CVE-2026-98119: Linux kernel · netfs: break unbuffered write when netfs_alloc_subrequest() fails
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in cf6f93b8b06acf57de62dacbe71a3b99c68656a7 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 12:55 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in cf6f93b8b06acf57de62dacbe71a3b99c68656a7, 19f246c795e940dc5f11cd5bc0cb1e81bc7b7090, 8fb45a934661419c04a44d4cfea1e0df7dcf2805
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 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 cf6f93b8b06acf57de62dacbe71a3b99c68656a7, 19f246c795e940dc5f11cd5bc0cb1e81bc7b7090 or 8fb45a934661419c04a44d4cfea1e0df7dcf2805.
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– |
AI-suggested
A fix for this vulnerability is available in the Linux kernel as indicated by the fixed commit hashes. Users should update to a Linux kernel version that includes these fixes to remediate the issue.
Description
A null pointer dereference vulnerability exists in the Linux kernel's netfs subsystem. This occurs when netfs_alloc_subrequest() fails and returns NULL, but subsequent code in netfs_prepare_write() attempts to access members of this NULL pointer, leading to a crash. The issue has been fixed in specific commits.