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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9868 vulnerabilities reference this CWE, most recent first.
GHSA-HM7G-G733-G35G
Vulnerability from github – Published: 2026-01-23 18:31 – Updated: 2026-02-26 18:31In the Linux kernel, the following vulnerability has been resolved:
ublk: fix use-after-free in ublk_partition_scan_work
A race condition exists between the async partition scan work and device teardown that can lead to a use-after-free of ub->ub_disk:
- ublk_ctrl_start_dev() schedules partition_scan_work after add_disk()
- ublk_stop_dev() calls ublk_stop_dev_unlocked() which does:
- del_gendisk(ub->ub_disk)
- ublk_detach_disk() sets ub->ub_disk = NULL
- put_disk() which may free the disk
- The worker ublk_partition_scan_work() then dereferences ub->ub_disk leading to UAF
Fix this by using ublk_get_disk()/ublk_put_disk() in the worker to hold a reference to the disk during the partition scan. The spinlock in ublk_get_disk() synchronizes with ublk_detach_disk() ensuring the worker either gets a valid reference or sees NULL and exits early.
Also change flush_work() to cancel_work_sync() to avoid running the partition scan work unnecessarily when the disk is already detached.
{
"affected": [],
"aliases": [
"CVE-2026-22995"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-23T16:15:55Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nublk: fix use-after-free in ublk_partition_scan_work\n\nA race condition exists between the async partition scan work and device\nteardown that can lead to a use-after-free of ub-\u003eub_disk:\n\n1. ublk_ctrl_start_dev() schedules partition_scan_work after add_disk()\n2. ublk_stop_dev() calls ublk_stop_dev_unlocked() which does:\n - del_gendisk(ub-\u003eub_disk)\n - ublk_detach_disk() sets ub-\u003eub_disk = NULL\n - put_disk() which may free the disk\n3. The worker ublk_partition_scan_work() then dereferences ub-\u003eub_disk\n leading to UAF\n\nFix this by using ublk_get_disk()/ublk_put_disk() in the worker to hold\na reference to the disk during the partition scan. The spinlock in\nublk_get_disk() synchronizes with ublk_detach_disk() ensuring the worker\neither gets a valid reference or sees NULL and exits early.\n\nAlso change flush_work() to cancel_work_sync() to avoid running the\npartition scan work unnecessarily when the disk is already detached.",
"id": "GHSA-hm7g-g733-g35g",
"modified": "2026-02-26T18:31:35Z",
"published": "2026-01-23T18:31:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22995"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/72e28774e9644c2bdbb4920842fbf77103a15a85"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f0d385f6689f37a2828c686fb279121df006b4cb"
}
],
"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-HM82-RJQC-48FQ
Vulnerability from github – Published: 2022-05-24 17:35 – Updated: 2022-05-24 17:35An issue was discovered in the Linux kernel before 5.2.6. On NUMA systems, the Linux fair scheduler has a use-after-free in show_numa_stats() because NUMA fault statistics are inappropriately freed, aka CID-16d51a590a8c.
{
"affected": [],
"aliases": [
"CVE-2019-20934"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-11-28T07:15:00Z",
"severity": "LOW"
},
"details": "An issue was discovered in the Linux kernel before 5.2.6. On NUMA systems, the Linux fair scheduler has a use-after-free in show_numa_stats() because NUMA fault statistics are inappropriately freed, aka CID-16d51a590a8c.",
"id": "GHSA-hm82-rjqc-48fq",
"modified": "2022-05-24T17:35:00Z",
"published": "2022-05-24T17:35:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20934"
},
{
"type": "WEB",
"url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1913"
},
{
"type": "WEB",
"url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16d51a590a8ce3befb1308e0e7ab77f3b661af33"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-HM8G-PXH5-8XGX
Vulnerability from github – Published: 2024-03-06 09:30 – Updated: 2024-12-12 18:30In the Linux kernel, the following vulnerability has been resolved:
jfs: fix uaf in jfs_evict_inode
When the execution of diMount(ipimap) fails, the object ipimap that has been released may be accessed in diFreeSpecial(). Asynchronous ipimap release occurs when rcu_core() calls jfs_free_node().
Therefore, when diMount(ipimap) fails, sbi->ipimap should not be initialized as ipimap.
{
"affected": [],
"aliases": [
"CVE-2023-52600"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-06T07:15:10Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: fix uaf in jfs_evict_inode\n\nWhen the execution of diMount(ipimap) fails, the object ipimap that has been\nreleased may be accessed in diFreeSpecial(). Asynchronous ipimap release occurs\nwhen rcu_core() calls jfs_free_node().\n\nTherefore, when diMount(ipimap) fails, sbi-\u003eipimap should not be initialized as\nipimap.",
"id": "GHSA-hm8g-pxh5-8xgx",
"modified": "2024-12-12T18:30:50Z",
"published": "2024-03-06T09:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52600"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1696d6d7d4a1b373e96428d0fe1166bd7c3c795e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/32e8f2d95528d45828c613417cb2827d866cbdce"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/81b4249ef37297fb17ba102a524039a05c6c5d35"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8e44dc3f96e903815dab1d74fff8faafdc6feb61"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/93df0a2a0b3cde2d7ab3a52ed46ea1d6d4aaba5f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bacdaa04251382d7efd4f09f9a0686bfcc297e2e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bc6ef64dbe71136f327d63b2b9071b828af2c2a8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e0e1958f4c365e380b17ccb35617345b31ef7bf3"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.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-HM8V-8C3V-CXFQ
Vulnerability from github – Published: 2025-10-03 12:33 – Updated: 2026-06-01 06:30A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.
