CVE-2026-64260
fuse-uring: Avoid queue->stopped races and set/read that value under lock
Description
In the Linux kernel, the following vulnerability has been resolved: fuse-uring: Avoid queue->stopped races and set/read that value under lock There are several readers of queue->stopped that check the value under lock, but fuse_uring_commit_fetch() did not and actually the value was not set under the lock in fuse_uring_abort_end_requests() either. Especially in fuse_uring_commit_fetch it is important to check under a lock, because due to races 'struct fuse_req' might be freed with fuse_request_end, but another thread/cpu might already do teardown work.
INFO
Published Date :
July 25, 2026, 10:17 a.m.
Last Modified :
Aug. 17, 2026, 5:17 a.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
- Update the Linux kernel to the latest version.
- Apply the patch for fuse-uring race condition.
- Verify the fix has been applied.
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-2026-64260.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64260 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-2026-64260
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-2026-64260 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64260 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.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4a9bfb9b6850fec0685447aed280533cf980de70', 'lessThan': '39c8e925b207afceffaa5382416ed405e0223a03', 'versionType': 'git'}, {'status': 'affected', 'version': '4a9bfb9b6850fec0685447aed280533cf980de70', 'lessThan': '4021a3a79eee551d95fe1e1e7c1b195d34ba8c08', 'versionType': 'git'}, {'status': 'affected', 'version': '4a9bfb9b6850fec0685447aed280533cf980de70', 'lessThan': 'b70a3aca16934c196f92abb17b01c1647b9bb63c', 'versionType': 'git'}], 'programFiles': ['fs/fuse/dev_uring.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/fuse/dev_uring.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4a9bfb9b6850fec0685447aed280533cf980de70', 'lessThan': '39c8e925b207afceffaa5382416ed405e0223a03', 'versionType': 'git'}, {'status': 'affected', 'version': '4a9bfb9b6850fec0685447aed280533cf980de70', 'lessThan': '4021a3a79eee551d95fe1e1e7c1b195d34ba8c08', 'versionType': 'git'}, {'status': 'affected', 'version': '4a9bfb9b6850fec0685447aed280533cf980de70', 'lessThan': 'b70a3aca16934c196f92abb17b01c1647b9bb63c', 'versionType': 'git'}], 'programFiles': ['fs/fuse/dev_uring.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/fuse/dev_uring.c'], 'defaultStatus': 'affected'}] -
Initial Analysis by [email protected]
Aug. 12, 2026
Action Type Old Value New Value Added CWE CWE-362 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.1.4 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.14 up to (excluding) 6.18.39 Added Reference Type kernel.org: https://git.kernel.org/stable/c/39c8e925b207afceffaa5382416ed405e0223a03 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4021a3a79eee551d95fe1e1e7c1b195d34ba8c08 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b70a3aca16934c196f92abb17b01c1647b9bb63c Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 27, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 25, 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': '4a9bfb9b6850fec0685447aed280533cf980de70', 'lessThan': '39c8e925b207afceffaa5382416ed405e0223a03', 'versionType': 'git'}, {'status': 'affected', 'version': '4a9bfb9b6850fec0685447aed280533cf980de70', 'lessThan': '4021a3a79eee551d95fe1e1e7c1b195d34ba8c08', 'versionType': 'git'}, {'status': 'affected', 'version': '4a9bfb9b6850fec0685447aed280533cf980de70', 'lessThan': 'b70a3aca16934c196f92abb17b01c1647b9bb63c', 'versionType': 'git'}], 'programFiles': ['fs/fuse/dev_uring.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.39', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/fuse/dev_uring.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: fuse-uring: Avoid queue->stopped races and set/read that value under lock There are several readers of queue->stopped that check the value under lock, but fuse_uring_commit_fetch() did not and actually the value was not set under the lock in fuse_uring_abort_end_requests() either. Especially in fuse_uring_commit_fetch it is important to check under a lock, because due to races 'struct fuse_req' might be freed with fuse_request_end, but another thread/cpu might already do teardown work. Added Reference https://git.kernel.org/stable/c/39c8e925b207afceffaa5382416ed405e0223a03 Added Reference https://git.kernel.org/stable/c/4021a3a79eee551d95fe1e1e7c1b195d34ba8c08 Added Reference https://git.kernel.org/stable/c/b70a3aca16934c196f92abb17b01c1647b9bb63c