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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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-MQF6-RPJP-V4FC
Vulnerability from github – Published: 2022-05-24 19:12 – Updated: 2022-05-24 19:12
VLAI
Details
Acrobat Reader DC versions versions 2021.001.20155 (and earlier), 2020.001.30025 (and earlier) and 2017.011.30196 (and earlier) are affected by an 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-2021-28631"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-08-24T18:15:00Z",
"severity": "HIGH"
},
"details": "Acrobat Reader DC versions versions 2021.001.20155 (and earlier), 2020.001.30025 (and earlier) and 2017.011.30196 (and earlier) are affected by an 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-mqf6-rpjp-v4fc",
"modified": "2022-05-24T19:12:00Z",
"published": "2022-05-24T19:12:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-28631"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb21-37.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-MQFM-R5W2-P74J
Vulnerability from github – Published: 2022-05-14 02:08 – Updated: 2025-04-12 13:04
VLAI
Details
Use-after-free vulnerability in the pdf_load_xref function in pdf/pdf-xref.c in MuPDF allows remote attackers to cause a denial of service (crash) via a crafted PDF file.
Severity
5.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2016-6265"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-09-22T15:59:00Z",
"severity": "MODERATE"
},
"details": "Use-after-free vulnerability in the pdf_load_xref function in pdf/pdf-xref.c in MuPDF allows remote attackers to cause a denial of service (crash) via a crafted PDF file.",
"id": "GHSA-mqfm-r5w2-p74j",
"modified": "2025-04-12T13:04:30Z",
"published": "2022-05-14T02:08:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-6265"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201702-12"
},
{
"type": "WEB",
"url": "http://bugs.ghostscript.com/show_bug.cgi?id=696941"
},
{
"type": "WEB",
"url": "http://git.ghostscript.com/?p=mupdf.git%3Bh=fa1936405b6a84e5c9bb440912c23d532772f958"
},
{
"type": "WEB",
"url": "http://git.ghostscript.com/?p=mupdf.git;h=fa1936405b6a84e5c9bb440912c23d532772f958"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-updates/2016-08/msg00007.html"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2016/dsa-3655"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2016/07/21/7"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/92071"
}
],
"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-MQHH-V6V6-3XX3
Vulnerability from github – Published: 2025-08-12 18:31 – Updated: 2025-08-12 18:31
VLAI
Details
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
Severity
8.4 (High)
{
"affected": [],
"aliases": [
"CVE-2025-53731"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-12T18:15:42Z",
"severity": "HIGH"
},
"details": "Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.",
"id": "GHSA-mqhh-v6v6-3xx3",
"modified": "2025-08-12T18:31:32Z",
"published": "2025-08-12T18:31:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53731"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53731"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-MQMX-58XM-F4CJ
Vulnerability from github – Published: 2022-04-13 00:00 – Updated: 2022-04-19 00:01
VLAI
Details
In ion_ioctl of ion-ioctl.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-209791720References: Upstream kernel
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2021-39801"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-04-12T17:15:00Z",
"severity": "HIGH"
},
"details": "In ion_ioctl of ion-ioctl.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-209791720References: Upstream kernel",
"id": "GHSA-mqmx-58xm-f4cj",
"modified": "2022-04-19T00:01:07Z",
"published": "2022-04-13T00:00:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39801"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2022-04-01"
}
],
"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-MQQ9-XCHH-H97Q
Vulnerability from github – Published: 2022-05-24 17:44 – Updated: 2022-05-24 17:44
VLAI
Details
A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.
{
"affected": [],
"aliases": [
"CVE-2021-20231"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-03-12T19:15:00Z",
"severity": "CRITICAL"
},
"details": "A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.",
"id": "GHSA-mqq9-xchh-h97q",
"modified": "2022-05-24T17:44:28Z",
"published": "2022-05-24T17:44:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20231"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1922276"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r50661d6f0082709aad9a584431b59ec364f9974b63b07e0800230168@%3Cissues.spark.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r5d4001031e7790d8c6396c499522b4ed2aab782da87b1a14184793bb@%3Cissues.spark.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r5f88bed447742fcc5c47bf1c7be965ef450131914a6e1f85feba2779@%3Cissues.spark.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r6ac143ba6dd98bd4bf6bf010d46e56e254056459721ba18822d611f7@%3Cissues.spark.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/r9cbc69e57276413788e90a6ee16c7c034ea4258d31935b70db2bd158@%3Cissues.spark.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rcd70a4c88a47a75fd2d5f3ffb7cee8c2a18c713320bd90fdcb57495f@%3Cissues.spark.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rf5e1256d870193def4a82ad89ab95e63943a313b5ff0d81aa87e4532@%3Cissues.spark.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread.html/rfd5273d72d244178441e6904a2f2b41a3268f569e8092ea0b3b2bb20@%3Cissues.spark.apache.org%3E"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OSLAE6PP33A7VYRYMYMUVB3U6B26GZER"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210416-0005"
},
{
"type": "WEB",
"url": "https://www.gnutls.org/security-new.html#GNUTLS-SA-2021-03-10"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-MQR3-MXFG-8RW7
Vulnerability from github – Published: 2024-03-28 18:30 – Updated: 2025-11-04 21:31
VLAI
Details
A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.6.3, macOS Sonoma 14.2, macOS Monterey 12.7.2. A local attacker may be able to elevate their privileges.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-42892"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-28T16:15:07Z",
"severity": "HIGH"
},
"details": "A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.6.3, macOS Sonoma 14.2, macOS Monterey 12.7.2. A local attacker may be able to elevate their privileges.",
