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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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-FJ8X-7XH8-225G
Vulnerability from github – Published: 2025-10-07 18:31 – Updated: 2026-02-05 15:31In the Linux kernel, the following vulnerability has been resolved:
netfilter: conntrack: Avoid nf_ct_helper_hash uses after free
If nf_conntrack_init_start() fails (for example due to a register_nf_conntrack_bpf() failure), the nf_conntrack_helper_fini() clean-up path frees the nf_ct_helper_hash map.
When built with NF_CONNTRACK=y, further netfilter modules (e.g: netfilter_conntrack_ftp) can still be loaded and call nf_conntrack_helpers_register(), independently of whether nf_conntrack initialized correctly. This accesses the nf_ct_helper_hash dangling pointer and causes a uaf, possibly leading to random memory corruption.
This patch guards nf_conntrack_helper_register() from accessing a freed or uninitialized nf_ct_helper_hash pointer and fixes possible uses-after-free when loading a conntrack module.
{
"affected": [],
"aliases": [
"CVE-2023-53619"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-07T16:15:44Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: conntrack: Avoid nf_ct_helper_hash uses after free\n\nIf nf_conntrack_init_start() fails (for example due to a\nregister_nf_conntrack_bpf() failure), the nf_conntrack_helper_fini()\nclean-up path frees the nf_ct_helper_hash map.\n\nWhen built with NF_CONNTRACK=y, further netfilter modules (e.g:\nnetfilter_conntrack_ftp) can still be loaded and call\nnf_conntrack_helpers_register(), independently of whether nf_conntrack\ninitialized correctly. This accesses the nf_ct_helper_hash dangling\npointer and causes a uaf, possibly leading to random memory corruption.\n\nThis patch guards nf_conntrack_helper_register() from accessing a freed\nor uninitialized nf_ct_helper_hash pointer and fixes possible\nuses-after-free when loading a conntrack module.",
"id": "GHSA-fj8x-7xh8-225g",
"modified": "2026-02-05T15:31:08Z",
"published": "2025-10-07T18:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53619"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/00716f25f9697d02a0d9bd622575c7c7321ba3d0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/05561f822f27b9fa88fa5504ddec34bf38833034"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4ee69c91cb8f9ca144bc0861969e5a1a3c6152a7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/61c7a5256543ae7d24cd9d21853d514c8632e1e9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6eef7a2b933885a17679eb8ed0796ddf0ee5309b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6f03ce2f1abcb9f9d0511e3659ca6eb60e39f566"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8289d422f5e484efe4a565fe18e862ecd621c175"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fce5cc7cbd4b92f979bf02c9ec5fb69aaeba92d7"
}
],
"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-FJ9M-WFGJ-34GQ
Vulnerability from github – Published: 2022-05-24 19:12 – Updated: 2022-05-24 19:12Use after free in Base internals in Google Chrome prior to 93.0.4577.63 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
{
"affected": [],
"aliases": [
"CVE-2021-30613"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-09-03T20:15:00Z",
"severity": "HIGH"
},
"details": "Use after free in Base internals in Google Chrome prior to 93.0.4577.63 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.",
"id": "GHSA-fj9m-wfgj-34gq",
"modified": "2022-05-24T19:12:59Z",
"published": "2022-05-24T19:12:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-30613"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2021/08/stable-channel-update-for-desktop_31.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1209622"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5LVY4WIWTVVYKQMROJJS365TZBKEARCF"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IPJPUSAWIJMQFBQQQYXAICLI4EKFQOH6"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QW4R2K5HVJ4R6XDZYOJCCFPIN2XHNS3L"
},
{
"type": "WEB",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30613"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-FJFJ-C994-XHG8
Vulnerability from github – Published: 2024-05-14 18:31 – Updated: 2024-05-14 18:31Windows DWM Core Library Elevation of Privilege Vulnerability
{
"affected": [],
"aliases": [
"CVE-2024-30035"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-14T17:17:07Z",
"severity": "HIGH"
},
"details": "Windows DWM Core Library Elevation of Privilege Vulnerability",
"id": "GHSA-fjfj-c994-xhg8",
"modified": "2024-05-14T18:31:04Z",
"published": "2024-05-14T18:31:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-30035"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-30035"
}
],
"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-FJG9-5VFM-H7WX
Vulnerability from github – Published: 2022-05-24 16:59 – Updated: 2022-05-24 16:59Adobe Acrobat and Reader versions , 2019.012.20040 and earlier, 2017.011.30148 and earlier, 2017.011.30148 and earlier, 2015.006.30503 and earlier, and 2015.006.30503 and earlier have an use after free vulnerability. Successful exploitation could lead to arbitrary code execution .
