CWE-416
AllowedUse After Free
Abstraction: Variant · Status: Stable
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
11157 vulnerabilities reference this CWE, most recent first.
GHSA-C73P-5PPH-JVJ5
Vulnerability from github – Published: 2026-01-06 03:31 – Updated: 2026-01-06 21:30In c2ps, there is a possible memory corruption due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10274607; Issue ID: MSV-5049.
{
"affected": [],
"aliases": [
"CVE-2025-20799"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-06T02:15:43Z",
"severity": "HIGH"
},
"details": "In c2ps, there is a possible memory corruption due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10274607; Issue ID: MSV-5049.",
"id": "GHSA-c73p-5pph-jvj5",
"modified": "2026-01-06T21:30:33Z",
"published": "2026-01-06T03:31:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-20799"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/January-2026"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C74H-PG38-74XM
Vulnerability from github – Published: 2024-05-03 03:31 – Updated: 2024-05-03 03:31Foxit PDF Reader Signature Use-After-Free Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the handling of Signature objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-22122.
{
"affected": [],
"aliases": [
"CVE-2023-51554"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-03T03:16:13Z",
"severity": "LOW"
},
"details": "Foxit PDF Reader Signature Use-After-Free Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the handling of Signature objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-22122.",
"id": "GHSA-c74h-pg38-74xm",
"modified": "2024-05-03T03:31:07Z",
"published": "2024-05-03T03:31:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-51554"
},
{
"type": "WEB",
"url": "https://www.foxit.com/support/security-bulletins.html"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1866"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-C75M-MXJW-CWC6
Vulnerability from github – Published: 2022-05-14 01:16 – Updated: 2022-05-14 01:16Multiple use-after-free vulnerabilities in the (1) htmlPArsePubidLiteral and (2) htmlParseSystemiteral functions in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allow remote attackers to cause a denial of service via a crafted XML document.
{
"affected": [],
"aliases": [
"CVE-2016-1837"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-05-20T10:59:00Z",
"severity": "MODERATE"
},
"details": "Multiple use-after-free vulnerabilities in the (1) htmlPArsePubidLiteral and (2) htmlParseSystemiteral functions in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allow remote attackers to cause a denial of service via a crafted XML document.",
"id": "GHSA-c75m-mxjw-cwc6",
"modified": "2022-05-14T01:16:29Z",
"published": "2022-05-14T01:16:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-1837"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2016:1292"
},
{
"type": "WEB",
"url": "https://bugzilla.gnome.org/show_bug.cgi?id=760263"
},
{
"type": "WEB",
"url": "https://git.gnome.org/browse/libxml2/commit/?id=11ed4a7a90d5ce156a18980a4ad4e53e77384852"
},
{
"type": "WEB",
"url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10170"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT206564"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT206566"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT206567"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT206568"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2016/dsa-3593"
},
{
"type": "WEB",
"url": "https://www.tenable.com/security/tns-2016-18"
},
{
"type": "WEB",
"url": "http://lists.apple.com/archives/security-announce/2016/May/msg00001.html"
},
{
"type": "WEB",
"url": "http://lists.apple.com/archives/security-announce/2016/May/msg00002.html"
},
{
"type": "WEB",
"url": "http://lists.apple.com/archives/security-announce/2016/May/msg00003.html"
},
{
"type": "WEB",
"url": "http://lists.apple.com/archives/security-announce/2016/May/msg00004.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2016-2957.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/90691"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1035890"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-2994-1"
},
{
"type": "WEB",
"url": "http://xmlsoft.org/news.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C776-FF7G-WCXJ
Vulnerability from github – Published: 2024-04-03 18:30 – Updated: 2024-04-03 18:30Foxit PDF Reader AcroForm Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the handling of Doc objects in AcroForms. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-22633.
