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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9874 vulnerabilities reference this CWE, most recent first.
GHSA-FVCF-HJ7V-3MJ6
Vulnerability from github – Published: 2024-09-18 09:30 – Updated: 2026-07-14 15:31In the Linux kernel, the following vulnerability has been resolved:
fscache: delete fscache_cookie_lru_timer when fscache exits to avoid UAF
The fscache_cookie_lru_timer is initialized when the fscache module is inserted, but is not deleted when the fscache module is removed. If timer_reduce() is called before removing the fscache module, the fscache_cookie_lru_timer will be added to the timer list of the current cpu. Afterwards, a use-after-free will be triggered in the softIRQ after removing the fscache module, as follows:
================================================================== BUG: unable to handle page fault for address: fffffbfff803c9e9 PF: supervisor read access in kernel mode PF: error_code(0x0000) - not-present page PGD 21ffea067 P4D 21ffea067 PUD 21ffe6067 PMD 110a7c067 PTE 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G W 6.11.0-rc3 #855 Tainted: [W]=WARN RIP: 0010:__run_timer_base.part.0+0x254/0x8a0 Call Trace: tmigr_handle_remote_up+0x627/0x810 __walk_groups.isra.0+0x47/0x140 tmigr_handle_remote+0x1fa/0x2f0 handle_softirqs+0x180/0x590 irq_exit_rcu+0x84/0xb0 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0xf/0x20 default_idle_call+0x38/0x60 do_idle+0x2b5/0x300 cpu_startup_entry+0x54/0x60 start_secondary+0x20d/0x280 common_startup_64+0x13e/0x148 Modules linked in: [last unloaded: netfs] ==================================================================
Therefore delete fscache_cookie_lru_timer when removing the fscahe module.
{
"affected": [],
"aliases": [
"CVE-2024-46786"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-18T08:15:05Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfscache: delete fscache_cookie_lru_timer when fscache exits to avoid UAF\n\nThe fscache_cookie_lru_timer is initialized when the fscache module\nis inserted, but is not deleted when the fscache module is removed.\nIf timer_reduce() is called before removing the fscache module,\nthe fscache_cookie_lru_timer will be added to the timer list of\nthe current cpu. Afterwards, a use-after-free will be triggered\nin the softIRQ after removing the fscache module, as follows:\n\n==================================================================\nBUG: unable to handle page fault for address: fffffbfff803c9e9\n PF: supervisor read access in kernel mode\n PF: error_code(0x0000) - not-present page\nPGD 21ffea067 P4D 21ffea067 PUD 21ffe6067 PMD 110a7c067 PTE 0\nOops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G W 6.11.0-rc3 #855\nTainted: [W]=WARN\nRIP: 0010:__run_timer_base.part.0+0x254/0x8a0\nCall Trace:\n \u003cIRQ\u003e\n tmigr_handle_remote_up+0x627/0x810\n __walk_groups.isra.0+0x47/0x140\n tmigr_handle_remote+0x1fa/0x2f0\n handle_softirqs+0x180/0x590\n irq_exit_rcu+0x84/0xb0\n sysvec_apic_timer_interrupt+0x6e/0x90\n \u003c/IRQ\u003e\n \u003cTASK\u003e\n asm_sysvec_apic_timer_interrupt+0x1a/0x20\nRIP: 0010:default_idle+0xf/0x20\n default_idle_call+0x38/0x60\n do_idle+0x2b5/0x300\n cpu_startup_entry+0x54/0x60\n start_secondary+0x20d/0x280\n common_startup_64+0x13e/0x148\n \u003c/TASK\u003e\nModules linked in: [last unloaded: netfs]\n==================================================================\n\nTherefore delete fscache_cookie_lru_timer when removing the fscahe module.",
"id": "GHSA-fvcf-hj7v-3mj6",
"modified": "2026-07-14T15:31:15Z",
"published": "2024-09-18T09:30:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46786"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0a11262549ac2ac6fb98c7cd40a67136817e5a52"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/72a6e22c604c95ddb3b10b5d3bb85b6ff4dbc34f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c1fc36d5470335546c45799d94d7bb2cbc09e8b7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e0d724932ad12e3528f4ce97fc0f6078d0cce4bc"
}
],
"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-FVCP-2QG3-QW94
Vulnerability from github – Published: 2026-06-24 21:30 – Updated: 2026-06-26 21:32A use-after-free in the gf_filter_pid_reconfigure_task_discard function (/filter_core/filter_pid.c) of GPAC Project/MP4Box before 26.02.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted media file.
