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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9987 vulnerabilities reference this CWE, most recent first.
GHSA-HJHR-HVPQ-97F6
Vulnerability from github – Published: 2025-08-22 18:31 – Updated: 2025-11-26 18:30
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
zloop: fix KASAN use-after-free of tag set
When a zoned loop device, or zloop device, is removed, KASAN enabled kernel reports "BUG KASAN use-after-free" in blk_mq_free_tag_set(). The BUG happens because zloop_ctl_remove() calls put_disk(), which invokes zloop_free_disk(). The zloop_free_disk() frees the memory allocated for the zlo pointer. However, after the memory is freed, zloop_ctl_remove() calls blk_mq_free_tag_set(&zlo->tag_set), which accesses the freed zlo. Hence the KASAN use-after-free.
zloop_ctl_remove() put_disk(zlo->disk) put_device() kobject_put() ... zloop_free_disk() kvfree(zlo) blk_mq_free_tag_set(&zlo->tag_set)
To avoid the BUG, move the call to blk_mq_free_tag_set(&zlo->tag_set) from zloop_ctl_remove() into zloop_free_disk(). This ensures that the tag_set is freed before the call to kvfree(zlo).
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-38620"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-22T16:15:35Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nzloop: fix KASAN use-after-free of tag set\n\nWhen a zoned loop device, or zloop device, is removed, KASAN enabled\nkernel reports \"BUG KASAN use-after-free\" in blk_mq_free_tag_set(). The\nBUG happens because zloop_ctl_remove() calls put_disk(), which invokes\nzloop_free_disk(). The zloop_free_disk() frees the memory allocated for\nthe zlo pointer. However, after the memory is freed, zloop_ctl_remove()\ncalls blk_mq_free_tag_set(\u0026zlo-\u003etag_set), which accesses the freed zlo.\nHence the KASAN use-after-free.\n\n zloop_ctl_remove()\n put_disk(zlo-\u003edisk)\n put_device()\n kobject_put()\n ...\n zloop_free_disk()\n kvfree(zlo)\n blk_mq_free_tag_set(\u0026zlo-\u003etag_set)\n\nTo avoid the BUG, move the call to blk_mq_free_tag_set(\u0026zlo-\u003etag_set)\nfrom zloop_ctl_remove() into zloop_free_disk(). This ensures that\nthe tag_set is freed before the call to kvfree(zlo).",
"id": "GHSA-hjhr-hvpq-97f6",
"modified": "2025-11-26T18:30:59Z",
"published": "2025-08-22T18:31:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38620"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/765761851d89c772f482494d452e266795460278"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c7c87046b41a9ef28ee7ac476c369da5b5228bc5"
}
],
"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-HJJX-MMJM-VP9R
Vulnerability from github – Published: 2025-02-04 15:31 – Updated: 2025-11-03 21:32
VLAI
Details
A race during concurrent delazification could have led to a use-after-free. This vulnerability affects Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2025-1012"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-04T14:15:32Z",
"severity": "CRITICAL"
},
"details": "A race during concurrent delazification could have led to a use-after-free. This vulnerability affects Firefox \u003c 135, Firefox ESR \u003c 115.20, Firefox ESR \u003c 128.7, Thunderbird \u003c 128.7, and Thunderbird \u003c 135.",
"id": "GHSA-hjjx-mmjm-vp9r",
"modified": "2025-11-03T21:32:33Z",
"published": "2025-02-04T15:31:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-1012"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1939710"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-07"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-08"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-09"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-10"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-11"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HJM7-V5PW-X89R
Vulnerability from github – Published: 2024-01-24 00:30 – Updated: 2025-06-20 21:31
VLAI
Details
Use after free in Web Audio in Google Chrome prior to 121.0.6167.85 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-0807"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-01-24T00:15:07Z",
"severity": "HIGH"
},
"details": "Use after free in Web Audio in Google Chrome prior to 121.0.6167.85 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-hjm7-v5pw-x89r",
"modified": "2025-06-20T21:31:51Z",
"published": "2024-01-24T00:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-0807"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2024/01/stable-channel-update-for-desktop_23.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1505080"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MMI6GXFONZV6HE3BPZO3AP6GUVQLG4JQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VXDSGAFQD4BDB4IB2O4ZUSHC3JCVQEKC"
}
],
"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-HJMX-69J9-2MM2
Vulnerability from github – Published: 2025-12-09 18:30 – Updated: 2025-12-09 18:30
VLAI
Details
Use after free in Microsoft Office Outlook allows an unauthorized attacker to execute code locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-62562"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-09T18:16:02Z",
"severity": "HIGH"
},
"details": "Use after free in Microsoft Office Outlook allows an unauthorized attacker to execute code locally.",
"id": "GHSA-hjmx-69j9-2mm2",
"modified": "2025-12-09T18:30:47Z",
"published": "2025-12-09T18:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-62562"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62562"
}
],
"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-HJP3-F5WG-2C6Q
Vulnerability from github – Published: 2025-03-11 18:32 – Updated: 2025-03-11 18:32
VLAI
Details
Acrobat Reader versions 24.001.30225, 20.005.30748, 25.001.20428 and earlier are affected by a Use After Free vulnerability that could result in 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.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-27160"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-11T18:15:33Z",
"severity": "HIGH"
},
"details": "Acrobat Reader versions 24.001.30225, 20.005.30748, 25.001.20428 and earlier are affected by a Use After Free vulnerability that could result in 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-hjp3-f5wg-2c6q",
"modified": "2025-03-11T18:32:20Z",