{
"affected": [],
"aliases": [
"CVE-2024-30328"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-03T17:15:57Z",
"severity": "HIGH"
},
"details": "Foxit PDF Reader AcroForm Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the handling of Doc objects in AcroForms. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-22633.",
"id": "GHSA-c776-ff7g-wcxj",
"modified": "2024-04-03T18:30:43Z",
"published": "2024-04-03T18:30:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-30328"
},
{
"type": "WEB",
"url": "https://www.foxit.com/support/security-bulletins.html"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-312"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C77H-2F4C-X8Q8
Vulnerability from github – Published: 2022-05-13 01:06 – Updated: 2022-05-13 01:06Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.16 and 11.x before 11.0.13, Acrobat and Acrobat Reader DC Classic before 2015.006.30094, and Acrobat and Acrobat Reader DC Continuous before 2015.009.20069 on Windows and OS X allows attackers to execute arbitrary code via a crafted Optional Content Groups (OCG) object in a WillSave document action, a different vulnerability than CVE-2015-5586, CVE-2015-6683, CVE-2015-6684, CVE-2015-6687, CVE-2015-6689, CVE-2015-6690, CVE-2015-6691, CVE-2015-7615, CVE-2015-7617, and CVE-2015-7621.
{
"affected": [],
"aliases": [
"CVE-2015-6688"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2015-10-14T23:59:00Z",
"severity": "MODERATE"
},
"details": "Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.16 and 11.x before 11.0.13, Acrobat and Acrobat Reader DC Classic before 2015.006.30094, and Acrobat and Acrobat Reader DC Continuous before 2015.009.20069 on Windows and OS X allows attackers to execute arbitrary code via a crafted Optional Content Groups (OCG) object in a WillSave document action, a different vulnerability than CVE-2015-5586, CVE-2015-6683, CVE-2015-6684, CVE-2015-6687, CVE-2015-6689, CVE-2015-6690, CVE-2015-6691, CVE-2015-7615, CVE-2015-7617, and CVE-2015-7621.",
"id": "GHSA-c77h-2f4c-x8q8",
"modified": "2022-05-13T01:06:42Z",
"published": "2022-05-13T01:06:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-6688"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb15-24.html"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1033796"
},
{
"type": "WEB",
"url": "http://www.zerodayinitiative.com/advisories/ZDI-15-469"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-C77M-WH63-VHCH
Vulnerability from github – Published: 2024-07-23 09:30 – Updated: 2025-11-04 00:30In the Linux kernel, the following vulnerability has been resolved:
filelock: Remove locks reliably when fcntl/close race is detected
When fcntl_setlk() races with close(), it removes the created lock with do_lock_file_wait(). However, LSMs can allow the first do_lock_file_wait() that created the lock while denying the second do_lock_file_wait() that tries to remove the lock. Separately, posix_lock_file() could also fail to remove a lock due to GFP_KERNEL allocation failure (when splitting a range in the middle).
After the bug has been triggered, use-after-free reads will occur in lock_get_status() when userspace reads /proc/locks. This can likely be used to read arbitrary kernel memory, but can't corrupt kernel memory.
Fix it by calling locks_remove_posix() instead, which is designed to reliably get rid of POSIX locks associated with the given file and files_struct and is also used by filp_flush().
{
"affected": [],
"aliases": [
"CVE-2024-41012"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-23T08:15:01Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfilelock: Remove locks reliably when fcntl/close race is detected\n\nWhen fcntl_setlk() races with close(), it removes the created lock with\ndo_lock_file_wait().\nHowever, LSMs can allow the first do_lock_file_wait() that created the lock\nwhile denying the second do_lock_file_wait() that tries to remove the lock.\nSeparately, posix_lock_file() could also fail to\nremove a lock due to GFP_KERNEL allocation failure (when splitting a range\nin the middle).\n\nAfter the bug has been triggered, use-after-free reads will occur in\nlock_get_status() when userspace reads /proc/locks. This can likely be used\nto read arbitrary kernel memory, but can\u0027t corrupt kernel memory.\n\nFix it by calling locks_remove_posix() instead, which is designed to\nreliably get rid of POSIX locks associated with the given file and\nfiles_struct and is also used by filp_flush().",
"id": "GHSA-c77m-wh63-vhch",
"modified": "2025-11-04T00:30:58Z",
"published": "2024-07-23T09:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-41012"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3cad1bc010416c6dd780643476bc59ed742436b9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/52c87ab18c76c14d7209646ccb3283b3f5d87b22"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5661b9c7ec189406c2dde00837aaa4672efb6240"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5f5d0799eb0a01d550c21b7894e26b2d9db55763"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b6d223942c34057fdfd8f149e763fa823731b224"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d30ff33040834c3b9eee29740acd92f9c7ba2250"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dc2ce1dfceaa0767211a9d963ddb029ab21c4235"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ef8fc41cd6f95f9a4a3470f085aecf350569a0b3"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C7C9-9R78-V3MH
Vulnerability from github – Published: 2026-09-07 03:30 – Updated: 2026-09-07 12:30In geniezone, there is a possible escalation of privilege due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10900510; Issue ID: MSV-6781.
