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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9811 vulnerabilities reference this CWE, most recent first.
GHSA-6VGQ-8QJQ-H578
Vulnerability from github – Published: 2024-11-13 12:32 – Updated: 2025-11-04 18:31Issue summary: Calling the OpenSSL API function SSL_free_buffers may cause memory to be accessed that was previously freed in some situations
Impact summary: A use after free can have a range of potential consequences such as the corruption of valid data, crashes or execution of arbitrary code. However, only applications that directly call the SSL_free_buffers function are affected by this issue. Applications that do not call this function are not vulnerable. Our investigations indicate that this function is rarely used by applications.
The SSL_free_buffers function is used to free the internal OpenSSL buffer used when processing an incoming record from the network. The call is only expected to succeed if the buffer is not currently in use. However, two scenarios have been identified where the buffer is freed even when still in use.
The first scenario occurs where a record header has been received from the network and processed by OpenSSL, but the full record body has not yet arrived. In this case calling SSL_free_buffers will succeed even though a record has only been partially processed and the buffer is still in use.
The second scenario occurs where a full record containing application data has been received and processed by OpenSSL but the application has only read part of this data. Again a call to SSL_free_buffers will succeed even though the buffer is still in use.
While these scenarios could occur accidentally during normal operation a malicious attacker could attempt to engineer a stituation where this occurs. We are not aware of this issue being actively exploited.
The FIPS modules in 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.
{
"affected": [],
"aliases": [
"CVE-2024-4741"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-13T11:15:04Z",
"severity": "HIGH"
},
"details": "Issue summary: Calling the OpenSSL API function SSL_free_buffers may cause\nmemory to be accessed that was previously freed in some situations\n\nImpact summary: A use after free can have a range of potential consequences such\nas the corruption of valid data, crashes or execution of arbitrary code.\nHowever, only applications that directly call the SSL_free_buffers function are\naffected by this issue. Applications that do not call this function are not\nvulnerable. Our investigations indicate that this function is rarely used by\napplications.\n\nThe SSL_free_buffers function is used to free the internal OpenSSL buffer used\nwhen processing an incoming record from the network. The call is only expected\nto succeed if the buffer is not currently in use. However, two scenarios have\nbeen identified where the buffer is freed even when still in use.\n\nThe first scenario occurs where a record header has been received from the\nnetwork and processed by OpenSSL, but the full record body has not yet arrived.\nIn this case calling SSL_free_buffers will succeed even though a record has only\nbeen partially processed and the buffer is still in use.\n\nThe second scenario occurs where a full record containing application data has\nbeen received and processed by OpenSSL but the application has only read part of\nthis data. Again a call to SSL_free_buffers will succeed even though the buffer\nis still in use.\n\nWhile these scenarios could occur accidentally during normal operation a\nmalicious attacker could attempt to engineer a stituation where this occurs.\nWe are not aware of this issue being actively exploited.\n\nThe FIPS modules in 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.",
"id": "GHSA-6vgq-8qjq-h578",
"modified": "2025-11-04T18:31:30Z",
"published": "2024-11-13T12:32:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-4741"
},
{
"type": "WEB",
"url": "https://github.com/openssl/openssl/commit/704f725b96aa373ee45ecfb23f6abfe8be8d9177"
},
{
"type": "WEB",
"url": "https://github.com/openssl/openssl/commit/b3f0eb0a295f58f16ba43ba99dad70d4ee5c437d"
},
{
"type": "WEB",
"url": "https://github.com/openssl/openssl/commit/c88c3de51020c37e8706bf7a682a162593053aac"
},
{
"type": "WEB",
"url": "https://github.com/openssl/openssl/commit/e5093133c35ca82874ad83697af76f4b0f7e3bd8"
},
{
"type": "WEB",
"url": "https://github.openssl.org/openssl/extended-releases/commit/f7a045f3143fc6da2ee66bf52d8df04829590dd4"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00033.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00000.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20240621-0004"
},
{
"type": "WEB",
"url": "https://www.openssl.org/news/secadv/20240528.txt"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-6VHQ-R37J-H8VQ
Vulnerability from github – Published: 2024-04-02 21:30 – Updated: 2024-04-02 21:30Foxit PDF Reader Doc Object Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code 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 Doc 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 vulnerability to execute code in the context of the current process. Was ZDI-CAN-22705.
