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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
10929 vulnerabilities reference this CWE, most recent first.
GHSA-W3FW-6H3J-5R9Q
Vulnerability from github – Published: 2022-05-24 17:41 – Updated: 2022-05-24 17:41Use after free in Fonts in Google Chrome prior to 88.0.4324.146 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
{
"affected": [],
"aliases": [
"CVE-2021-21145"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-02-09T15:15:00Z",
"severity": "HIGH"
},
"details": "Use after free in Fonts in Google Chrome prior to 88.0.4324.146 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.",
"id": "GHSA-w3fw-6h3j-5r9q",
"modified": "2022-05-24T17:41:36Z",
"published": "2022-05-24T17:41:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21145"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1154965"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202104-08"
}
],
"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-W3GF-4959-2377
Vulnerability from github – Published: 2026-06-25 03:31 – Updated: 2026-06-25 03:31sys/kern/sysv_sem.c in OpenBSD through 7.9 has a use-after-free allowing local privilege escalation to root. This is a context switch use-after-free after tsleep in sys_semget().
{
"affected": [],
"aliases": [
"CVE-2026-57589"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-25T01:16:26Z",
"severity": "HIGH"
},
"details": "sys/kern/sysv_sem.c in OpenBSD through 7.9 has a use-after-free allowing local privilege escalation to root. This is a context switch use-after-free after tsleep in sys_semget().",
"id": "GHSA-w3gf-4959-2377",
"modified": "2026-06-25T03:31:40Z",
"published": "2026-06-25T03:31:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57589"
},
{
"type": "WEB",
"url": "https://github.com/openbsd/src/commit/1957873d2063db11dab780eca75b5e629d1e838d"
},
{
"type": "WEB",
"url": "https://openai.com/index/patch-the-planet"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-W3H2-4JRJ-6MCC
Vulnerability from github – Published: 2023-08-24 18:30 – Updated: 2024-04-04 07:10A potential use-after-free vulnerability existed in SVG Images if the Refresh Driver was destroyed at an inopportune time. This could have lead to memory corruption or a potentially exploitable crash. Note: This advisory was added on December 13th, 2022 after discovering it was inadvertently left out of the original advisory. The fix was included in the original release of Firefox 106. This vulnerability affects Firefox < 106.
{
"affected": [],
"aliases": [
"CVE-2022-46884"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-24T17:15:08Z",
"severity": "HIGH"
},
"details": "A potential use-after-free vulnerability existed in SVG Images if the Refresh Driver was destroyed at an inopportune time. This could have lead to memory corruption or a potentially exploitable crash.\n*Note*: This advisory was added on December 13th, 2022 after discovering it was inadvertently left out of the original advisory. The fix was included in the original release of Firefox 106. This vulnerability affects Firefox \u003c 106.",
"id": "GHSA-w3h2-4jrj-6mcc",
"modified": "2024-04-04T07:10:41Z",
"published": "2023-08-24T18:30:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-46884"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1786818"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2022-44"
}
],
"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-W3H3-52FR-JJHW
Vulnerability from github – Published: 2022-09-27 00:00 – Updated: 2025-05-21 21:31Use after free in Sign-In Flow in Google Chrome prior to 104.0.5112.101 allowed a remote attacker to potentially exploit heap corruption via specific UI interaction.
{
"affected": [],
"aliases": [
"CVE-2022-2858"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-09-26T16:15:00Z",
"severity": "HIGH"
},
"details": "Use after free in Sign-In Flow in Google Chrome prior to 104.0.5112.101 allowed a remote attacker to potentially exploit heap corruption via specific UI interaction.",
"id": "GHSA-w3h3-52fr-jjhw",
"modified": "2025-05-21T21:31:07Z",
"published": "2022-09-27T00:00:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2858"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2022/08/stable-channel-update-for-desktop_16.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1341918"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4NMJURTG5RO3TGD7ZMIQ6Z4ZZ3SAVYE"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T4NMJURTG5RO3TGD7ZMIQ6Z4ZZ3SAVYE"
}
],
"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-W3H3-5P95-FV5G
Vulnerability from github – Published: 2022-05-13 01:23 – Updated: 2022-05-13 01:23Use-after-free vulnerability in the nsHTMLCSSUtils::CreateCSSPropertyTxn function in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.
{
"affected": [],
"aliases": [
"CVE-2012-4179"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2012-10-10T17:55:00Z",
"severity": "HIGH"
},
"details": "Use-after-free vulnerability in the nsHTMLCSSUtils::CreateCSSPropertyTxn function in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.",
"id": "GHSA-w3h3-5p95-fv5g",
"modified": "2022-05-13T01:23:43Z",
"published": "2022-05-13T01:23:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2012-4179"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=785574"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/79157"
},
{
"type": "WEB",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16882"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2012-1351.html"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/50856"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/50892"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/50904"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/50935"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/50936"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/50984"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/51181"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/55318"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2012/dsa-2565"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2012/dsa-2569"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2012/dsa-2572"
},
{
"type": "WEB",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2012:163"
},
{
"type": "WEB",
"url": "http://www.mozilla.org/security/announce/2012/mfsa2012-85.html"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-1611-1"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-W3H4-VPFJ-X3XQ
Vulnerability from github – Published: 2022-05-14 01:14 – Updated: 2025-04-20 03:31libical 1.0 allows remote attackers to cause a denial of service (use-after-free) via a crafted ics file.