{
"affected": [],
"aliases": [
"CVE-2026-20517"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-07T02:17:20Z",
"severity": "MODERATE"
},
"details": "In geniezone, there is a possible escalation of privilege due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10900510; Issue ID: MSV-6781.",
"id": "GHSA-c7c9-9r78-v3mh",
"modified": "2026-09-07T12:30:28Z",
"published": "2026-09-07T03:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20517"
},
{
"type": "WEB",
"url": "https://www.mediatek.com/product-security-bulletin/September-2026"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C7CR-CH33-3XR3
Vulnerability from github – Published: 2025-09-22 21:30 – Updated: 2026-06-19 15:33In the Linux kernel, the following vulnerability has been resolved:
wifi: brcmfmac: fix use-after-free when rescheduling brcmf_btcoex_info work
The brcmf_btcoex_detach() only shuts down the btcoex timer, if the flag timer_on is false. However, the brcmf_btcoex_timerfunc(), which runs as timer handler, sets timer_on to false. This creates critical race conditions:
1.If brcmf_btcoex_detach() is called while brcmf_btcoex_timerfunc() is executing, it may observe timer_on as false and skip the call to timer_shutdown_sync().
2.The brcmf_btcoex_timerfunc() may then reschedule the brcmf_btcoex_info worker after the cancel_work_sync() has been executed, resulting in use-after-free bugs.
The use-after-free bugs occur in two distinct scenarios, depending on the timing of when the brcmf_btcoex_info struct is freed relative to the execution of its worker thread.
Scenario 1: Freed before the worker is scheduled
The brcmf_btcoex_info is deallocated before the worker is scheduled. A race condition can occur when schedule_work(&bt_local->work) is called after the target memory has been freed. The sequence of events is detailed below:
CPU0 | CPU1 brcmf_btcoex_detach | brcmf_btcoex_timerfunc | bt_local->timer_on = false; if (cfg->btcoex->timer_on) | ... | cancel_work_sync(); | ... | kfree(cfg->btcoex); // FREE | | schedule_work(&bt_local->work); // USE
Scenario 2: Freed after the worker is scheduled
The brcmf_btcoex_info is freed after the worker has been scheduled but before or during its execution. In this case, statements within the brcmf_btcoex_handler() — such as the container_of macro and subsequent dereferences of the brcmf_btcoex_info object will cause a use-after-free access. The following timeline illustrates this scenario:
CPU0 | CPU1 brcmf_btcoex_detach | brcmf_btcoex_timerfunc | bt_local->timer_on = false; if (cfg->btcoex->timer_on) | ... | cancel_work_sync(); | ... | schedule_work(); // Reschedule | kfree(cfg->btcoex); // FREE | brcmf_btcoex_handler() // Worker / | btci = container_of(....); // USE The kfree() above could | ... also occur at any point | btci-> // USE during the worker's execution| / |
To resolve the race conditions, drop the conditional check and call timer_shutdown_sync() directly. It can deactivate the timer reliably, regardless of its current state. Once stopped, the timer_on state is then set to false.
