CVE-2026-53361
af_unix: Set gc_in_progress to true in unix_gc().
Description
In the Linux kernel, the following vulnerability has been resolved: af_unix: Set gc_in_progress to true in unix_gc(). Igor Ushakov reported that unix_gc() could run with gc_in_progress being false if the work is scheduled while running: Thread 1 Thread 2 Thread 3 -------- -------- -------- unix_schedule_gc() unix_schedule_gc() `- if (!gc_in_progress) `- if (!gc_in_progress) |- gc_in_progress = true | `- queue_work() | unix_gc() <----------------/ | | |- gc_in_progress = true ... `- queue_work() | | `- gc_in_progress = false | | unix_gc() <---------------------------------------------' | ... /* gc_in_progress == false */ | `- gc_in_progress = false unix_peek_fpl() relies on gc_in_progress not to confuse GC by MSG_PEEK. Let's set gc_in_progress to true in unix_gc().
INFO
Published Date :
July 4, 2026, 12:17 p.m.
Last Modified :
July 22, 2026, 7:07 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Apply the patch for unix_gc() race condition.
- Update the Linux kernel to the fixed version.
- Verify the fix by testing unix_gc() functionality.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53361.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53361 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53361
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53361 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53361 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Jul. 22, 2026
Action Type Old Value New Value Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1.141 up to (excluding) 6.2 *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.9 up to (excluding) 6.12.95 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.38 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.1 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.6.93 up to (excluding) 6.6.144 Added Reference Type kernel.org: https://git.kernel.org/stable/c/0cfa78c050662784fc8e3ab26dbfd1dc632b2082 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/591f1ac217428a6d2b32a8ac14aac0fab44f155a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/82c17e13d404f686e164590483fd6c1abaa675d0 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d82ba05263c69fa2437fe93e4e561cc40f4c03af Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 18, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 04, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '328840c93bd6a4871dd10908d01b41eab83eb8e2', 'lessThan': '82c17e13d404f686e164590483fd6c1abaa675d0', 'versionType': 'git'}, {'status': 'affected', 'version': '8b90a9f819dc2a06baae4ec1a64d875e53b824ec', 'lessThan': '591f1ac217428a6d2b32a8ac14aac0fab44f155a', 'versionType': 'git'}, {'status': 'affected', 'version': '8b90a9f819dc2a06baae4ec1a64d875e53b824ec', 'lessThan': '0cfa78c050662784fc8e3ab26dbfd1dc632b2082', 'versionType': 'git'}, {'status': 'affected', 'version': '8b90a9f819dc2a06baae4ec1a64d875e53b824ec', 'lessThan': 'd82ba05263c69fa2437fe93e4e561cc40f4c03af', 'versionType': 'git'}, {'status': 'affected', 'version': 'ceb8bd6c69c1680fd9b45e7f16d7170c9c7513a5', 'versionType': 'git'}, {'status': 'affected', 'version': '6.6.93', 'lessThan': '6.6.144', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.1.141', 'lessThan': '6.2', 'versionType': 'semver'}], 'programFiles': ['net/unix/garbage.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.9'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.9', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.144', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.95', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.38', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/unix/garbage.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: af_unix: Set gc_in_progress to true in unix_gc(). Igor Ushakov reported that unix_gc() could run with gc_in_progress being false if the work is scheduled while running: Thread 1 Thread 2 Thread 3 -------- -------- -------- unix_schedule_gc() unix_schedule_gc() `- if (!gc_in_progress) `- if (!gc_in_progress) |- gc_in_progress = true | `- queue_work() | unix_gc() <----------------/ | | |- gc_in_progress = true ... `- queue_work() | | `- gc_in_progress = false | | unix_gc() <---------------------------------------------' | ... /* gc_in_progress == false */ | `- gc_in_progress = false unix_peek_fpl() relies on gc_in_progress not to confuse GC by MSG_PEEK. Let's set gc_in_progress to true in unix_gc(). Added Reference https://git.kernel.org/stable/c/0cfa78c050662784fc8e3ab26dbfd1dc632b2082 Added Reference https://git.kernel.org/stable/c/591f1ac217428a6d2b32a8ac14aac0fab44f155a Added Reference https://git.kernel.org/stable/c/82c17e13d404f686e164590483fd6c1abaa675d0 Added Reference https://git.kernel.org/stable/c/d82ba05263c69fa2437fe93e4e561cc40f4c03af