 fs/ocfs2/inode.c:1299\n\nChain exists of:\n  \u0026ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] --\u003e\n  \u0026ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE] --\u003e\n  \u0026ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]\n\n Possible unsafe locking scenario:\n\n       CPU0                    CPU1\n       ----                    ----\n  lock(\u0026ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);\n                               lock(\u0026ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]);\n                               lock(\u0026ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);\n  lock(\u0026ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]);\n\n *** DEADLOCK ***"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-04T16:49:02.905Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f0ae0a6ca87dc2d4a789f71cdedb808ba6c16990"
        },
        {
          "url": "https://git.kernel.org/stable/c/137e8b4823a9a11928428d4ec0a0cacb2f50a769"
        },
        {
          "url": "https://git.kernel.org/stable/c/4273548e418bd935430d35e9d052870f323441f3"
        },
        {
          "url": "https://git.kernel.org/stable/c/49b34bd3ad69611af03590a23abf2cda9ac1073d"
        },
        {
          "url": "https://git.kernel.org/stable/c/ff187c502b39389b0d732cb7050a3db8e5ebfcd6"
        },
        {
          "url": "https://git.kernel.org/stable/c/ae1f3460833d3e427420ab260278ec0e45d68c86"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3dd1e534e9de64669415f8239e0094afecfed78"
        },
        {
          "url": "https://git.kernel.org/stable/c/ff6f26c58421614b02694ac9d219ac61d924bc68"
        }
      ],
      "title": "ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80879",
    "datePublished": "2026-09-04T16:49:02.905Z",
    "dateReserved": "2026-08-26T14:34:25.799Z",
    "dateUpdated": "2026-09-04T16:49:02.905Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-80879",
      "date": "2026-10-04",
      "epss": "0.0022",
      "percentile": "0.11314"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "fs/ocfs2/aops.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "f0ae0a6ca87dc2d4a789f71cdedb808ba6c16990",
                    "status": "affected",
                    "version": "97c03c0e9f73a5049794b3c69ee60fb5e8b0ebd8",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "137e8b4823a9a11928428d4ec0a0cacb2f50a769",
                    "status": "affected",
                    "version": "1e99bb19994246514d63e656492904176f9d5edd",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "4273548e418bd935430d35e9d052870f323441f3",
                    "status": "affected",
                    "version": "91e05ac2336d00d5b99fc774be4bd50039084796",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "49b34bd3ad69611af03590a23abf2cda9ac1073d",
                    "status": "affected",
                    "version": "886f97fa59d0bbfa9859fb1a66dd9e014b522d89",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ff187c502b39389b0d732cb7050a3db8e5ebfcd6",
                    "status": "affected",
                    "version": "ea5bb1d20da756e4f41a48dad42b2e7d6e73f71e",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ae1f3460833d3e427420ab260278ec0e45d68c86",
                    "status": "affected",
                    "version": "3c636a3edca9c3f180b3079f94fe7e115730d9c6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "f3dd1e534e9de64669415f8239e0094afecfed78",
                    "status": "affected",
                    "version": "d647c5b2fbf81560818dacade360abc8c00a9665",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ff6f26c58421614b02694ac9d219ac61d924bc68",
                    "status": "affected",
                    "version": "d647c5b2fbf81560818dacade360abc8c00a9665",
                    "versionType": "git"
                  },
                  {
                    "status": "affected",
                    "version": "069c3fb310e9336cf48cfdf8748a32c29fd0193d",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "5.10.261",
                    "status": "affected",
                    "version": "5.10.258",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "5.15.212",
                    "status": "affected",
                    "version": "5.15.209",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "6.1.178",
                    "status": "affected",
                    "version": "6.1.175",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "6.6.145",
                    "status": "affected",
                    "version": "6.6.140",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "6.12.97",
                    "status": "affected",
                    "version": "6.12.86",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "6.18.40",
                    "status": "affected",
                    "version": "6.18.27",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "7.1",
                    "status": "affected",
                    "version": "7.0.4",
                    "versionType": "semver"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "fs/ocfs2/aops.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "7.1"