{
"affected": [],
"aliases": [
"CVE-2024-30338"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-02T20:15:10Z",
"severity": "HIGH"
},
"details": "Foxit PDF Reader Doc Object Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code 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 Doc 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 vulnerability to execute code in the context of the current process. Was ZDI-CAN-22705.",
"id": "GHSA-6vhq-r37j-h8vq",
"modified": "2024-04-02T21:30:27Z",
"published": "2024-04-02T21:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-30338"
},
{
"type": "WEB",
"url": "https://www.foxit.com/support/security-bulletins.html"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-319"
}
],
"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-6VJ2-2GV4-3Q34
Vulnerability from github – Published: 2026-06-09 00:33 – Updated: 2026-06-09 03:31Use after free in ViewTransitions in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-11646"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-09T00:16:47Z",
"severity": "HIGH"
},
"details": "Use after free in ViewTransitions in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-6vj2-2gv4-3q34",
"modified": "2026-06-09T03:31:39Z",
"published": "2026-06-09T00:33:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11646"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744567.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/517168239"
}
],
"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-6VJ2-GJW9-6MGJ
Vulnerability from github – Published: 2026-05-08 15:31 – Updated: 2026-05-20 21:31In the Linux kernel, the following vulnerability has been resolved:
usb: renesas_usbhs: fix use-after-free in ISR during device removal
In usbhs_remove(), the driver frees resources (including the pipe array) while the interrupt handler (usbhs_interrupt) is still registered. If an interrupt fires after usbhs_pipe_remove() but before the driver is fully unbound, the ISR may access freed memory, causing a use-after-free.
Fix this by calling devm_free_irq() before freeing resources. This ensures the interrupt handler is both disabled and synchronized (waits for any running ISR to complete) before usbhs_pipe_remove() is called.
{
"affected": [],
"aliases": [
"CVE-2026-43426"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-08T15:16:54Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: renesas_usbhs: fix use-after-free in ISR during device removal\n\nIn usbhs_remove(), the driver frees resources (including the pipe array)\nwhile the interrupt handler (usbhs_interrupt) is still registered. If an\ninterrupt fires after usbhs_pipe_remove() but before the driver is fully\nunbound, the ISR may access freed memory, causing a use-after-free.\n\nFix this by calling devm_free_irq() before freeing resources. This ensures\nthe interrupt handler is both disabled and synchronized (waits for any\nrunning ISR to complete) before usbhs_pipe_remove() is called.",
"id": "GHSA-6vj2-gjw9-6mgj",
"modified": "2026-05-20T21:31:28Z",
"published": "2026-05-08T15:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43426"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0b7d11fd6e742ecc0b1eca44b4f0b93140c74bae"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1899edac312ef17a7234851686e8a703f56d0a84"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3cbc242b88c607f55da3d0d0d336b49bf1e20412"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/51afaf919bbaacdd9cc9e146033ae0a743a42dd7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6287e0c01ccb818e7214f88d885ffb7c9e81b0e0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6ffe44f022c95b1b29c691d2169c5abc046f7580"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9c6159d5b72d5fc265cce5da04f27d730b552e69"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c7012fc73dab4829404fedeeaa8531f12ac8545f"
}
],
"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-6VJ5-V9M4-VVMG
Vulnerability from github – Published: 2024-03-05 09:31 – Updated: 2024-08-27 21:31swftools v0.9.2 was discovered to contain a segmentation violation via the function free_lines at swftools/lib/modules/swfshape.c.
{
"affected": [],
"aliases": [
"CVE-2024-26333"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-05T08:15:39Z",
"severity": "MODERATE"
},
"details": "swftools v0.9.2 was discovered to contain a segmentation violation via the function free_lines at swftools/lib/modules/swfshape.c.",
"id": "GHSA-6vj5-v9m4-vvmg",
"modified": "2024-08-27T21:31:10Z",
"published": "2024-03-05T09:31:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26333"
},
{
"type": "WEB",
"url": "https://github.com/matthiaskramm/swftools/issues/219"
}
],
"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-6VPR-2CH7-H948
Vulnerability from github – Published: 2022-05-17 02:32 – Updated: 2025-04-20 03:35Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable use after free vulnerability in the JavaScript engine's annotation-related API. Successful exploitation could lead to arbitrary code execution.
