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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9841 vulnerabilities reference this CWE, most recent first.
GHSA-GXJF-M829-568R
Vulnerability from github – Published: 2022-05-14 02:21 – Updated: 2025-10-22 00:31Adobe Flash Player versions 23.0.0.207 and earlier, 11.2.202.644 and earlier have an exploitable use after free vulnerability in the TextField class. Successful exploitation could lead to arbitrary code execution.
{
"affected": [],
"aliases": [
"CVE-2016-7892"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-12-15T06:59:00Z",
"severity": "CRITICAL"
},
"details": "Adobe Flash Player versions 23.0.0.207 and earlier, 11.2.202.644 and earlier have an exploitable use after free vulnerability in the TextField class. Successful exploitation could lead to arbitrary code execution.",
"id": "GHSA-gxjf-m829-568r",
"modified": "2025-10-22T00:31:17Z",
"published": "2022-05-14T02:21:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-7892"
},
{
"type": "WEB",
"url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-154"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/flash-player/apsb16-39.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201701-17"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-7892"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00064.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-updates/2016-12/msg00112.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2016-2947.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/94877"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1037442"
}
],
"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-GXM6-PX42-MPJC
Vulnerability from github – Published: 2026-03-04 15:30 – Updated: 2026-07-14 15:31In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: fix use-after-free in nf_tables_addchain()
nf_tables_addchain() publishes the chain to table->chains via list_add_tail_rcu() (in nft_chain_add()) before registering hooks. If nf_tables_register_hook() then fails, the error path calls nft_chain_del() (list_del_rcu()) followed by nf_tables_chain_destroy() with no RCU grace period in between.
This creates two use-after-free conditions:
1) Control-plane: nf_tables_dump_chains() traverses table->chains under rcu_read_lock(). A concurrent dump can still be walking the chain when the error path frees it.
2) Packet path: for NFPROTO_INET, nf_register_net_hook() briefly installs the IPv4 hook before IPv6 registration fails. Packets entering nft_do_chain() via the transient IPv4 hook can still be dereferencing chain->blob_gen_X when the error path frees the chain.
Add synchronize_rcu() between nft_chain_del() and the chain destroy so that all RCU readers -- both dump threads and in-flight packet evaluation -- have finished before the chain is freed.
{
"affected": [],
"aliases": [
"CVE-2026-23231"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-04T13:15:58Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: fix use-after-free in nf_tables_addchain()\n\nnf_tables_addchain() publishes the chain to table-\u003echains via\nlist_add_tail_rcu() (in nft_chain_add()) before registering hooks.\nIf nf_tables_register_hook() then fails, the error path calls\nnft_chain_del() (list_del_rcu()) followed by nf_tables_chain_destroy()\nwith no RCU grace period in between.\n\nThis creates two use-after-free conditions:\n\n 1) Control-plane: nf_tables_dump_chains() traverses table-\u003echains\n under rcu_read_lock(). A concurrent dump can still be walking\n the chain when the error path frees it.\n\n 2) Packet path: for NFPROTO_INET, nf_register_net_hook() briefly\n installs the IPv4 hook before IPv6 registration fails. Packets\n entering nft_do_chain() via the transient IPv4 hook can still be\n dereferencing chain-\u003eblob_gen_X when the error path frees the\n chain.\n\nAdd synchronize_rcu() between nft_chain_del() and the chain destroy\nso that all RCU readers -- both dump threads and in-flight packet\nevaluation -- have finished before the chain is freed.",
"id": "GHSA-gxm6-px42-mpjc",
"modified": "2026-07-14T15:31:39Z",
"published": "2026-03-04T15:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23231"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-253495.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2a6586ecfa4ce1413daaafee250d2590e05f1a33"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2f9a4ffeb763aec822f8ff3d1e82202d27d46d4b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7017745068a9068904e1e7a1b170a5785647cc81"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/71e99ee20fc3f662555118cf1159443250647533"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dbd0af8083dd201f07c49110b2ee93710abdff28"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f3fe58ce37926a10115ede527d59b91bcc05400a"
}
],
"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-GXM7-3QJV-74R2
Vulnerability from github – Published: 2022-05-24 17:12 – Updated: 2022-05-24 17:12Adobe Acrobat and Reader versions 2020.006.20034 and earlier, 2017.011.30158 and earlier, 2017.011.30158 and earlier, 2015.006.30510 and earlier, and 2015.006.30510 and earlier have a use-after-free vulnerability. Successful exploitation could lead to arbitrary code execution .
{
"affected": [],
"aliases": [
"CVE-2020-3792"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-03-25T16:15:00Z",
"severity": "HIGH"
},
"details": "Adobe Acrobat and Reader versions 2020.006.20034 and earlier, 2017.011.30158 and earlier, 2017.011.30158 and earlier, 2015.006.30510 and earlier, and 2015.006.30510 and earlier have a use-after-free vulnerability. Successful exploitation could lead to arbitrary code execution .",
"id": "GHSA-gxm7-3qjv-74r2",
"modified": "2022-05-24T17:12:43Z",
"published": "2022-05-24T17:12:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-3792"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb20-13.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-GXM8-WMWQ-WW5F
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 content property of a XFA 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-6524.
