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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9821 vulnerabilities reference this CWE, most recent first.
GHSA-99W5-VV22-2RRF
Vulnerability from github – Published: 2026-01-13 18:31 – Updated: 2026-01-14 15:32Software installed and run as a non-privileged user may conduct improper GPU system calls to cause mismanagement of reference counting to cause a potential use after free.
Improper reference counting on an internal resource caused scenario where potential for use after free was present.
{
"affected": [],
"aliases": [
"CVE-2025-10865"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-13T18:16:04Z",
"severity": "HIGH"
},
"details": "Software installed and run as a non-privileged user may conduct improper GPU system calls to cause mismanagement of reference counting to cause a potential use after free.\n\nImproper reference counting on an internal resource caused scenario where potential for use after free was present.",
"id": "GHSA-99w5-vv22-2rrf",
"modified": "2026-01-14T15:32:59Z",
"published": "2026-01-13T18:31:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-10865"
},
{
"type": "WEB",
"url": "https://www.imaginationtech.com/gpu-driver-vulnerabilities"
}
],
"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-99WC-552W-7M28
Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-18 03:31In the Linux kernel, the following vulnerability has been resolved:
posix-cpu-timers: Cleanup CPU timers before freeing them during exec
Commit 55e8c8eb2c7b ("posix-cpu-timers: Store a reference to a pid not a task") started looking up tasks by PID when deleting a CPU timer.
When a non-leader thread calls execve, it will switch PIDs with the leader process. Then, as it calls exit_itimers, posix_cpu_timer_del cannot find the task because the timer still points out to the old PID.
That means that armed timers won't be disarmed, that is, they won't be removed from the timerqueue_list. exit_itimers will still release their memory, and when that list is later processed, it leads to a use-after-free.
Clean up the timers from the de-threaded task before freeing them. This prevents a reported use-after-free.
{
"affected": [],
"aliases": [
"CVE-2022-50095"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-18T11:15:38Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nposix-cpu-timers: Cleanup CPU timers before freeing them during exec\n\nCommit 55e8c8eb2c7b (\"posix-cpu-timers: Store a reference to a pid not a\ntask\") started looking up tasks by PID when deleting a CPU timer.\n\nWhen a non-leader thread calls execve, it will switch PIDs with the leader\nprocess. Then, as it calls exit_itimers, posix_cpu_timer_del cannot find\nthe task because the timer still points out to the old PID.\n\nThat means that armed timers won\u0027t be disarmed, that is, they won\u0027t be\nremoved from the timerqueue_list. exit_itimers will still release their\nmemory, and when that list is later processed, it leads to a\nuse-after-free.\n\nClean up the timers from the de-threaded task before freeing them. This\nprevents a reported use-after-free.",
"id": "GHSA-99wc-552w-7m28",
"modified": "2025-11-18T03:31:14Z",
"published": "2025-06-18T12:30:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50095"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/541840859ace9c2ccebc32fa9e376c7bd3def490"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9e255ed238fc67058df87b0388ad6d4b2ef3a2bd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b2fc1723eb65abb83e00d5f011de670296af0b28"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e362359ace6f87c201531872486ff295df306d13"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e8cb6e8fd9890780f1bfcf5592889e1b879e779c"
}
],
"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-99WM-68JG-PFGC
Vulnerability from github – Published: 2022-03-19 00:01 – Updated: 2022-03-24 00:00In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.
{
"affected": [],
"aliases": [
"CVE-2021-45868"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-03-18T07:15:00Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.",
"id": "GHSA-99wm-68jg-pfgc",
"modified": "2022-03-24T00:00:24Z",
"published": "2022-03-19T00:01:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45868"
},
{
"type": "WEB",
"url": "https://bugzilla.kernel.org/show_bug.cgi?id=214655"
},
{
"type": "WEB",
"url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220419-0003"
},
{
"type": "WEB",
"url": "https://www.openwall.com/lists/oss-security/2022/03/17/1"
},
{
"type": "WEB",
"url": "https://www.openwall.com/lists/oss-security/2022/03/17/2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9C27-3675-F2R6
Vulnerability from github – Published: 2025-12-11 21:31 – Updated: 2025-12-11 21:31In bigo_map of bigo_iommu.c, there is a possible information disclosure due to a use after free. This could lead to local escalation of privilege in the OS Kernel level with System execution privileges needed. User interaction is not needed for exploitation.