{
"affected": [],
"aliases": [
"CVE-2017-3047"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-04-12T14:59:00Z",
"severity": "HIGH"
},
"details": "Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable use after free vulnerability in the JavaScript engine\u0027s annotation-related API. Successful exploitation could lead to arbitrary code execution.",
"id": "GHSA-6vpr-2ch7-h948",
"modified": "2025-04-20T03:35:56Z",
"published": "2022-05-17T02:32:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-3047"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb17-11.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/97550"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1038228"
},
{
"type": "WEB",
"url": "http://www.zerodayinitiative.com/advisories/ZDI-17-271"
}
],
"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-6VQ9-4G76-FWP8
Vulnerability from github – Published: 2022-05-24 17:42 – Updated: 2022-05-24 17:42Use after free issue in audio modules while removing and freeing objects during list iteration due to incorrect usage of macro in Snapdragon Compute, Snapdragon Industrial IOT, Snapdragon Mobile
{
"affected": [],
"aliases": [
"CVE-2020-11147"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-02-22T07:15:00Z",
"severity": "MODERATE"
},
"details": "Use after free issue in audio modules while removing and freeing objects during list iteration due to incorrect usage of macro in Snapdragon Compute, Snapdragon Industrial IOT, Snapdragon Mobile",
"id": "GHSA-6vq9-4g76-fwp8",
"modified": "2022-05-24T17:42:43Z",
"published": "2022-05-24T17:42:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-11147"
},
{
"type": "WEB",
"url": "https://www.qualcomm.com/company/product-security/bulletins/february-2021-bulletin"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-6VQJ-7HPC-PVFJ
Vulnerability from github – Published: 2023-05-03 21:30 – Updated: 2024-04-04 03:47redox-os v0.1.0 was discovered to contain a use-after-free bug via the gethostbyaddr() function at /src/header/netdb/mod.rs.
{
"affected": [],
"aliases": [
"CVE-2020-22429"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-05-03T20:15:09Z",
"severity": "HIGH"
},
"details": "redox-os v0.1.0 was discovered to contain a use-after-free bug via the gethostbyaddr() function at /src/header/netdb/mod.rs.",
"id": "GHSA-6vqj-7hpc-pvfj",
"modified": "2024-04-04T03:47:16Z",
"published": "2023-05-03T21:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-22429"
},
{
"type": "WEB",
"url": "https://burtonqin.github.io/posts/2023/04/CVE-2020-22429"
},
{
"type": "WEB",
"url": "https://gitlab.redox-os.org/redox-os/relibc/issues/159"
}
],
"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-6VQP-9FHP-H9JW
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 subtype property of a Annotation 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-6820.
{
"affected": [],
"aliases": [
"CVE-2018-17673"
],
"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 subtype property of a Annotation 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-6820.",
"id": "GHSA-6vqp-9fhp-h9jw",
"modified": "2022-05-13T01:33:53Z",
"published": "2022-05-13T01:33:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-17673"
},
{
"type": "WEB",
"url": "https://www.foxitsoftware.com/support/security-bulletins.php"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-18-1192"
}
],
"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-6VR6-9P4M-QV5V
Vulnerability from github – Published: 2022-05-14 03:19 – Updated: 2024-10-21 15:32Use-after-free vulnerability in the nsFrameManager::CaptureFrameState function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 allows remote attackers to execute arbitrary code by leveraging improper interaction between restyling and the Web Animations model implementation.
{
"affected": [],
"aliases": [
"CVE-2016-5274"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-09-22T22:59:00Z",
"severity": "CRITICAL"
},
"details": "Use-after-free vulnerability in the nsFrameManager::CaptureFrameState function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird \u003c 45.4 allows remote attackers to execute arbitrary code by leveraging improper interaction between restyling and the Web Animations model implementation.",
"id": "GHSA-6vr6-9p4m-qv5v",
"modified": "2024-10-21T15:32:16Z",
"published": "2022-05-14T03:19:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-5274"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1282076"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/201701-15"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2016-86"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2016-88"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2016-1912.html"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2016/dsa-3674"
},
{
"type": "WEB",
"url": "http://www.mozilla.org/security/announce/2016/mfsa2016-85.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/93049"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id/1036852"
}
],
"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"
}
]
}
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.