Common Weakness Enumeration
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9811 vulnerabilities reference this CWE, most recent first.
GHSA-792H-432F-5Q3W
Vulnerability from github – Published: 2022-05-13 01:30 – Updated: 2022-05-13 01:30
VLAI
Details
LibVNC before commit 73cb96fec028a576a5a24417b57723b55854ad7b contains heap use-after-free vulnerability in server code of file transfer extension that can result remote code execution
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2018-15126"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-12-19T16:29:00Z",
"severity": "CRITICAL"
},
"details": "LibVNC before commit 73cb96fec028a576a5a24417b57723b55854ad7b contains heap use-after-free vulnerability in server code of file transfer extension that can result remote code execution",
"id": "GHSA-792h-432f-5q3w",
"modified": "2022-05-13T01:30:47Z",
"published": "2022-05-13T01:30:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-15126"
},
{
"type": "WEB",
"url": "https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-027-libvnc-heap-use-after-free"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2019/01/msg00029.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3877-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2019/dsa-4383"
}
],
"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"
}
]
}
GHSA-792Q-V8QG-WXVV
Vulnerability from github – Published: 2025-03-11 18:32 – Updated: 2025-03-11 18:32
VLAI
Details
Use after free in DNS Server allows an unauthorized attacker to execute code over a network.
Severity
8.1 (High)
{
"affected": [],
"aliases": [
"CVE-2025-24064"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-11T17:16:29Z",
"severity": "HIGH"
},
"details": "Use after free in DNS Server allows an unauthorized attacker to execute code over a network.",
"id": "GHSA-792q-v8qg-wxvv",
"modified": "2025-03-11T18:32:17Z",
"published": "2025-03-11T18:32:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-24064"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24064"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-7938-FGC9-GW6V
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32
VLAI
Details
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-50314"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:17:29Z",
"severity": "HIGH"
},
"details": "Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.",
"id": "GHSA-7938-fgc9-gw6v",
"modified": "2026-07-14T18:32:15Z",
"published": "2026-07-14T18:32:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50314"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50314"
}
],
"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"
}
]
}
GHSA-793M-WQ3J-WHVR
Vulnerability from github – Published: 2022-05-24 19:10 – Updated: 2025-10-22 00:32
VLAI
Details
Windows Event Tracing Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-26425, CVE-2021-34487.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2021-34486"
],
"database_specific": {
"cwe_ids": [
"CWE-269",
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-08-12T18:15:00Z",
"severity": "HIGH"
},
"details": "Windows Event Tracing Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-26425, CVE-2021-34487.",
"id": "GHSA-793m-wq3j-whvr",
"modified": "2025-10-22T00:32:19Z",
"published": "2022-05-24T19:10:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-34486"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34486"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-34486"
}
],
"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-793V-2P67-GW99
Vulnerability from github – Published: 2025-05-20 18:30 – Updated: 2026-02-06 18:30
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in ksmbd_session_rpc_open
A UAF issue can occur due to a race condition between ksmbd_session_rpc_open() and __session_rpc_close(). Add rpc_lock to the session to protect it.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-37926"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-20T16:15:29Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix use-after-free in ksmbd_session_rpc_open\n\nA UAF issue can occur due to a race condition between\nksmbd_session_rpc_open() and __session_rpc_close().\nAdd rpc_lock to the session to protect it.",
"id": "GHSA-793v-2p67-gw99",
"modified": "2026-02-06T18:30:26Z",
"published": "2025-05-20T18:30:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37926"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1067361a1cc6ad9cdf7acfc47f90012b72ad1502"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6323fec65fe54b365961fed260dd579191e46121"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8fb3b6c85b7e3127161623586b62abcc366caa20"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a1f46c99d9ea411f9bf30025b912d881d36fc709"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a4348710a7267705b75692dc1a000920481d1d92"
}
],
"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-794F-9Q36-972H
Vulnerability from github – Published: 2023-11-16 12:30 – Updated: 2023-11-16 12:30
VLAI
Details
Adobe Acrobat Reader versions 23.006.20360 (and earlier) and 20.005.30524 (and earlier) are affected by a Use After Free vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2023-44361"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-11-16T10:15:15Z",
"severity": "MODERATE"