{
"affected": [],
"aliases": [
"CVE-2025-36922"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-11T20:15:56Z",
"severity": "MODERATE"
},
"details": "In bigo_map of bigo_iommu.c, there is a possible information disclosure due to a use after free. This could lead to local escalation of privilege in the OS Kernel level with System execution privileges needed. User interaction is not needed for exploitation.",
"id": "GHSA-9c27-3675-f2r6",
"modified": "2025-12-11T21:31:33Z",
"published": "2025-12-11T21:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-36922"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/pixel/2025-12-01"
}
],
"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-9C2C-V6C7-RJGV
Vulnerability from github – Published: 2021-12-09 00:00 – Updated: 2022-03-18 00:01A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3.
{
"affected": [],
"aliases": [
"CVE-2021-43535"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-12-08T22:15:00Z",
"severity": "HIGH"
},
"details": "A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox \u003c 93, Thunderbird \u003c 91.3, and Firefox ESR \u003c 91.3.",
"id": "GHSA-9c2c-v6c7-rjgv",
"modified": "2022-03-18T00:01:44Z",
"published": "2021-12-09T00:00:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43535"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1667102"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00030.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2021/dsa-5026"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2022/dsa-5034"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2021-43"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2021-49"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2021-50"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9C2R-7F3H-QC57
Vulnerability from github – Published: 2021-11-19 00:00 – Updated: 2021-11-21 00:00In apusys, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS05654663; Issue ID: ALPS05654663.
{
"affected": [],
"aliases": [
"CVE-2021-0670"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-11-18T15:15:00Z",
"severity": "HIGH"
},
"details": "In apusys, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS05654663; Issue ID: ALPS05654663.",
"id": "GHSA-9c2r-7f3h-qc57",
"modified": "2021-11-21T00:00:41Z",
"published": "2021-11-19T00:00:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-0670"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/November-2021"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-9C44-5659-5MGQ
Vulnerability from github – Published: 2024-10-21 21:30 – Updated: 2024-10-24 21:31In the Linux kernel, the following vulnerability has been resolved:
ravb: Fix potential use-after-free in ravb_rx_gbeth()
The skb is delivered to napi_gro_receive() which may free it, after calling this, dereferencing skb may trigger use-after-free.
{
"affected": [],
"aliases": [
"CVE-2022-48964"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-21T20:15:08Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nravb: Fix potential use-after-free in ravb_rx_gbeth()\n\nThe skb is delivered to napi_gro_receive() which may free it, after calling this,\ndereferencing skb may trigger use-after-free.",
"id": "GHSA-9c44-5659-5mgq",
"modified": "2024-10-24T21:31:02Z",
"published": "2024-10-21T21:30:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48964"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5a5a3e564de6a8db987410c5c2f4748d50ea82b8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e63c681494dcc0527c625a0a4f59bf10259f5ee0"
}
],
"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-9C5M-4MVH-2P3V
Vulnerability from github – Published: 2025-04-08 18:34 – Updated: 2025-04-08 18:34Use after free in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2025-26681"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-04-08T18:15:52Z",
"severity": "MODERATE"
},
"details": "Use after free in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-9c5m-4mvh-2p3v",
"modified": "2025-04-08T18:34:48Z",
"published": "2025-04-08T18:34:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-26681"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26681"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9C63-94GF-85H2
Vulnerability from github – Published: 2025-11-04 03:30 – Updated: 2026-06-30 03:35A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 26.1, iOS 26.1 and iPadOS 26.1, Safari 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.
{
"affected": [],
"aliases": [
"CVE-2025-43457"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-11-04T02:15:51Z",
"severity": "MODERATE"
},
"details": "A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 26.1, iOS 26.1 and iPadOS 26.1, Safari 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.",
"id": "GHSA-9c63-94gf-85h2",
"modified": "2026-06-30T03:35:22Z",
"published": "2025-11-04T03:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-43457"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125640"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125639"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125638"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125634"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/125632"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-43457.json"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448786"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2025-43457"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:9692"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22136"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19535"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:19206"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:16695"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:16056"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:14659"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:13845"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:11814"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:11329"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:10702"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-9C69-79X2-9WRC
Vulnerability from github – Published: 2022-05-14 00:53 – Updated: 2022-05-14 00:53Adobe Acrobat and Reader versions 2018.011.20038 and earlier, 2017.011.30079 and earlier, and 2015.006.30417 and earlier have a Use-after-free vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.
{
"affected": [],
"aliases": [
"CVE-2018-4988"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-09T19:29:00Z",
"severity": "CRITICAL"
},
"details": "Adobe Acrobat and Reader versions 2018.011.20038 and earlier, 2017.011.30079 and earlier, and 2015.006.30417 and earlier have a Use-after-free vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.",
"id": "GHSA-9c69-79x2-9wrc",
"modified": "2022-05-14T00:53:46Z",
"published": "2022-05-14T00:53:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-4988"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb18-09.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/104169"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1040920"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"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.