Skip to main content
VulnerabilityPublished Updated

CVE-2026-23465: Linux kernel · btrfs: log new dentries when logging parent dir of a conflicting inode

Affects Linux kernelSource CVE Database V5

0
Compare

Not known to be exploited · fixed in f556b1e09d054e31f464c0fd37280c2b5a393fee : patch Linux kernel soon.

Data as of 30 Oct 2026, 12:48 UTC

Severity
High

Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
Patch
Available – fixed in f556b1e09d054e31f464c0fd37280c2b5a393fee, 9573a365ff9ff45da9222d3fe63695ce562beb24, 56e72c8b02d982be775d9df025357c152383ee84 +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ a3baaf0d786e22fc86295fda9c58ba0dee07599f, < f556b1e09d054e31f464c0fd37280c2b5a393fee
Fixed in
  • f556b1e09d054e31f464c0fd37280c2b5a393fee
LinuxLinuxAffected
  • ≥ a3baaf0d786e22fc86295fda9c58ba0dee07599f, < 9573a365ff9ff45da9222d3fe63695ce562beb24
Fixed in
  • 9573a365ff9ff45da9222d3fe63695ce562beb24
LinuxLinuxAffected
  • ≥ a3baaf0d786e22fc86295fda9c58ba0dee07599f, < 56e72c8b02d982be775d9df025357c152383ee84
Fixed in
  • 56e72c8b02d982be775d9df025357c152383ee84
LinuxLinuxAffected
  • ≥ a3baaf0d786e22fc86295fda9c58ba0dee07599f, < 6f5a51969b1deb79aefd2194b48fe7e78e72ff7e
Fixed in
  • 6f5a51969b1deb79aefd2194b48fe7e78e72ff7e
LinuxLinuxAffected
  • ≥ a3baaf0d786e22fc86295fda9c58ba0dee07599f, < 6c23595c54cfeb878e3fbbb8eb08bc5061d0c2d4
Fixed in
  • 6c23595c54cfeb878e3fbbb8eb08bc5061d0c2d4
LinuxLinuxAffected
  • ≥ a3baaf0d786e22fc86295fda9c58ba0dee07599f, < 1cf30c73602c69d750c9345c47f2c0e9d0cfb578
Fixed in
  • 1cf30c73602c69d750c9345c47f2c0e9d0cfb578

AI-suggested

A fix is available in the Linux kernel as indicated by the presence of multiple fixed commit versions. Users should update their Linux kernel to a version that includes these fixes to prevent data loss related to this issue.

Description

A vulnerability in the Linux kernel's btrfs filesystem logging mechanism causes new directory entries (dentries) to not be logged when logging the parent directory of a conflicting inode. This can lead to missing directory entries after a power failure and log replay, resulting in data loss for those entries.

References

Community reviews

Loading reviews…