{
"affected": [],
"aliases": [
"CVE-2025-39863"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-19T16:15:45Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: fix use-after-free when rescheduling brcmf_btcoex_info work\n\nThe brcmf_btcoex_detach() only shuts down the btcoex timer, if the\nflag timer_on is false. However, the brcmf_btcoex_timerfunc(), which\nruns as timer handler, sets timer_on to false. This creates critical\nrace conditions:\n\n1.If brcmf_btcoex_detach() is called while brcmf_btcoex_timerfunc()\nis executing, it may observe timer_on as false and skip the call to\ntimer_shutdown_sync().\n\n2.The brcmf_btcoex_timerfunc() may then reschedule the brcmf_btcoex_info\nworker after the cancel_work_sync() has been executed, resulting in\nuse-after-free bugs.\n\nThe use-after-free bugs occur in two distinct scenarios, depending on\nthe timing of when the brcmf_btcoex_info struct is freed relative to\nthe execution of its worker thread.\n\nScenario 1: Freed before the worker is scheduled\n\nThe brcmf_btcoex_info is deallocated before the worker is scheduled.\nA race condition can occur when schedule_work(\u0026bt_local-\u003ework) is\ncalled after the target memory has been freed. The sequence of events\nis detailed below:\n\nCPU0 | CPU1\nbrcmf_btcoex_detach | brcmf_btcoex_timerfunc\n | bt_local-\u003etimer_on = false;\n if (cfg-\u003ebtcoex-\u003etimer_on) |\n ... |\n cancel_work_sync(); |\n ... |\n kfree(cfg-\u003ebtcoex); // FREE |\n | schedule_work(\u0026bt_local-\u003ework); // USE\n\nScenario 2: Freed after the worker is scheduled\n\nThe brcmf_btcoex_info is freed after the worker has been scheduled\nbut before or during its execution. In this case, statements within\nthe brcmf_btcoex_handler() \u2014 such as the container_of macro and\nsubsequent dereferences of the brcmf_btcoex_info object will cause\na use-after-free access. The following timeline illustrates this\nscenario:\n\nCPU0 | CPU1\nbrcmf_btcoex_detach | brcmf_btcoex_timerfunc\n | bt_local-\u003etimer_on = false;\n if (cfg-\u003ebtcoex-\u003etimer_on) |\n ... |\n cancel_work_sync(); |\n ... | schedule_work(); // Reschedule\n |\n kfree(cfg-\u003ebtcoex); // FREE | brcmf_btcoex_handler() // Worker\n /* | btci = container_of(....); // USE\n The kfree() above could | ...\n also occur at any point | btci-\u003e // USE\n during the worker\u0027s execution|\n */ |\n\nTo resolve the race conditions, drop the conditional check and call\ntimer_shutdown_sync() directly. It can deactivate the timer reliably,\nregardless of its current state. Once stopped, the timer_on state is\nthen set to false.",
"id": "GHSA-c7cr-ch33-3xr3",
"modified": "2026-06-19T15:33:07Z",
"published": "2025-09-22T21:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39863"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2f6fbc8e04ca1d1d5c560be694199f847229c625"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3e789f8475f6c857c88de5c5bf4b24b11a477dd7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9cb83d4be0b9b697eae93d321e0da999f9cdfcfc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ae58f70bde0433f27ef4b388ab50634736607bf6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c75600e69e66a751cc046cd9c407b942f298d852"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f1150153c4e5940fe49ab51136343c5b4fe49d63"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C7GF-37RM-RPG6
Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-09-04 15:35In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix use-after-free in iomap inline data write path
The inline data buffer head (dibh) is being released prematurely in gfs2_iomap_begin() via release_metapath() while iomap->inline_data still points to dibh->b_data. This causes a use-after-free when iomap_write_end_inline() later attempts to write to the inline data area.
The bug sequence: 1. gfs2_iomap_begin() calls gfs2_meta_inode_buffer() to read inode metadata into dibh 2. Sets iomap->inline_data = dibh->b_data + sizeof(struct gfs2_dinode) 3. Calls release_metapath() which calls brelse(dibh), dropping refcount to 0 4. kswapd reclaims the page (~39ms later in the syzbot report) 5. iomap_write_end_inline() tries to memcpy() to iomap->inline_data 6. KASAN detects use-after-free write to freed memory
Fix by storing dibh in iomap->private and incrementing its refcount with get_bh() in gfs2_iomap_begin(). The buffer is then properly released in gfs2_iomap_end() after the inline write completes, ensuring the page stays alive for the entire iomap operation.