"id": "GHSA-mqr3-mxfg-8rw7",
"modified": "2025-11-04T21:31:23Z",
"published": "2024-03-28T18:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42892"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT214036"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT214037"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT214038"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT214036"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT214037"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT214038"
}
],
"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-MQVX-34Q7-6MC7
Vulnerability from github – Published: 2023-01-05 15:30 – Updated: 2023-01-11 21:30
VLAI
Details
GPAC MP4box 2.1-DEV-rev574-g9d5bb184b is vulnerable to heap use-after-free via filters/dmx_m2ts.c:470 in m2tsdmx_declare_pid
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2022-47093"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-05T15:15:00Z",
"severity": "HIGH"
},
"details": "GPAC MP4box 2.1-DEV-rev574-g9d5bb184b is vulnerable to heap use-after-free via filters/dmx_m2ts.c:470 in m2tsdmx_declare_pid",
"id": "GHSA-mqvx-34q7-6mc7",
"modified": "2023-01-11T21:30:42Z",
"published": "2023-01-05T15:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-47093"
},
{
"type": "WEB",
"url": "https://github.com/gpac/gpac/issues/2344"
}
],
"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-MQWF-VG2C-5CH3
Vulnerability from github – Published: 2022-05-24 17:35 – Updated: 2022-05-24 17:35
VLAI
Details
A code execution vulnerability exists in the WebSocket functionality of Webkit WebKitGTK 2.30.0. A specially crafted web page can trigger a use-after-free vulnerability which can lead to remote code execution. An attacker can get a user to visit a webpage to trigger this vulnerability.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2020-13543"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-12-03T17:15:00Z",
"severity": "HIGH"
},
"details": "A code execution vulnerability exists in the WebSocket functionality of Webkit WebKitGTK 2.30.0. A specially crafted web page can trigger a use-after-free vulnerability which can lead to remote code execution. An attacker can get a user to visit a webpage to trigger this vulnerability.",
"id": "GHSA-mqwf-vg2c-5ch3",
"modified": "2022-05-24T17:35:07Z",
"published": "2022-05-24T17:35:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-13543"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202012-10"
},
{
"type": "WEB",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2020-1155"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
}
],
"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-MQWX-R894-9HFP
Vulnerability from github – Published: 2025-05-24 03:30 – Updated: 2025-05-27 18:04
VLAI
Summary
Process Sync has a Potential Unsound Issue in SharedMutex
Details
In the process-sync crate 0.2.2 for Rust, the drop function lacks a check for whether the pthread_mutex is unlocked.
Severity
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "process-sync"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.2.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-48752"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": true,
"github_reviewed_at": "2025-05-27T18:04:16Z",
"nvd_published_at": "2025-05-24T03:15:23Z",
"severity": "LOW"
},
"details": "In the process-sync crate 0.2.2 for Rust, the drop function lacks a check for whether the pthread_mutex is unlocked.",
"id": "GHSA-mqwx-r894-9hfp",
"modified": "2025-05-27T18:04:16Z",
"published": "2025-05-24T03:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-48752"
},
{
"type": "WEB",
"url": "https://github.com/Forestryks/process-sync-rs/issues/3"
},
{
"type": "WEB",
"url": "https://crates.io/crates/process-sync"
},
{
"type": "PACKAGE",
"url": "https://github.com/Forestryks/process-sync-rs"
}
],
"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:L",
"type": "CVSS_V3"
}
],
"summary": "Process Sync has a Potential Unsound Issue in SharedMutex"
}
GHSA-MQXF-7JX4-2H8P
Vulnerability from github – Published: 2024-06-19 15:30 – Updated: 2025-11-03 21:31
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt
In rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the resp_pkts queue and then a decision is made whether to run the completer task inline or schedule it. Finally the skb is dereferenced to bump a 'hw' performance counter. This is wrong because if the completer task is already running in a separate thread it may have already processed the skb and freed it which can cause a seg fault. This has been observed infrequently in testing at high scale.
This patch fixes this by changing the order of enqueuing the packet until after the counter is accessed.
Severity
6.3 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-38544"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-19T14:15:14Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix seg fault in rxe_comp_queue_pkt\n\nIn rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the\nresp_pkts queue and then a decision is made whether to run the completer\ntask inline or schedule it. Finally the skb is dereferenced to bump a \u0027hw\u0027\nperformance counter. This is wrong because if the completer task is\nalready running in a separate thread it may have already processed the skb\nand freed it which can cause a seg fault. This has been observed\ninfrequently in testing at high scale.\n\nThis patch fixes this by changing the order of enqueuing the packet until\nafter the counter is accessed.",
"id": "GHSA-mqxf-7jx4-2h8p",
"modified": "2025-11-03T21:31:08Z",
"published": "2024-06-19T15:30:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38544"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/21b4c6d4d89030fd4657a8e7c8110fd941049794"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2b23b6097303ed0ba5f4bc036a1c07b6027af5c6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/30df4bef8b8e183333e9b6e9d4509d552c7da6eb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bbad88f111a1829f366c189aa48e7e58e57553fc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c91fb72a2ca6480d8d77262eef52dc5b178463a3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/de5a059e36657442b5637cc16df5163e435b9cb4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e0e14dd35d4242340c7346aac60c7ff8fbf87ffc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/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.