CVE-2026-98118: Linux kernel · netfs: Fix readahead synchronisation issues by loading all folios upfront
Affects Linux kernelSource CVE Database V5
Not known to be exploited : upgrade to fed0b33e6c584986ba70018ec9f9787a98216e64 or 8c9b33945712074a85d3bdacbca036ba6b3d92c6 when convenient.
Data as of 26 Oct 2026, 14:05 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 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in fed0b33e6c584986ba70018ec9f9787a98216e64, 8c9b33945712074a85d3bdacbca036ba6b3d92c6
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 fed0b33e6c584986ba70018ec9f9787a98216e64 or 8c9b33945712074a85d3bdacbca036ba6b3d92c6.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available and has been applied in the Linux kernel commits identified by hashes fed0b33e6c584986ba70018ec9f9787a98216e64 and 8c9b33945712074a85d3bdacbca036ba6b3d92c6. Users should update to the patched Linux kernel version 6.12 or later containing these commits to remediate the vulnerability.
Description
CVE-2026-98118 addresses synchronization issues in the Linux kernel's netfs readahead mechanism. The vulnerability stems from concurrent access conflicts between application and collector threads manipulating folios in a rolling buffer. The fix involves loading all folios upfront into the buffer before dropping references, simplifying buffer handling and preventing race conditions.