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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
12195 vulnerabilities reference this CWE, most recent first.
GHSA-CQGV-CQ5Q-68PF
Vulnerability from github – Published: 2024-05-21 15:31 – Updated: 2024-11-05 00:31In the Linux kernel, the following vulnerability has been resolved:
net: ll_temac: Make sure to free skb when it is completely used
With the skb pointer piggy-backed on the TX BD, we have a simple and efficient way to free the skb buffer when the frame has been transmitted. But in order to avoid freeing the skb while there are still fragments from the skb in use, we need to piggy-back on the TX BD of the skb, not the first.
Without this, we are doing use-after-free on the DMA side, when the first BD of a multi TX BD packet is seen as completed in xmit_done, and the remaining BDs are still being processed.
{
"affected": [],
"aliases": [
"CVE-2021-47224"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-21T15:15:11Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ll_temac: Make sure to free skb when it is completely used\n\nWith the skb pointer piggy-backed on the TX BD, we have a simple and\nefficient way to free the skb buffer when the frame has been transmitted.\nBut in order to avoid freeing the skb while there are still fragments from\nthe skb in use, we need to piggy-back on the TX BD of the skb, not the\nfirst.\n\nWithout this, we are doing use-after-free on the DMA side, when the first\nBD of a multi TX BD packet is seen as completed in xmit_done, and the\nremaining BDs are still being processed.",
"id": "GHSA-cqgv-cq5q-68pf",
"modified": "2024-11-05T00:31:26Z",
"published": "2024-05-21T15:31:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47224"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/019ab7d044d0ebf97e1236bb8935b7809be92358"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6aa32217a9a446275440ee8724b1ecaf1838df47"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6d120ab4dc39a543c6b63361e1d0541c382900a3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e8afe05bd359ebe12a61dbdc94c06c00ea3e8d4b"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CQJ7-QGR2-H6C3
Vulnerability from github – Published: 2022-08-13 00:00 – Updated: 2022-08-16 00:00Use after free in WebUI in Google Chrome on Chrome OS prior to 104.0.5112.79 allowed a remote attacker who convinced a user to engage in specific user interactions to potentially exploit heap corruption via specific UI interactions.
{
"affected": [],
"aliases": [
"CVE-2022-2620"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-12T20:15:00Z",
"severity": "HIGH"
},
"details": "Use after free in WebUI in Google Chrome on Chrome OS prior to 104.0.5112.79 allowed a remote attacker who convinced a user to engage in specific user interactions to potentially exploit heap corruption via specific UI interactions.",
"id": "GHSA-cqj7-qgr2-h6c3",
"modified": "2022-08-16T00:00:24Z",
"published": "2022-08-13T00:00:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2620"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2022/08/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1337304"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T4NMJURTG5RO3TGD7ZMIQ6Z4ZZ3SAVYE"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202208-35"
}
],
"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-CQV3-Q8H5-83R5
Vulnerability from github – Published: 2024-12-27 15:31 – Updated: 2025-11-03 21:31In the Linux kernel, the following vulnerability has been resolved:
net: ieee802154: do not leave a dangling sk pointer in ieee802154_create()
sock_init_data() attaches the allocated sk object to the provided sock object. If ieee802154_create() fails later, the allocated sk object is freed, but the dangling pointer remains in the provided sock object, which may allow use-after-free.
Clear the sk pointer in the sock object on error.
{
"affected": [],
"aliases": [
"CVE-2024-56602"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-27T15:15:19Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ieee802154: do not leave a dangling sk pointer in ieee802154_create()\n\nsock_init_data() attaches the allocated sk object to the provided sock\nobject. If ieee802154_create() fails later, the allocated sk object is\nfreed, but the dangling pointer remains in the provided sock object, which\nmay allow use-after-free.\n\nClear the sk pointer in the sock object on error.",
"id": "GHSA-cqv3-q8h5-83r5",
"modified": "2025-11-03T21:31:54Z",
"published": "2024-12-27T15:31:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56602"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/03caa9bfb9fde97fb53d33decd7364514e6825cb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/14959fd7538b3be6d7617d9e60e404d6a8d4fd1f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1d5fe782c0ff068d80933f9cfd0fd39d5434bbc9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2b46994a6e76c8cc5556772932b9b60d03a55cd8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b4982fbf13042e3bb33e04eddfea8b1506b5ea65"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b4fcd63f6ef79c73cafae8cf4a114def5fc3d80d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e8bd6c5f5dc2234b4ea714380aedeea12a781754"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
},
{
"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:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-CQVF-M2MX-6WV8
Vulnerability from github – Published: 2022-05-13 01:33 – Updated: 2022-05-13 01:33This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.2.0.9297. 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 the createIcon method of an app object. 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-7163.