{
"affected": [],
"aliases": [
"CVE-2025-60471"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-24T19:17:07Z",
"severity": "MODERATE"
},
"details": "A use-after-free in the gf_filter_pid_reconfigure_task_discard function (/filter_core/filter_pid.c) of GPAC Project/MP4Box before 26.02.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted media file.",
"id": "GHSA-fvcp-2qg3-qw94",
"modified": "2026-06-26T21:32:10Z",
"published": "2026-06-24T21:30:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-60471"
},
{
"type": "WEB",
"url": "https://github.com/gpac/gpac/issues/3279"
},
{
"type": "WEB",
"url": "https://github.com/gpac/gpac/commit/868c6801c226e9964cace54cfd5a759f152780b4"
},
{
"type": "WEB",
"url": "https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/31/31_gf_filter_pid_reconfigure_task_discard_filter_core_filter_pid_c_1341"
},
{
"type": "WEB",
"url": "https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/31/README.md"
},
{
"type": "WEB",
"url": "https://infosec.exchange/@sigdevel/116778301425195980"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/06/26/3"
}
],
"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-FVF7-58X3-4492
Vulnerability from github – Published: 2022-05-24 22:28 – Updated: 2022-05-24 22:28A use-after-free vulnerability exists in the way Webkit’s GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2021-21779"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-07-08T12:15:00Z",
"severity": "HIGH"
},
"details": "A use-after-free vulnerability exists in the way Webkit\u2019s GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.",
"id": "GHSA-fvf7-58x3-4492",
"modified": "2022-05-24T22:28:37Z",
"published": "2022-05-24T22:28:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21779"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KYMMBQN4PRVDLMIJT2LY2BWHLYBD57P3"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V4QORERLPDN3UNNJFJSOMHZZCU2G75Q6"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1238"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2021/dsa-4945"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2021/07/23/1"
}
],
"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-FVG3-8MQR-Q3X4
Vulnerability from github – Published: 2022-05-24 17:41 – Updated: 2022-05-24 17:41Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a Use After Free vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
{
"affected": [],
"aliases": [
"CVE-2021-21033"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-02-11T20:15:00Z",
"severity": "HIGH"
},
"details": "Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a Use After Free vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-fvg3-8mqr-q3x4",
"modified": "2022-05-24T17:41:57Z",
"published": "2022-05-24T17:41:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21033"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb21-09.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-FVGQ-FCCH-GFQC
Vulnerability from github – Published: 2022-05-14 00:52 – Updated: 2022-05-14 00:52Adobe Acrobat and Reader versions 2018.011.20063 and earlier, 2017.011.30102 and earlier, and 2015.006.30452 and earlier have an use after free vulnerability. Successful exploitation could lead to arbitrary code execution.
{
"affected": [],
"aliases": [
"CVE-2018-15924"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-10-12T18:29:00Z",
"severity": "HIGH"
},
"details": "Adobe Acrobat and Reader versions 2018.011.20063 and earlier, 2017.011.30102 and earlier, and 2015.006.30452 and earlier have an use after free vulnerability. Successful exploitation could lead to arbitrary code execution.",
"id": "GHSA-fvgq-fcch-gfqc",
"modified": "2022-05-14T00:52:56Z",
"published": "2022-05-14T00:52:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-15924"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb18-30.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/105441"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1041809"
}
],
"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-FVJ2-PQCW-M982
Vulnerability from github – Published: 2025-12-02 03:31 – Updated: 2025-12-02 15:30In display, 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: ALPS10196993; Issue ID: MSV-4797.
{
"affected": [],
"aliases": [
"CVE-2025-20773"
],
"database_specific": {
"cwe_ids": [
"CWE-415",
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-02T03:16:18Z",
"severity": "MODERATE"
},
"details": "In display, 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: ALPS10196993; Issue ID: MSV-4797.",
"id": "GHSA-fvj2-pqcw-m982",
"modified": "2025-12-02T15:30:31Z",
"published": "2025-12-02T03:31:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-20773"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/December-2025"
}
],
"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-FVJ5-5QVQ-G8WF
Vulnerability from github – Published: 2026-02-24 15:30 – Updated: 2026-06-30 03:35Use-after-free in the DOM: Core & HTML component. This vulnerability affects Firefox < 148.
{
"affected": [],
"aliases": [
"CVE-2026-2798"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-24T14:16:28Z",
"severity": "HIGH"
},
"details": "Use-after-free in the DOM: Core \u0026 HTML component. This vulnerability affects Firefox \u003c 148.",
"id": "GHSA-fvj5-5qvq-g8wf",
"modified": "2026-06-30T03:35:45Z",
"published": "2026-02-24T15:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2798"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-2798"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2014136"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2442315"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2798.json"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-13"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2026-16"
}
],
"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-FVJW-C4JH-FP27
Vulnerability from github – Published: 2023-01-26 21:30 – Updated: 2023-02-01 21:30In binder_vma_close of binder.c, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-254837884References: Upstream kernel
{
"affected": [],
"aliases": [
"CVE-2023-20928"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-26T21:18:00Z",
"severity": "HIGH"
},
"details": "In binder_vma_close of binder.c, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-254837884References: Upstream kernel",
"id": "GHSA-fvjw-c4jh-fp27",
"modified": "2023-02-01T21:30:23Z",
"published": "2023-01-26T21:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-20928"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2023-01-01"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/170855/Android-Binder-VMA-Management-Security-Issues.html"
}
],
"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-FVMQ-6RJR-5XGG
Vulnerability from github – Published: 2026-05-29 00:38 – Updated: 2026-05-29 15:30Use after free in UI in Google Chrome on Windows prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-9937"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-28T23:16:51Z",
"severity": "HIGH"
},
"details": "Use after free in UI in Google Chrome on Windows prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-fvmq-6rjr-5xgg",
"modified": "2026-05-29T15:30:31Z",
"published": "2026-05-29T00:38:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9937"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/502112506"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FVPR-Q9J2-9VQ7
Vulnerability from github – Published: 2023-03-29 21:30 – Updated: 2023-04-06 18:30This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.2.1.53537. 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. 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-17301.
{
"affected": [],
"aliases": [
"CVE-2022-37385"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-03-29T19:15:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.2.1.53537. 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. 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-17301.",
"id": "GHSA-fvpr-q9j2-9vq7",
"modified": "2023-04-06T18:30:20Z",
"published": "2023-03-29T21:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-37385"
},
{
"type": "WEB",
"url": "https://www.foxit.com/support/security-bulletins.html"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-22-1057"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.