Common Weakness Enumeration
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
10194 vulnerabilities reference this CWE, most recent first.
GHSA-HHM4-XGVR-X3RG
Vulnerability from github – Published: 2023-07-05 09:30 – Updated: 2024-04-04 05:23
VLAI
Details
Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to be stored in the main compartment resulting in a use-after-free. This vulnerability affects Firefox < 115, Firefox ESR < 102.13, and Thunderbird < 102.13.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2023-37202"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-05T09:15:09Z",
"severity": "HIGH"
},
"details": "Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to be stored in the main compartment resulting in a use-after-free. This vulnerability affects Firefox \u003c 115, Firefox ESR \u003c 102.13, and Thunderbird \u003c 102.13.",
"id": "GHSA-hhm4-xgvr-x3rg",
"modified": "2024-04-04T05:23:14Z",
"published": "2023-07-05T09:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-37202"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1834711"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/07/msg00006.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/07/msg00015.html"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5450"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5451"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2023-22"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2023-23"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2023-24"
}
],
"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-HHM7-RCC5-4HJC
Vulnerability from github – Published: 2024-11-04 12:32 – Updated: 2024-11-04 12:32
VLAI
Details
Memory corruption while processing IOCTL calls to unmap the buffers.
Severity
6.7 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-33033"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-04T10:15:06Z",
"severity": "MODERATE"
},
"details": "Memory corruption while processing IOCTL calls to unmap the buffers.",
"id": "GHSA-hhm7-rcc5-4hjc",
"modified": "2024-11-04T12:32:56Z",
"published": "2024-11-04T12:32:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-33033"
},
{
"type": "WEB",
"url": "https://docs.qualcomm.com/product/publicresources/securitybulletin/november-2024-bulletin.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HHMJ-863M-GPXG
Vulnerability from github – Published: 2022-05-13 01:33 – Updated: 2022-05-13 01:33
VLAI
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 id property of a aliasNode. 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-6472.
Severity
8.8 (High)
{
"affected": [],
"aliases": [
"CVE-2018-17636"
],
"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 id property of a aliasNode. 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-6472.",
"id": "GHSA-hhmj-863m-gpxg",
"modified": "2022-05-13T01:33:58Z",
"published": "2022-05-13T01:33:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-17636"
},
{
"type": "WEB",
"url": "https://www.foxitsoftware.com/support/security-bulletins.php"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-18-1209"
}
],
"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-HHQ7-4GXQ-Q8MP
Vulnerability from github – Published: 2024-02-28 09:30 – Updated: 2024-12-09 21:31
VLAI
Details
In the Linux kernel, the following vulnerability has been resolved:
spi: spi-zynqmp-gqspi: fix use-after-free in zynqmp_qspi_exec_op
When handling op->addr, it is using the buffer "tmpbuf" which has been freed. This will trigger a use-after-free KASAN warning. Let's use temporary variables to store op->addr.val and op->cmd.opcode to fix this issue.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2021-47048"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-28T09:15:40Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: spi-zynqmp-gqspi: fix use-after-free in zynqmp_qspi_exec_op\n\nWhen handling op-\u003eaddr, it is using the buffer \"tmpbuf\" which has been\nfreed. This will trigger a use-after-free KASAN warning. Let\u0027s use\ntemporary variables to store op-\u003eaddr.val and op-\u003ecmd.opcode to fix\nthis issue.",
"id": "GHSA-hhq7-4gxq-q8mp",
"modified": "2024-12-09T21:31:00Z",
"published": "2024-02-28T09:30:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47048"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1231279389b5e638bc3b66b9741c94077aed4b5a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/23269ac9f123eca3aea7682d3345c02e71ed696c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a2c5bedb2d55dd27c642c7b9fb6886d7ad7bdb58"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d67e0d6bd92ebbb0294e7062bbf5cdc773764e62"
}
],
"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-HHVH-8925-WVQG
Vulnerability from github – Published: 2022-05-24 19:06 – Updated: 2022-05-24 19:06
VLAI
Details
Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by a Use After Free vulnerability when executing search queries through Javascript. An unauthenticated attacker could leverage this vulnerability to achieve 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-2021-28562"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-06-28T14:15:00Z",
"severity": "HIGH"
},
"details": "Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by a Use After Free vulnerability when executing search queries through Javascript. An unauthenticated attacker could leverage this vulnerability to achieve 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-hhvh-8925-wvqg",
"modified": "2022-05-24T19:06:25Z",
"published": "2022-05-24T19:06:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-28562"
},
{
"type": "WEB",
"url": "https://helpx.adobe.com/security/products/acrobat/apsb21-29.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-HHW2-PQHF-VMX2
Vulnerability from github – Published: 2021-08-25 20:49 – Updated: 2025-05-23 18:29
VLAI
Summary
Use after free in actix-utils
Details
An issue was discovered in the actix-utils crate before 2.0.0 for Rust. The Cell implementation allows obtaining more than one mutable reference to the same data.
