CVE-2026-98267: Linux kernel · 9p: Fix v9fs_issue_write() to update i_size and remote_i_size
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in c60ae98c5aa64021751b38ab1313b19d620bf640 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 13:47 UTC
Rated Low by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in c60ae98c5aa64021751b38ab1313b19d620bf640, aeb1fe55583836744aef11fbfa2a09122aa9816c, 88871ab548c1d7b11cde9b04063f3c1c6fbd7039 +1
Exploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 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 Linux kernel to c60ae98c5aa64021751b38ab1313b19d620bf640, aeb1fe55583836744aef11fbfa2a09122aa9816c, 88871ab548c1d7b11cde9b04063f3c1c6fbd7039 or 9cd92e3392bdd14568e9e44aec1ac05e1fcd62e5.
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– |
AI-suggested
A fix is available and has been applied in the Linux kernel commits identified by hashes c60ae98c5aa64021751b38ab1313b19d620bf640, aeb1fe55583836744aef11fbfa2a09122aa9816c, 88871ab548c1d7b11cde9b04063f3c1c6fbd7039, and 9cd92e3392bdd14568e9e44aec1ac05e1fcd62e5. Users should update to a Linux kernel version including these commits to remediate the issue.
Description
A vulnerability in the Linux kernel's 9p filesystem implementation (v9fs_issue_write) was fixed to correctly update file size metadata (i_size and remote_i_size) after write operations that enlarge a file. The fix ensures that when the 9P server returns a reduced write count (e.g., due to ENOSPC), the file size is accurately updated to reflect the new minimum size.
References
- git.kernel.org/stable/c/aeb1fe55583836744aef11fbfa2a09122aa9816c (opens in a new tab)
- git.kernel.org/stable/c/88871ab548c1d7b11cde9b04063f3c1c6fbd7039 (opens in a new tab)
- git.kernel.org/stable/c/9cd92e3392bdd14568e9e44aec1ac05e1fcd62e5 (opens in a new tab)
- git.kernel.org/stable/c/c60ae98c5aa64021751b38ab1313b19d620bf640 (opens in a new tab)