CVE-2026-64068
netfs: Fix missing locking around retry adding new subreqs
Description
In the Linux kernel, the following vulnerability has been resolved: netfs: Fix missing locking around retry adding new subreqs Fix netfs_retry_read_subrequests() and netfs_retry_write_stream() to take the appropriate lock when adding extra subrequests into stream->subrequests.
INFO
Published Date :
July 19, 2026, 4:17 p.m.
Last Modified :
Sept. 7, 2026, 4:17 p.m.
Remotely Exploit :
Yes !
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to the latest version.
- Ensure netfs module is configured correctly.
- Review kernel commit history for specific patches.
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-2026-64068.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64068 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-2026-64068
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-2026-64068 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64068 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
Sep. 07, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/64xxx/CVE-2026-64068.json">CVE-2026-64068</a> Added Reference https://git.kernel.org/stable/c/393f3f0d7353a94b1e0bc4ca89c683fe983e5fd2 Added Reference https://git.kernel.org/stable/c/cce18c263e9623872327ba3c956012f73c1179cc Added Reference https://git.kernel.org/stable/c/d5c9d19b0ff2f7153532ac238a5e96fed2df315c Removed Reference https://git.kernel.org/stable/c/393f3f0d7353a94b1e0bc4ca89c683fe983e5fd2 Removed Reference https://git.kernel.org/stable/c/cce18c263e9623872327ba3c956012f73c1179cc Removed Reference Type https://git.kernel.org/stable/c/393f3f0d7353a94b1e0bc4ca89c683fe983e5fd2 Types: Patch Removed Reference Type https://git.kernel.org/stable/c/cce18c263e9623872327ba3c956012f73c1179cc Types: Patch -
Initial Analysis by [email protected]
Sep. 03, 2026
Action Type Old Value New Value Added CWE CWE-667 Added CPE Configuration OR *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:7.1:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.10 up to (excluding) 7.0.11 Added Reference Type kernel.org: https://git.kernel.org/stable/c/393f3f0d7353a94b1e0bc4ca89c683fe983e5fd2 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cce18c263e9623872327ba3c956012f73c1179cc Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 20, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 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': '288ace2f57c9d06dd2e42bd80d03747d879a4068', 'lessThan': '393f3f0d7353a94b1e0bc4ca89c683fe983e5fd2', 'versionType': 'git'}, {'status': 'affected', 'version': '288ace2f57c9d06dd2e42bd80d03747d879a4068', 'lessThan': 'cce18c263e9623872327ba3c956012f73c1179cc', 'versionType': 'git'}], 'programFiles': ['fs/netfs/read_retry.c', 'fs/netfs/write_retry.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.0.11', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/netfs/read_retry.c', 'fs/netfs/write_retry.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: netfs: Fix missing locking around retry adding new subreqs Fix netfs_retry_read_subrequests() and netfs_retry_write_stream() to take the appropriate lock when adding extra subrequests into stream->subrequests. Added Reference https://git.kernel.org/stable/c/393f3f0d7353a94b1e0bc4ca89c683fe983e5fd2 Added Reference https://git.kernel.org/stable/c/cce18c263e9623872327ba3c956012f73c1179cc