Severity
9.1 (Critical)
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "actix-utils"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2020-35898"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": true,
"github_reviewed_at": "2021-08-19T20:53:53Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "An issue was discovered in the actix-utils crate before 2.0.0 for Rust. The Cell implementation allows obtaining more than one mutable reference to the same data.",
"id": "GHSA-hhw2-pqhf-vmx2",
"modified": "2025-05-23T18:29:56Z",
"published": "2021-08-25T20:49:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-35898"
},
{
"type": "WEB",
"url": "https://github.com/actix/actix-net/issues/160"
},
{
"type": "WEB",
"url": "https://github.com/actix/actix-net/commit/0dca1a705ad1ff4885b3491ecb809a808e1de66c"
},
{
"type": "PACKAGE",
"url": "https://github.com/actix/actix-net"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2020-0045.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Use after free in actix-utils"
}
GHSA-HHXJ-VXV9-CX4F
Vulnerability from github – Published: 2025-08-12 18:31 – Updated: 2025-08-12 18:31
VLAI
Details
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Severity
7.8 (High)
{
"affected": [],
"aliases": [
"CVE-2025-49761"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-12T18:15:31Z",
"severity": "HIGH"
},
"details": "Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-hhxj-vxv9-cx4f",
"modified": "2025-08-12T18:31:30Z",
"published": "2025-08-12T18:31:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-49761"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49761"
}
],
"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-HJ2R-678G-RXMG
Vulnerability from github – Published: 2025-05-06 09:31 – Updated: 2025-05-06 09:31
VLAI
Details
Memory corruption while handling multiple IOCTL calls from userspace to operate DMA operations.
Severity
6.6 (Medium)
{
"affected": [],
"aliases": [
"CVE-2024-45583"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-06T09:15:20Z",
"severity": "MODERATE"
},
"details": "Memory corruption while handling multiple IOCTL calls from userspace to operate DMA operations.",
"id": "GHSA-hj2r-678g-rxmg",
"modified": "2025-05-06T09:31:33Z",
"published": "2025-05-06T09:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45583"
},
{
"type": "WEB",
"url": "https://docs.qualcomm.com/product/publicresources/securitybulletin/may-2025-bulletin.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-HJ7C-HMHF-F2JQ
Vulnerability from github – Published: 2022-05-24 17:02 – Updated: 2024-04-04 02:41
VLAI
Details
In the Linux kernel 5.0.21, a setxattr operation, after a mount of a crafted ext4 image, can cause a slab-out-of-bounds write access because of an ext4_xattr_set_entry use-after-free in fs/ext4/xattr.c when a large old_size value is used in a memset call.
Severity
6.5 (Medium)
{
"affected": [],
"aliases": [
"CVE-2019-19319"
],
"database_specific": {
"cwe_ids": [
"CWE-416",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-11-27T23:15:00Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel 5.0.21, a setxattr operation, after a mount of a crafted ext4 image, can cause a slab-out-of-bounds write access because of an ext4_xattr_set_entry use-after-free in fs/ext4/xattr.c when a large old_size value is used in a memset call.",
"id": "GHSA-hj7c-hmhf-f2jq",
"modified": "2024-04-04T02:41:18Z",
"published": "2022-05-24T17:02:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-19319"
},
{
"type": "WEB",
"url": "https://bugzilla.suse.com/show_bug.cgi?id=1158021"
},
{
"type": "WEB",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=345c0dbf3a30"
},
{
"type": "WEB",
"url": "https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19319"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20200103-0001"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4391-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2020/dsa-4698"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HJ7W-JJQ4-XH7Q
Vulnerability from github – Published: 2022-05-24 17:38 – Updated: 2022-05-24 17:38
VLAI
Details
User after free in safe browsing in Google Chrome prior to 87.0.4280.141 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.
{
"affected": [],
"aliases": [
"CVE-2021-21115"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-01-08T19:15:00Z",
"severity": "CRITICAL"
},
"details": "User after free in safe browsing in Google Chrome prior to 87.0.4280.141 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.",
"id": "GHSA-hj7w-jjq4-xh7q",
"modified": "2022-05-24T17:38:26Z",
"published": "2022-05-24T17:38:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21115"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1157814"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VVUWIJKZTZTG6G475OR6PP4WPQBVM6PS"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z6P6AVVFP7B2M4H7TJQBASRZIBLOTUFN"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202101-05"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2021/dsa-4832"
}
],
"schema_version": "1.4.0",
"severity": []
}
Mitigation
Architecture and Design
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
Implementation
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.