CVE-2023-54086 (GCVE-0-2023-54086)

Vulnerability from cvelistv5 – Published: 2025-12-24 13:06 – Updated: 2026-05-23 15:32
VLAI
Title
bpf: Add preempt_count_{sub,add} into btf id deny list
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Add preempt_count_{sub,add} into btf id deny list The recursion check in __bpf_prog_enter* and __bpf_prog_exit* leave preempt_count_{sub,add} unprotected. When attaching trampoline to them we get panic as follows, [ 867.843050] BUG: TASK stack guard page was hit at 0000000009d325cf (stack is 0000000046a46a15..00000000537e7b28) [ 867.843064] stack guard page: 0000 [#1] PREEMPT SMP NOPTI [ 867.843067] CPU: 8 PID: 11009 Comm: trace Kdump: loaded Not tainted 6.2.0+ #4 [ 867.843100] Call Trace: [ 867.843101] <TASK> [ 867.843104] asm_exc_int3+0x3a/0x40 [ 867.843108] RIP: 0010:preempt_count_sub+0x1/0xa0 [ 867.843135] __bpf_prog_enter_recur+0x17/0x90 [ 867.843148] bpf_trampoline_6442468108_0+0x2e/0x1000 [ 867.843154] ? preempt_count_sub+0x1/0xa0 [ 867.843157] preempt_count_sub+0x5/0xa0 [ 867.843159] ? migrate_enable+0xac/0xf0 [ 867.843164] __bpf_prog_exit_recur+0x2d/0x40 [ 867.843168] bpf_trampoline_6442468108_0+0x55/0x1000 ... [ 867.843788] preempt_count_sub+0x5/0xa0 [ 867.843793] ? migrate_enable+0xac/0xf0 [ 867.843829] __bpf_prog_exit_recur+0x2d/0x40 [ 867.843837] BUG: IRQ stack guard page was hit at 0000000099bd8228 (stack is 00000000b23e2bc4..000000006d95af35) [ 867.843841] BUG: IRQ stack guard page was hit at 000000005ae07924 (stack is 00000000ffd69623..0000000014eb594c) [ 867.843843] BUG: IRQ stack guard page was hit at 00000000028320f0 (stack is 00000000034b6438..0000000078d1bcec) [ 867.843842] bpf_trampoline_6442468108_0+0x55/0x1000 ... That is because in __bpf_prog_exit_recur, the preempt_count_{sub,add} are called after prog->active is decreased. Fixing this by adding these two functions into btf ids deny list.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 35e3815fa8102fab4dee75f3547472c66581125d , < 095018267c87b8bfbbb12eeb1c0ebf2359e1782c (git)
Affected: 35e3815fa8102fab4dee75f3547472c66581125d , < 60039bf72f81638baa28652a11a68e9b0b7b5b2d (git)
Affected: 35e3815fa8102fab4dee75f3547472c66581125d , < b9168d41b83d182f34ba927ee822edaee18d5fc8 (git)
Affected: 35e3815fa8102fab4dee75f3547472c66581125d , < c11bd046485d7bf1ca200db0e7d0bdc4bafdd395 (git)
Affected: f5e770c0c60ab8812574a2e0d163b0efa816a825 (git)
Affected: 5.12.11 , < 5.13 (semver)
Create a notification for this product.
Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.15.113 , ≤ 5.15.* (semver)
Unaffected: 6.1.30 , ≤ 6.1.* (semver)
Unaffected: 6.3.4 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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          "programFiles": [
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              "versionType": "semver"
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              "version": "6.1.30",
              "versionType": "semver"
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              "version": "6.3.4",
              "versionType": "semver"
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            {
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              "version": "6.4",
              "versionType": "original_commit_for_fix"
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                  "vulnerable": true
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Add preempt_count_{sub,add} into btf id deny list\n\nThe recursion check in __bpf_prog_enter* and __bpf_prog_exit*\nleave preempt_count_{sub,add} unprotected. When attaching trampoline to\nthem we get panic as follows,\n\n[  867.843050] BUG: TASK stack guard page was hit at 0000000009d325cf (stack is 0000000046a46a15..00000000537e7b28)\n[  867.843064] stack guard page: 0000 [#1] PREEMPT SMP NOPTI\n[  867.843067] CPU: 8 PID: 11009 Comm: trace Kdump: loaded Not tainted 6.2.0+ #4\n[  867.843100] Call Trace:\n[  867.843101]  \u003cTASK\u003e\n[  867.843104]  asm_exc_int3+0x3a/0x40\n[  867.843108] RIP: 0010:preempt_count_sub+0x1/0xa0\n[  867.843135]  __bpf_prog_enter_recur+0x17/0x90\n[  867.843148]  bpf_trampoline_6442468108_0+0x2e/0x1000\n[  867.843154]  ? preempt_count_sub+0x1/0xa0\n[  867.843157]  preempt_count_sub+0x5/0xa0\n[  867.843159]  ? migrate_enable+0xac/0xf0\n[  867.843164]  __bpf_prog_exit_recur+0x2d/0x40\n[  867.843168]  bpf_trampoline_6442468108_0+0x55/0x1000\n...