{
"affected": [],
"aliases": [
"CVE-2018-17683"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-01-24T04:29:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.2.0.9297. 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 the createIcon method of an app object. 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-7163.",
"id": "GHSA-cqvf-m2mx-6wv8",
"modified": "2022-05-13T01:33:52Z",
"published": "2022-05-13T01:33:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-17683"
},
{
"type": "WEB",
"url": "https://www.foxitsoftware.com/support/security-bulletins.php"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-18-1157"
}
],
"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-CQXW-6CXJ-6CFW
Vulnerability from github – Published: 2022-05-12 00:00 – Updated: 2022-05-12 00:00Acrobat Reader DC versions 22.001.20085 (and earlier), 20.005.3031x (and earlier) and 17.012.30205 (and earlier) are affected by a use-after-free vulnerability in the processing of annotations 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.
{
"affected": [],
"aliases": [
"CVE-2022-28237"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-05-11T18:15:00Z",
"severity": "HIGH"
},
"details": "Acrobat Reader DC versions 22.001.20085 (and earlier), 20.005.3031x (and earlier) and 17.012.30205 (and earlier) are affected by a use-after-free vulnerability in the processing of annotations 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-cqxw-6cxj-6cfw",
"modified": "2022-05-12T00:00:47Z",
"published": "2022-05-12T00:00:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-28237"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb22-16.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-CR6P-6527-344M
Vulnerability from github – Published: 2026-07-21 15:30 – Updated: 2026-09-01 21:31A flaw was found in libssh. If data packets are processed after a channel is closed, channel data callbacks can be invoked after the associated data has already been freed, leading to crashes or possible use-after-free conditions.
{
"affected": [],
"aliases": [
"CVE-2026-59850"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-21T15:16:37Z",
"severity": "MODERATE"
},
"details": "A flaw was found in libssh. If data packets are processed after a channel is closed, channel data callbacks can be invoked after the associated data has already been freed, leading to crashes or possible use-after-free conditions.",
"id": "GHSA-cr6p-6527-344m",
"modified": "2026-09-01T21:31:14Z",
"published": "2026-07-21T15:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59850"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:42922"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:55855"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:62217"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:62218"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-59850"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2498183"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-CR6Q-J4HH-GX6R
Vulnerability from github – Published: 2026-06-05 00:31 – Updated: 2026-06-05 03:31Use after free in Chrome for iOS in Google Chrome on iOS prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in specific UI gestures to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-10958"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-04T23:16:58Z",
"severity": "HIGH"
},
"details": "Use after free in Chrome for iOS in Google Chrome on iOS prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in specific UI gestures to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-cr6q-j4hh-gx6r",
"modified": "2026-06-05T03:31:32Z",
"published": "2026-06-05T00:31:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10958"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/507251069"
}
],
"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-CR7C-RHMG-VPW5
Vulnerability from github – Published: 2024-01-19 18:30 – Updated: 2024-01-25 15:31A heap-use-after-free was found in SWFTools v0.9.2, in the function input at lex.swf5.c:2620. It allows an attacker to cause denial of service.
{
"affected": [],
"aliases": [
"CVE-2024-22914"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-01-19T18:15:08Z",
"severity": "MODERATE"
},
"details": "A heap-use-after-free was found in SWFTools v0.9.2, in the function input at lex.swf5.c:2620. It allows an attacker to cause denial of service.",
"id": "GHSA-cr7c-rhmg-vpw5",
"modified": "2024-01-25T15:31:52Z",
"published": "2024-01-19T18:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-22914"
},
{
"type": "WEB",
"url": "https://github.com/matthiaskramm/swftools/issues/214"
}
],
"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-CR83-59JC-76JR
Vulnerability from github – Published: 2024-05-03 03:31 – Updated: 2024-05-03 03:31Foxit PDF Reader Annotation Use-After-Free Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader. 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 Annotation 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 in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-22037.
{
"affected": [],
"aliases": [
"CVE-2023-42098"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-03T03:15:47Z",
"severity": "LOW"
},
"details": "Foxit PDF Reader Annotation Use-After-Free Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the handling of Annotation 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 in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-22037.",
"id": "GHSA-cr83-59jc-76jr",
"modified": "2024-05-03T03:31:01Z",
"published": "2024-05-03T03:31:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42098"
},
{
"type": "WEB",
"url": "https://www.foxit.com/support/security-bulletins.html"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1431"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-CR8J-R4WM-5QHM
Vulnerability from github – Published: 2026-10-21 00:32 – Updated: 2026-10-21 00:32Use after free in CredentialProvider in Google Chrome on on Windows prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
{
"affected": [],
"aliases": [
"CVE-2026-113011"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-20T22:18:51Z",
"severity": "HIGH"
},
"details": "Use after free in CredentialProvider in Google Chrome on on Windows prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)",
"id": "GHSA-cr8j-r4wm-5qhm",
"modified": "2026-10-21T00:32:38Z",
"published": "2026-10-21T00:32:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113011"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/498843754"
}
],
"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
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.