{
"affected": [],
"aliases": [
"CVE-2018-17670"
],
"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 content property of a XFA 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-6524.",
"id": "GHSA-gxm8-wmwq-ww5f",
"modified": "2022-05-13T01:33:54Z",
"published": "2022-05-13T01:33:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-17670"
},
{
"type": "WEB",
"url": "https://www.foxitsoftware.com/support/security-bulletins.php"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-18-1163"
}
],
"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-GXP7-CX54-GR2M
Vulnerability from github – Published: 2026-06-18 18:35 – Updated: 2026-06-18 18:35A flaw was found in 389 Directory Server. During schema reload, the attr_syntax_swap_ht() function unconditionally frees attribute syntax information nodes, bypassing the refcount-based deferred deletion used elsewhere in the attribute syntax subsystem. If an administrator triggers schema reload while concurrent LDAP query traffic is active, worker threads may access freed memory, resulting in use-after-free or double-free and a denial of service (server crash).
{
"affected": [],
"aliases": [
"CVE-2026-11791"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-18T16:16:52Z",
"severity": "MODERATE"
},
"details": "A flaw was found in 389 Directory Server. During schema reload, the attr_syntax_swap_ht() function unconditionally frees attribute syntax information nodes, bypassing the refcount-based deferred deletion used elsewhere in the attribute syntax subsystem. If an administrator triggers schema reload while concurrent LDAP query traffic is active, worker threads may access freed memory, resulting in use-after-free or double-free and a denial of service (server crash).",
"id": "GHSA-gxp7-cx54-gr2m",
"modified": "2026-06-18T18:35:22Z",
"published": "2026-06-18T18:35:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11791"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-11791"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2485414"
},
{
"type": "WEB",
"url": "https://redhat.atlassian.net/browse/PSIRTSUPT-7600"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GXQM-5X7V-JGHQ
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-2022-28233"
],
"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-gxqm-5x7v-jghq",
"modified": "2022-05-12T00:00:47Z",
"published": "2022-05-12T00:00:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-28233"
},
{
"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-GXQP-9C84-PVRG
Vulnerability from github – Published: 2022-05-17 02:42 – Updated: 2022-05-17 02:42An issue was discovered in Contiki Operating System 3.0. A use-after-free vulnerability exists in httpd-simple.c in cc26xx-web-demo httpd, where upon a connection close event, the http_state structure was not deallocated properly, resulting in a NULL pointer dereference in the output processing function. This resulted in a board crash, which can be used to perform denial of service.
{
"affected": [],
"aliases": [
"CVE-2017-7295"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-05-28T00:29:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in Contiki Operating System 3.0. A use-after-free vulnerability exists in httpd-simple.c in cc26xx-web-demo httpd, where upon a connection close event, the http_state structure was not deallocated properly, resulting in a NULL pointer dereference in the output processing function. This resulted in a board crash, which can be used to perform denial of service.",
"id": "GHSA-gxqp-9c84-pvrg",
"modified": "2022-05-17T02:42:44Z",
"published": "2022-05-17T02:42:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7295"
},
{
"type": "WEB",
"url": "https://gist.github.com/jackmcbride/c9328627f1ee104ce84f3fb7eff42f1e"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GXR7-4MFG-37C7
Vulnerability from github – Published: 2025-09-18 15:30 – Updated: 2025-12-12 18:30In the Linux kernel, the following vulnerability has been resolved:
crypto: seqiv - Handle EBUSY correctly
As it is seqiv only handles the special return value of EINPROGERSS, which means that in all other cases it will free data related to the request.
However, as the caller of seqiv may specify MAY_BACKLOG, we also need to expect EBUSY and treat it in the same way. Otherwise backlogged requests will trigger a use-after-free.
{
"affected": [],
"aliases": [
"CVE-2023-53373"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-18T14:15:39Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: seqiv - Handle EBUSY correctly\n\nAs it is seqiv only handles the special return value of EINPROGERSS,\nwhich means that in all other cases it will free data related to the\nrequest.\n\nHowever, as the caller of seqiv may specify MAY_BACKLOG, we also need\nto expect EBUSY and treat it in the same way. Otherwise backlogged\nrequests will trigger a use-after-free.",
"id": "GHSA-gxr7-4mfg-37c7",
"modified": "2025-12-12T18:30:28Z",
"published": "2025-09-18T15:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53373"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1effbddaff60eeef8017c6dea1ee0ed970164d14"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/32e62025e5e52fbe4812ef044759de7010b15dbc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/36ec108b7bd7e280edb22de028467bd09d644620"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4d497e8b200a175094e0ac252ed878add39b8771"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/63551e4b7cbcd9914258827699eb2cb6ed6e4a16"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9477db935eb690f697d9bcc4f608927841bc8b36"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ae849d2f48019ff9c104e32bf588ccbfb200e971"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cc4d0d4251748a8a68026938f4055d2ac47c5719"
}
],
"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-GXV5-F49X-7HP5
Vulnerability from github – Published: 2025-02-11 21:32 – Updated: 2025-02-11 21:32PDF-XChange Editor AcroForm Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. 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 AcroForms. 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-25349.
{
"affected": [],
"aliases": [
"CVE-2025-0899"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-11T20:15:34Z",
"severity": "HIGH"
},
"details": "PDF-XChange Editor AcroForm Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. 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 AcroForms. 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-25349.",
"id": "GHSA-gxv5-f49x-7hp5",
"modified": "2025-02-11T21:32:07Z",
"published": "2025-02-11T21:32:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-0899"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-25-061"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-GXWG-HM3V-5JFQ
Vulnerability from github – Published: 2025-09-09 18:31 – Updated: 2025-09-09 18:31Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.
{
"affected": [],
"aliases": [
"CVE-2025-54908"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-09T17:16:02Z",
"severity": "HIGH"
},
"details": "Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.",
"id": "GHSA-gxwg-hm3v-5jfq",
"modified": "2025-09-09T18:31:22Z",
"published": "2025-09-09T18:31:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54908"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54908"
}
],
"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"
}
]
}
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.