{
"affected": [],
"aliases": [
"CVE-2019-8212"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-10-17T21:15:00Z",
"severity": "CRITICAL"
},
"details": "Adobe Acrobat and Reader versions , 2019.012.20040 and earlier, 2017.011.30148 and earlier, 2017.011.30148 and earlier, 2015.006.30503 and earlier, and 2015.006.30503 and earlier have an use after free vulnerability. Successful exploitation could lead to arbitrary code execution .",
"id": "GHSA-fjg9-5vfm-h7wx",
"modified": "2022-05-24T16:59:25Z",
"published": "2022-05-24T16:59:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-8212"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb19-49.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-FJGW-6F88-3W3X
Vulnerability from github – Published: 2026-06-12 00:31 – Updated: 2026-06-12 03:31Use after free in Network in Google Chrome prior to 149.0.7827.115 allowed an attacker in a privileged network position to potentially exploit heap corruption via malicious network traffic. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-12012"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-11T22:16:53Z",
"severity": "HIGH"
},
"details": "Use after free in Network in Google Chrome prior to 149.0.7827.115 allowed an attacker in a privileged network position to potentially exploit heap corruption via malicious network traffic. (Chromium security severity: High)",
"id": "GHSA-fjgw-6f88-3w3x",
"modified": "2026-06-12T03:31:28Z",
"published": "2026-06-12T00:31:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12012"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01962725236.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/499182801"
}
],
"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-FJJ2-VRP3-84FV
Vulnerability from github – Published: 2026-06-08 18:31 – Updated: 2026-06-09 00:33Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted.
This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67.
{
"affected": [],
"aliases": [
"CVE-2026-48913"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-08T16:16:43Z",
"severity": "HIGH"
},
"details": "Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted.\n\nThis issue affects Apache HTTP Server: from 2.4.55 through 2.4.67.",
"id": "GHSA-fjj2-vrp3-84fv",
"modified": "2026-06-09T00:33:23Z",
"published": "2026-06-08T18:31:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48913"
},
{
"type": "WEB",
"url": "https://httpd.apache.org/security/vulnerabilities_24.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2026/06/08/15"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-FJP4-5VH7-6F5R
Vulnerability from github – Published: 2022-05-24 19:01 – Updated: 2022-05-24 19:01This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. 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 XFA forms. 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-13100.
{
"affected": [],
"aliases": [
"CVE-2021-31455"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-05-07T21:15:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. 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 XFA forms. 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-13100.",
"id": "GHSA-fjp4-5vh7-6f5r",
"modified": "2022-05-24T19:01:43Z",
"published": "2022-05-24T19:01:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31455"
},
{
"type": "WEB",
"url": "https://www.foxitsoftware.com/support/security-bulletins.php"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-544"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-FJPQ-CR7W-5V53
Vulnerability from github – Published: 2022-05-24 17:02 – Updated: 2022-10-31 19:00In the Linux kernel before 5.3.6, there is a use-after-free bug that can be caused by a malicious USB device in the drivers/net/ieee802154/atusb.c driver, aka CID-7fd25e6fc035.
{
"affected": [],
"aliases": [
"CVE-2019-19525"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-12-03T16:15:00Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel before 5.3.6, there is a use-after-free bug that can be caused by a malicious USB device in the drivers/net/ieee802154/atusb.c driver, aka CID-7fd25e6fc035.",
"id": "GHSA-fjpq-cr7w-5v53",
"modified": "2022-10-31T19:00:32Z",
"published": "2022-05-24T17:02:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-19525"
},
{
"type": "WEB",
"url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7fd25e6fc035f4b04b75bca6d7e8daa069603a76"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2019/12/03/4"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FJQ3-R85P-JV63
Vulnerability from github – Published: 2022-05-17 03:35 – Updated: 2022-05-17 03:35A use-after-free vulnerability was observed in Rp_toString function of Artifex Software, Inc. MuJS before 5c337af4b3df80cf967e4f9f6a21522de84b392a. A successful exploitation of this issue can lead to code execution or denial of service condition.
{
"affected": [],
"aliases": [
"CVE-2016-7504"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-10-29T01:59:00Z",
"severity": "CRITICAL"
},
"details": "A use-after-free vulnerability was observed in Rp_toString function of Artifex Software, Inc. MuJS before 5c337af4b3df80cf967e4f9f6a21522de84b392a. A successful exploitation of this issue can lead to code execution or denial of service condition.",
"id": "GHSA-fjq3-r85p-jv63",
"modified": "2022-05-17T03:35:08Z",
"published": "2022-05-17T03:35:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-7504"
},
{
"type": "WEB",
"url": "http://bugs.ghostscript.com/show_bug.cgi?id=697142"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/94241"
}
],
"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-FJV9-RQQ6-M4FM
Vulnerability from github – Published: 2025-03-11 18:32 – Updated: 2025-03-11 18:32Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2025-24044"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-11T17:16:26Z",
"severity": "HIGH"
},
"details": "Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-fjv9-rqq6-m4fm",
"modified": "2025-03-11T18:32:16Z",
"published": "2025-03-11T18:32:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-24044"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24044"
}
],
"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
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.