CVE-2026-23145: Linux kernel · ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in d250bdf531d9cd4096fedbb9f172bb2ca660c868 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 10:12 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-06-10.
- Patch
- Available – fixed in d250bdf531d9cd4096fedbb9f172bb2ca660c868, 6241cd1d0acc2363016ac55b8773ba1332dd59d7, 8e8542c539927ae3898a4d02941f84e252e2dea1 +11
Exploitation evidence
Disclosed: evidence found.
CVE published 14 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref The error branch for ext4_xattr_inode_update_ref forget to release the refcount for iloc.bh. Find this when review code.
References
- git.kernel.org/stable/c/7c9f059c3d531a12d7ad96cd34a44b8af7c00d5f (opens in a new tab)
- git.kernel.org/stable/c/6241cd1d0acc2363016ac55b8773ba1332dd59d7 (opens in a new tab)
- git.kernel.org/stable/c/3b00c16e42428a1ecd3a5eb9cc37f8ad9bd47626 (opens in a new tab)
- git.kernel.org/stable/c/0b06cde92f2f960f4ebe3c988c69f2711f2a24dc (opens in a new tab)
- git.kernel.org/stable/c/8e8542c539927ae3898a4d02941f84e252e2dea1 (opens in a new tab)
- git.kernel.org/stable/c/06e26287f2e349a28ad363941ffd9076bfed8b2e (opens in a new tab)
- git.kernel.org/stable/c/d250bdf531d9cd4096fedbb9f172bb2ca660c868 (opens in a new tab)