{
"affected": [],
"aliases": [
"CVE-2016-5824"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-01-27T22:59:00Z",
"severity": "MODERATE"
},
"details": "libical 1.0 allows remote attackers to cause a denial of service (use-after-free) via a crafted ics file.",
"id": "GHSA-w3h4-vpfj-x3xq",
"modified": "2025-04-20T03:31:39Z",
"published": "2022-05-14T01:14:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-5824"
},
{
"type": "WEB",
"url": "https://github.com/libical/libical/issues/235"
},
{
"type": "WEB",
"url": "https://github.com/libical/libical/issues/251"
},
{
"type": "WEB",
"url": "https://github.com/libical/libical/issues/286"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2019:0269"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2019:0270"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1275400"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201904-02"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201904-07"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3897-1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2016/06/25/4"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2017/01/20/16"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/91459"
}
],
"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-W3HV-RWGR-CRX3
Vulnerability from github – Published: 2024-02-29 03:33 – Updated: 2024-08-29 21:31bt_sock_recvmsg in net/bluetooth/af_bluetooth.c in the Linux kernel through 6.6.8 has a use-after-free because of a bt_sock_ioctl race condition.
{
"affected": [],
"aliases": [
"CVE-2023-51779"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-29T01:42:05Z",
"severity": "HIGH"
},
"details": "bt_sock_recvmsg in net/bluetooth/af_bluetooth.c in the Linux kernel through 6.6.8 has a use-after-free because of a bt_sock_ioctl race condition.",
"id": "GHSA-w3hv-rwgr-crx3",
"modified": "2024-08-29T21:31:01Z",
"published": "2024-02-29T03:33:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-51779"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/2e07e8348ea454615e268222ae3fc240421be768"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-W3J7-W57F-MRWQ
Vulnerability from github – Published: 2023-08-03 18:30 – Updated: 2024-05-22 18:30A use-after-free vulnerability was found in the cxgb4 driver in the Linux kernel. The bug occurs when the cxgb4 device is detaching due to a possible rearming of the flower_stats_timer from the work queue. This flaw allows a local user to crash the system, causing a denial of service condition.
{
"affected": [],
"aliases": [
"CVE-2023-4133"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-03T15:15:33Z",
"severity": "MODERATE"
},
"details": "A use-after-free vulnerability was found in the cxgb4 driver in the Linux kernel. The bug occurs when the cxgb4 device is detaching due to a possible rearming of the flower_stats_timer from the work queue. This flaw allows a local user to crash the system, causing a denial of service condition.",
"id": "GHSA-w3j7-w57f-mrwq",
"modified": "2024-05-22T18:30:37Z",
"published": "2023-08-03T18:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4133"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:2394"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:2950"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2024:3138"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2023-4133"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2221702"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-W3JP-CXWR-6JWC
Vulnerability from github – Published: 2026-05-11 21:31 – Updated: 2026-05-12 18:30A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. An attacker in a privileged network position may be able to perform denial-of-service attack using crafted Wi-Fi packets.
{
"affected": [],
"aliases": [
"CVE-2026-28994"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-11T21:18:59Z",
"severity": "MODERATE"
},
"details": "A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. An attacker in a privileged network position may be able to perform denial-of-service attack using crafted Wi-Fi packets.",
"id": "GHSA-w3jp-cxwr-6jwc",
"modified": "2026-05-12T18:30:37Z",
"published": "2026-05-11T21:31:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28994"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127110"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127111"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127115"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127116"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127117"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127118"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/127119"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-W3MR-X868-44RJ
Vulnerability from github – Published: 2022-05-17 02:18 – Updated: 2024-02-02 18:30Use-after-free vulnerability in the NetWare Core Protocol (NCP) feature in Novell eDirectory 8.7.3 SP10 before 8.7.3 SP10 FTF1 and 8.8 SP2 for Windows allows remote attackers to cause a denial of service and possibly execute arbitrary code via a sequence of "Get NCP Extension Information By Name" requests that cause one thread to operate on memory after it has been freed in another thread, which triggers memory corruption, aka Novell Bug 373852.
{
"affected": [],
"aliases": [
"CVE-2008-5038"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2008-11-12T21:09:00Z",
"severity": "HIGH"
},
"details": "Use-after-free vulnerability in the NetWare Core Protocol (NCP) feature in Novell eDirectory 8.7.3 SP10 before 8.7.3 SP10 FTF1 and 8.8 SP2 for Windows allows remote attackers to cause a denial of service and possibly execute arbitrary code via a sequence of \"Get NCP Extension Information By Name\" requests that cause one thread to operate on memory after it has been freed in another thread, which triggers memory corruption, aka Novell Bug 373852.",
"id": "GHSA-w3mr-x868-44rj",
"modified": "2024-02-02T18:30:20Z",
"published": "2022-05-17T02:18:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2008-5038"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/46138"
},
{
"type": "WEB",
"url": "http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=748"
},
{
"type": "WEB",
"url": "http://osvdb.org/48206"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/32395"
},
{
"type": "WEB",
"url": "http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5037180.html"
},
{
"type": "WEB",
"url": "http://support.novell.com/docs/Readmes/InfoDocument/patchbuilder/readme_5037181.html"
},
{
"type": "WEB",
"url": "http://www.novell.com/support/viewContent.do?externalId=3426981"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/31956"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id?1021117"
},
{
"type": "WEB",
"url": "http://www.vupen.com/english/advisories/2008/2937"
}
],
"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"
}
]
}
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.