},
"details": "Adobe Acrobat Reader versions 23.006.20360 (and earlier) and 20.005.30524 (and earlier) are affected by a Use After Free vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to bypass mitigations such as ASLR. Exploitation of this issue requires user interaction in that a victim must open a malicious file.",
"id": "GHSA-794f-9q36-972h",
"modified": "2023-11-16T12:30:21Z",
"published": "2023-11-16T12:30:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-44361"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb23-54.htm"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-797M-C28V-74J8
Vulnerability from github – Published: 2026-06-17 18:35 – Updated: 2026-06-17 18:35
VLAI
Details
Use after free in Digital Credentials in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Critical)
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2026-12439"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-17T13:19:59Z",
"severity": "HIGH"
},
"details": "Use after free in Digital Credentials in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Critical)",
"id": "GHSA-797m-c28v-74j8",
"modified": "2026-06-17T18:35:45Z",
"published": "2026-06-17T18:35:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12439"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/519728275"
}
],
"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-797X-VJPF-WHGJ
Vulnerability from github – Published: 2026-01-09 09:31 – Updated: 2026-01-15 21:31
VLAI
Details
Use after free in DualDAR prior to SMR Jan-2026 Release 1 allows local privileged attackers to execute arbitrary code.
Severity
6.7 (Medium)
{
"affected": [],
"aliases": [
"CVE-2026-20968"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-09T07:16:03Z",
"severity": "MODERATE"
},
"details": "Use after free in DualDAR prior to SMR Jan-2026 Release 1 allows local privileged attackers to execute arbitrary code.",
"id": "GHSA-797x-vjpf-whgj",
"modified": "2026-01-15T21:31:43Z",
"published": "2026-01-09T09:31:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20968"
},
{
"type": "WEB",
"url": "https://security.samsungmobile.com/securityUpdate.smsb?year=2026\u0026month=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"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-798F-8QGX-H85F
Vulnerability from github – Published: 2024-02-08 15:30 – Updated: 2024-02-08 15:30
VLAI
Details
A use-after-free flaw was found in the Linux kernel's Memory Management subsystem when a user wins two races at the same time with a fail in the mas_prev_slot function. This issue could allow a local user to crash the system.
Severity
5.1 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-1312"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-08T13:15:09Z",
"severity": "MODERATE"
},
"details": "A use-after-free flaw was found in the Linux kernel\u0027s Memory Management subsystem when a user wins two races at the same time with a fail in the mas_prev_slot function. This issue could allow a local user to crash the system.",
"id": "GHSA-798f-8qgx-h85f",
"modified": "2024-02-08T15:30:27Z",
"published": "2024-02-08T15:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-1312"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2024-1312"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2225569"
},
{
"type": "WEB",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/mm/memory.c?h=v6.8-rc3\u0026id=657b5146955eba331e01b9a6ae89ce2e716ba306"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-798H-HM78-Q979
Vulnerability from github – Published: 2025-02-27 03:34 – Updated: 2026-05-12 15:30
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
neighbour: use RCU protection in __neigh_notify()
__neigh_notify() can be called without RTNL or RCU protection.
Use RCU protection to avoid potential UAF.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-21763"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-27T03:15:16Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nneighbour: use RCU protection in __neigh_notify()\n\n__neigh_notify() can be called without RTNL or RCU protection.\n\nUse RCU protection to avoid potential UAF.",
"id": "GHSA-798h-hm78-q979",
"modified": "2026-05-12T15:30:48Z",
"published": "2025-02-27T03:34:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21763"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1cbb2aa90cd3fba15ad7efb5cdda28f3d1082379"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/40d8f2f2a373b6c294ffac394d2bb814b572ead1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/559307d25235e24b5424778c7332451b6c741159"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/784eb2376270e086f7db136d154b8404edacf97b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8666e9aab801328c1408a19fbf4070609dc0695a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/becbd5850c03ed33b232083dd66c6e38c0c0e569"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cdd5c2a12ddad8a77ce1838ff9f29aa587de82df"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e1aed6be381bcd7f46d4ca9d7ef0f5f3d6a1be32"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.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"
}
]
}
Mitigation
Architecture and Design
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
Implementation
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.