Note: A C reproducer is not available for this issue. The fix is based on analysis of the KASAN report and code review showing the buffer head is freed before use.
[agruenba: Take buffer head reference in gfs2_iomap_begin() to avoid leaks in gfs2_iomap_get() and gfs2_iomap_alloc().]
{
"affected": [],
"aliases": [
"CVE-2026-45984"
],
"database_specific": {
"cwe_ids": [
"CWE-416",
"CWE-826"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-27T14:17:15Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: Fix use-after-free in iomap inline data write path\n\nThe inline data buffer head (dibh) is being released prematurely in\ngfs2_iomap_begin() via release_metapath() while iomap-\u003einline_data\nstill points to dibh-\u003eb_data. This causes a use-after-free when\niomap_write_end_inline() later attempts to write to the inline data\narea.\n\nThe bug sequence:\n1. gfs2_iomap_begin() calls gfs2_meta_inode_buffer() to read inode\n metadata into dibh\n2. Sets iomap-\u003einline_data = dibh-\u003eb_data + sizeof(struct gfs2_dinode)\n3. Calls release_metapath() which calls brelse(dibh), dropping refcount\n to 0\n4. kswapd reclaims the page (~39ms later in the syzbot report)\n5. iomap_write_end_inline() tries to memcpy() to iomap-\u003einline_data\n6. KASAN detects use-after-free write to freed memory\n\nFix by storing dibh in iomap-\u003eprivate and incrementing its refcount\nwith get_bh() in gfs2_iomap_begin(). The buffer is then properly\nreleased in gfs2_iomap_end() after the inline write completes,\nensuring the page stays alive for the entire iomap operation.\n\nNote: A C reproducer is not available for this issue. The fix is based\non analysis of the KASAN report and code review showing the buffer head\nis freed before use.\n\n[agruenba: Take buffer head reference in gfs2_iomap_begin() to avoid\nleaks in gfs2_iomap_get() and gfs2_iomap_alloc().]",
"id": "GHSA-c7gf-37rm-rpg6",
"modified": "2026-09-04T15:35:34Z",
"published": "2026-05-27T15:33:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45984"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45984.json"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/faddeb848305e79db89ee0479bb0e33380656321"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d87268326b277af3665237ac76a73dd9fa8e21b4"
},
{
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"url": "https://git.kernel.org/stable/c/87d4954b5c59735a99ea98cb208d47130f6dce7d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/815ddd27c0c7171a99fe802fdb19098ddef8b19d"
},
{
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"url": "https://git.kernel.org/stable/c/764c3c84b5683e608f43735c803a5f415046686c"
},
{
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"url": "https://git.kernel.org/stable/c/6d76febba07c40bcf358f63216d36ea68cf1c215"
},
{
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"url": "https://git.kernel.org/stable/c/1cae1bafdf9caa9b462b19af06b1a06902e4e142"
},
{
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"url": "https://git.kernel.org/stable/c/1403989d1b502f4a2c0d0b42ccf1c25748442eff"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481922"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-45984"
},
{
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"url": "https://access.redhat.com/errata/RHSA-2026:63189"
},
{
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"url": "https://access.redhat.com/errata/RHSA-2026:61692"
},
{
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"url": "https://access.redhat.com/errata/RHSA-2026:59149"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:59148"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:59147"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:59146"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:59145"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:59143"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:59142"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:55444"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:51604"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:51603"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:38902"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36767"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36049"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:35894"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:33743"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27789"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-C7H2-74JC-FJXF
Vulnerability from github – Published: 2026-09-15 15:32 – Updated: 2026-09-17 21:31Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, and Firefox ESR 153.3.
{
"affected": [],
"aliases": [
"CVE-2026-92005"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-15T13:16:48Z",
"severity": "MODERATE"
},
"details": "Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, and Firefox ESR 153.3.",
"id": "GHSA-c7h2-74jc-fjxf",
"modified": "2026-09-17T21:31:30Z",
"published": "2026-09-15T15:32:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-92005"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2056051"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-90"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-92"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-93"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-94"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-95"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-96"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
Mitigation
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
Strategy: Attack Surface Reduction
When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
No CAPEC attack patterns related to this CWE.