"published": "2025-03-11T18:32:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27160"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb25-14.html"
}
],
"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-HJQ7-XWRQ-JPWV
Vulnerability from github – Published: 2022-05-24 17:05 – Updated: 2024-03-08 03:31
VLAI
Details
FontForge 20190801 has a use-after-free in SFD_GetFontMetaData in sfd.c.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2020-5395"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-01-03T20:15:00Z",
"severity": "MODERATE"
},
"details": "FontForge 20190801 has a use-after-free in SFD_GetFontMetaData in sfd.c.",
"id": "GHSA-hjq7-xwrq-jpwv",
"modified": "2024-03-08T03:31:23Z",
"published": "2022-05-24T17:05:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-5395"
},
{
"type": "WEB",
"url": "https://github.com/fontforge/fontforge/issues/4084"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/03/msg00007.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2S75EAVF4KPCH3WFBMZADUAU7EAXA7ZQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MH6PKVQLBKIO7LQPDXB3MKI5I6AMDCN6"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2S75EAVF4KPCH3WFBMZADUAU7EAXA7ZQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MH6PKVQLBKIO7LQPDXB3MKI5I6AMDCN6"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202004-14"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00041.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-HJQJ-JHVC-9X34
Vulnerability from github – Published: 2026-05-06 21:31 – Updated: 2026-05-07 01:05
VLAI
Details
Use after free in Fullscreen in Google Chrome on Windows prior to 148.0.7778.96 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)
Severity
8.3 (High)
{
"affected": [],
"aliases": [
"CVE-2026-7917"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-06T19:16:39Z",
"severity": "HIGH"
},
"details": "Use after free in Fullscreen in Google Chrome on Windows prior to 148.0.7778.96 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-hjqj-jhvc-9x34",
"modified": "2026-05-07T01:05:50Z",
"published": "2026-05-06T21:31:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7917"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/498752242"
}
],
"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-HJWF-V2M2-363G
Vulnerability from github – Published: 2022-05-14 01:22 – Updated: 2025-11-25 18:32
VLAI
Details
A use-after-free vulnerability can occur while adjusting layout during SVG animations with text paths. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.
Severity
9.8 (Critical)
{
"affected": [],
"aliases": [
"CVE-2018-5155"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-06-11T21:29:00Z",
"severity": "CRITICAL"
},
"details": "A use-after-free vulnerability can occur while adjusting layout during SVG animations with text paths. This results in a potentially exploitable crash. This vulnerability affects Thunderbird \u003c 52.8, Thunderbird ESR \u003c 52.8, Firefox \u003c 60, and Firefox ESR \u003c 52.8.",
"id": "GHSA-hjwf-v2m2-363g",
"modified": "2025-11-25T18:32:13Z",
"published": "2022-05-14T01:22:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-5155"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2018-13"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2018-12"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2018-11"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2018/dsa-4209"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2018/dsa-4199"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3660-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3645-1"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201811-13"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201810-01"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2018/05/msg00013.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2018/05/msg00007.html"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1448774"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:1726"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:1725"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:1415"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:1414"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/104136"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1040896"
}
],
"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-HJWW-V25M-587C
Vulnerability from github – Published: 2022-05-14 00:53 – Updated: 2022-05-14 00:53
VLAI
Details
Adobe Acrobat and Reader 2018.011.20040 and earlier, 2017.011.30080 and earlier, and 2015.006.30418 and earlier versions have a Use-after-free vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2018-12796"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-20T19:29:00Z",
"severity": "HIGH"
},
"details": "Adobe Acrobat and Reader 2018.011.20040 and earlier, 2017.011.30080 and earlier, and 2015.006.30418 and earlier versions have a Use-after-free vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.",
"id": "GHSA-hjww-v25m-587c",
"modified": "2022-05-14T00:53:19Z",
"published": "2022-05-14T00:53:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-12796"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb18-21.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/104701"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1041250"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HJXQ-W2WW-JFJ3
Vulnerability from github – Published: 2024-04-16 18:31 – Updated: 2024-08-13 00:31
VLAI
Details
A use-after-free could occur during WASM execution if garbage collection ran during the creation of an array. This vulnerability affects Firefox < 125.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2024-3856"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-16T16:15:08Z",
"severity": "HIGH"
},
"details": "A use-after-free could occur during WASM execution if garbage collection ran during the creation of an array. This vulnerability affects Firefox \u003c 125.",
"id": "GHSA-hjxq-w2ww-jfj3",
"modified": "2024-08-13T00:31:42Z",
"published": "2024-04-16T18:31:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-3856"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1885829"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2024-18"
}
],
"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"
}
]
}
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.