                  },
                  {
                    "lessThan": "7.1",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.261",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.212",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.178",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.145",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.97",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.40",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.1.*",
                    "status": "unaffected",
                    "version": "7.1.5",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.2",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix circular locking dependency in ocfs2_dio_end_io_write\n\nA circular locking dependency involves INODE_ALLOC_SYSTEM_INODE,\nEXTENT_ALLOC_SYSTEM_INODE, and ORPHAN_DIR_SYSTEM_INODE.\n\n1. ocfs2_mknod() acquires INODE_ALLOC then EXTENT_ALLOC.\n\n2. ocfs2_dio_end_io_write() acquires EXTENT_ALLOC for unwritten\n   extents, then ORPHAN_DIR via ocfs2_del_inode_from_orphan() while still\n   holding EXTENT_ALLOC.\n\n3. ocfs2_wipe_inode() acquires ORPHAN_DIR then INODE_ALLOC via\n   ocfs2_remove_inode.\n\nBreak the cycle in ocfs2_dio_end_io_write() by freeing the allocation\ncontexts (releasing EXTENT_ALLOC) before acquiring ORPHAN_DIR.\n\nWARNING: possible circular locking dependency detected\n------------------------------------------------------\nis trying to acquire lock:\nffff8881e78b33a0\n(\u0026ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at:\nocfs2_evict_inode+0x1539/0x43b0 fs/ocfs2/inode.c:1299\n\nbut task is already holding lock:\nffff8881e78b4fa0\n(\u0026ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at:\nocfs2_evict_inode+0xe97/0x43b0 fs/ocfs2/inode.c:1299\n\nthe existing dependency chain (in reverse order) is:\n\n-\u003e #2 (\u0026ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}:\n       inode_lock include/linux/fs.h:1029 [inline]\n       ocfs2_del_inode_from_orphan+0x12e/0x7a0 fs/ocfs2/namei.c:2728\n       ocfs2_dio_end_io+0xf9c/0x1370 fs/ocfs2/aops.c:2418\n       dio_complete+0x25b/0x790 fs/direct-io.c:281\n\n-\u003e #1 (\u0026ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:\n       inode_lock include/linux/fs.h:1029 [inline]\n       ocfs2_reserve_suballoc_bits+0x16d/0x4840 fs/ocfs2/suballoc.c:882\n       ocfs2_reserve_new_metadata_blocks+0x415/0x9a0\n       fs/ocfs2/suballoc.c:1078\n       ocfs2_mknod+0x10f3/0x2260 fs/ocfs2/namei.c:351\n\n-\u003e #0 (\u0026ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:\n       __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237\n       lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868\n       down_write+0x96/0x200 kernel/locking/rwsem.c:1625\n       inode_lock include/linux/fs.h:1029 [inline]\n       ocfs2_remove_inode fs/ocfs2/inode.c:733 [inline]\n       ocfs2_wipe_inode fs/ocfs2/inode.c:896 [inline]\n       ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline]\n       ocfs2_evict_inode+0x1539/0x43b0 fs/ocfs2/inode.c:1299\n\nChain exists of:\n  \u0026ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] --\u003e\n  \u0026ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE] --\u003e\n  \u0026ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]\n\n Possible unsafe locking scenario:\n\n       CPU0                    CPU1\n       ----                    ----\n  lock(\u0026ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);\n                               lock(\u0026ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]);\n                               lock(\u0026ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);\n  lock(\u0026ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]);\n\n *** DEADLOCK ***"
          }
        ],
        "id": "CVE-2026-80879",
        "lastModified": "2026-09-04T17:17:00.080",
        "metrics": {},
        "published": "2026-09-04T17:17:00.080",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/137e8b4823a9a11928428d4ec0a0cacb2f50a769"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/4273548e418bd935430d35e9d052870f323441f3"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/49b34bd3ad69611af03590a23abf2cda9ac1073d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ae1f3460833d3e427420ab260278ec0e45d68c86"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f0ae0a6ca87dc2d4a789f71cdedb808ba6c16990"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f3dd1e534e9de64669415f8239e0094afecfed78"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ff187c502b39389b0d732cb7050a3db8e5ebfcd6"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ff6f26c58421614b02694ac9d219ac61d924bc68"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-15T01:06:50Z",
      "cve": "CVE-2026-80879",
      "id": "CVE-2026-80879",
      "initial_release_date": "2026-09-05T00:25:26Z",
      "product_status:known_affected": "264",
      "product_status:known_not_affected": "89",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80879",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80879.json",
      "version": "7"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.