{
"affected": [],
"aliases": [
"CVE-2025-11234"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-03T11:15:30Z",
"severity": "HIGH"
},
"details": "A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.",
"id": "GHSA-hm8v-8c3v-cxfq",
"modified": "2026-06-01T06:30:25Z",
"published": "2025-10-03T12:33:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11234"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2025:23228"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0326"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0332"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:0702"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:1831"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:18772"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:22147"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3077"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:3165"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:5578"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2025-11234"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2401209"
}
],
"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-HMGP-8PGG-H7PP
Vulnerability from github – Published: 2026-04-15 21:30 – Updated: 2026-04-15 21:30Use after free in Permissions in Google Chrome on Android prior to 147.0.7727.101 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-2026-6315"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-15T20:16:41Z",
"severity": "HIGH"
},
"details": "Use after free in Permissions in Google Chrome on Android prior to 147.0.7727.101 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-hmgp-8pgg-h7pp",
"modified": "2026-04-15T21:30:19Z",
"published": "2026-04-15T21:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6315"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/499247910"
}
],
"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-HMJF-2PVF-JR4V
Vulnerability from github – Published: 2022-05-27 00:00 – Updated: 2022-06-08 00:00A flaw use after free in the Linux kernel pipes functionality was found in the way user do some manipulations with pipe ex. with the post_one_notification() after free_pipe_info() already called. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.
{
"affected": [],
"aliases": [
"CVE-2022-1882"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-05-26T17:15:00Z",
"severity": "HIGH"
},
"details": "A flaw use after free in the Linux kernel pipes functionality was found in the way user do some manipulations with pipe ex. with the post_one_notification() after free_pipe_info() already called. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.",
"id": "GHSA-hmjf-2pvf-jr4v",
"modified": "2022-06-08T00:00:57Z",
"published": "2022-05-27T00:00:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-1882"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2089701"
},
{
"type": "WEB",
"url": "https://lore.kernel.org/lkml/20220507115605.96775-1-tcs.kernel@gmail.com/T"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20220715-0002"
}
],
"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-HMM3-9XRQ-9FRC
Vulnerability from github – Published: 2026-06-05 00:31 – Updated: 2026-06-05 03:31Use after free in SurfaceCapture in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-10967"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-04T23:16:59Z",
"severity": "HIGH"
},
"details": "Use after free in SurfaceCapture in Google Chrome on Android prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-hmm3-9xrq-9frc",
"modified": "2026-06-05T03:31:32Z",
"published": "2026-06-05T00:31:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10967"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/511714900"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HMM4-5VCC-M629
Vulnerability from github – Published: 2025-07-08 15:32 – Updated: 2025-07-08 15:32Memory corruption while processing event close when client process terminates abruptly.
{
"affected": [],
"aliases": [
"CVE-2025-27050"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-07-08T13:15:32Z",
"severity": "HIGH"
},
"details": "Memory corruption while processing event close when client process terminates abruptly.",
"id": "GHSA-hmm4-5vcc-m629",
"modified": "2025-07-08T15:32:02Z",
"published": "2025-07-08T15:32:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27050"
},
{
"type": "WEB",
"url": "https://docs.qualcomm.com/product/publicresources/securitybulletin/july-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:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-HMQQ-MF9R-FRQ9
Vulnerability from github – Published: 2022-05-17 00:29 – Updated: 2022-05-17 00:29Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta.
{
"affected": [],
"aliases": [
"CVE-2015-7687"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-10-16T18:29:00Z",
"severity": "CRITICAL"
},
"details": "Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta.",
"id": "GHSA-hmqq-mf9r-frq9",
"modified": "2022-05-17T00:29:06Z",
"published": "2022-05-17T00:29:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-7687"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1268793"
},
{
"type": "WEB",
"url": "https://www.opensmtpd.org/announces/release-5.7.2.txt"
},
{
"type": "WEB",
"url": "https://www.qualys.com/2015/10/02/opensmtpd-audit-report.txt"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170448.html"
},
{
"type": "WEB",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169600.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2015/10/03/1"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/76975"
}
],
"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-HMQR-Q436-X68F
Vulnerability from github – Published: 2026-07-02 00:31 – Updated: 2026-07-02 00:31Use after free in Dawn in Google Chrome on Mac prior to 150.0.7871.46 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-14424"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-01T23:16:50Z",
"severity": "CRITICAL"
},
"details": "Use after free in Dawn in Google Chrome on Mac prior to 150.0.7871.46 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-hmqr-q436-x68f",
"modified": "2026-07-02T00:31:42Z",
"published": "2026-07-02T00:31:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14424"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/517692772"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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.