\n[  867.843788]  preempt_count_sub+0x5/0xa0\n[  867.843793]  ? migrate_enable+0xac/0xf0\n[  867.843829]  __bpf_prog_exit_recur+0x2d/0x40\n[  867.843837] BUG: IRQ stack guard page was hit at 0000000099bd8228 (stack is 00000000b23e2bc4..000000006d95af35)\n[  867.843841] BUG: IRQ stack guard page was hit at 000000005ae07924 (stack is 00000000ffd69623..0000000014eb594c)\n[  867.843843] BUG: IRQ stack guard page was hit at 00000000028320f0 (stack is 00000000034b6438..0000000078d1bcec)\n[  867.843842]  bpf_trampoline_6442468108_0+0x55/0x1000\n...\n\nThat is because in __bpf_prog_exit_recur, the preempt_count_{sub,add} are\ncalled after prog-\u003eactive is decreased.\n\nFixing this by adding these two functions into btf ids deny list."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:32:32.011Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/b9168d41b83d182f34ba927ee822edaee18d5fc8"
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        {
          "url": "https://git.kernel.org/stable/c/c11bd046485d7bf1ca200db0e7d0bdc4bafdd395"
        }
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      "title": "bpf: Add preempt_count_{sub,add} into btf id deny list",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54086",
    "datePublished": "2025-12-24T13:06:16.857Z",
    "dateReserved": "2025-12-24T13:02:52.515Z",
    "dateUpdated": "2026-05-23T15:32:32.011Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-10-02",
      "epss": "0.00208",
      "percentile": "0.09893"
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    "nvd": {
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                "programFiles": [
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Add preempt_count_{sub,add} into btf id deny list\n\nThe recursion check in __bpf_prog_enter* and __bpf_prog_exit*\nleave preempt_count_{sub,add} unprotected. When attaching trampoline to\nthem we get panic as follows,\n\n[  867.843050] BUG: TASK stack guard page was hit at 0000000009d325cf (stack is 0000000046a46a15..00000000537e7b28)\n[  867.843064] stack guard page: 0000 [#1] PREEMPT SMP NOPTI\n[  867.843067] CPU: 8 PID: 11009 Comm: trace Kdump: loaded Not tainted 6.2.0+ #4\n[  867.843100] Call Trace:\n[  867.843101]  \u003cTASK\u003e\n[  867.843104]  asm_exc_int3+0x3a/0x40\n[  867.843108] RIP: 0010:preempt_count_sub+0x1/0xa0\n[  867.843135]  __bpf_prog_enter_recur+0x17/0x90\n[  867.843148]  bpf_trampoline_6442468108_0+0x2e/0x1000\n[  867.843154]  ? preempt_count_sub+0x1/0xa0\n[  867.843157]  preempt_count_sub+0x5/0xa0\n[  867.843159]  ? migrate_enable+0xac/0xf0\n[  867.843164]  __bpf_prog_exit_recur+0x2d/0x40\n[  867.843168]  bpf_trampoline_6442468108_0+0x55/0x1000\n...\n[  867.843788]  preempt_count_sub+0x5/0xa0\n[  867.843793]  ? migrate_enable+0xac/0xf0\n[  867.843829]  __bpf_prog_exit_recur+0x2d/0x40\n[  867.843837] BUG: IRQ stack guard page was hit at 0000000099bd8228 (stack is 00000000b23e2bc4..000000006d95af35)\n[  867.843841] BUG: IRQ stack guard page was hit at 000000005ae07924 (stack is 00000000ffd69623..0000000014eb594c)\n[  867.843843] BUG: IRQ stack guard page was hit at 00000000028320f0 (stack is 00000000034b6438..0000000078d1bcec)\n[  867.843842]  bpf_trampoline_6442468108_0+0x55/0x1000\n...\n\nThat is because in __bpf_prog_exit_recur, the preempt_count_{sub,add} are\ncalled after prog-\u003eactive is decreased.\n\nFixing this by adding these two functions into btf ids deny list."
          }
        ],
        "id": "CVE-2023-54086",
        "lastModified": "2026-06-17T06:46:46.620",
        "metrics": {},
        "published": "2025-12-24T13:16:10.453",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/095018267c87b8bfbbb12eeb1c0ebf2359e1782c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/60039bf72f81638baa28652a11a68e9b0b7b5b2d"
          },
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b9168d41b83d182f34ba927ee822edaee18d5fc8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c11bd046485d7bf1ca200db0e7d0bdc4bafdd395"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:33:05+00:00",
      "cve": "CVE-2023-54086",
      "id": "CVE-2023-54086",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: bpf: Add preempt_count_{sub,add} into btf id deny list",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-54086.json",
      "version": "3"
    }
  }
}



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