CVE-2025-39835: Linux kernel · xfs: do not propagate ENODATA disk errors into xattr code
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in e358d4b6225e4c1eb208686a05e360ef8df59e07 : patch Linux kernel soon.
Data as of 5 Nov 2026, 21:35 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- 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, 2026-11-05.
- Patch
- Available – fixed in e358d4b6225e4c1eb208686a05e360ef8df59e07, dcdf36f1b67884c722abce9b8946e34ffb9f67c8, d3cc7476b89fb45b7e00874f4f56f6b928467c60 +4
Exploitation evidence
Disclosed: evidence found.
CVE published 16 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 5 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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AI-suggested
A fix for this vulnerability has been implemented and is available in the Linux kernel versions identified by the fixed commit hashes. Users and administrators should apply these patches or upgrade to a fixed kernel version to resolve the issue. Since this is a kernel-level bug, updating the kernel is the recommended remediation. No additional mitigations are indicated or required.
Description
CVE-2025-39835 is a vulnerability in the Linux kernel's XFS filesystem code where disk errors returning ENODATA are incorrectly propagated into extended attribute (xattr) code. This can cause incorrect error reporting to userspace or a kernel oops due to null pointer dereference in xfs_attr_leaf_get(). The issue arises because ENODATA has a specific meaning in xattr code (attribute not found), but disk medium errors can also return ENODATA, leading to confusion and potential crashes. A patch has been applied to fix this by preventing disk errors from leaking as ENODATA in xattr code.
References
- git.kernel.org/stable/c/157ddfb05961c68ab7d457a462822a698e4e4bf4 (opens in a new tab)
- git.kernel.org/stable/c/90bae69c2959c39912f0c2f07a9a7894f3fc49f5 (opens in a new tab)
- git.kernel.org/stable/c/e358d4b6225e4c1eb208686a05e360ef8df59e07 (opens in a new tab)
- git.kernel.org/stable/c/d3cc7476b89fb45b7e00874f4f56f6b928467c60 (opens in a new tab)
- git.kernel.org/stable/c/dcdf36f1b67884c722abce9b8946e34ffb9f67c8 (opens in a new tab)
- git.kernel.org/stable/c/39fc2742ca14f7fbc621ce9b43bcbd00248cb9a8 (opens in a new tab)
- git.kernel.org/stable/c/ae668cd567a6a7622bc813ee0bb61c42bed61ba7 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/10/msg00007.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-032379.html (opens in a new tab)