CVE-2026-98315: Linux kernel · ntfs: protect runlist updates with the runlist lock
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 7.8 High.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation 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
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 24.04 LTSlinux-aws-6.14pkg:deb/ubuntu/linux-aws-6.14?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-aws-6.17pkg:deb/ubuntu/linux-aws-6.17?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-6.11pkg:deb/ubuntu/linux-azure-6.11?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-6.14pkg:deb/ubuntu/linux-azure-6.14?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-6.17pkg:deb/ubuntu/linux-azure-6.17?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSlinux-azure-fde-6.14pkg:deb/ubuntu/linux-azure-fde-6.14?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available that properly serializes runlist update operations with the runlist lock and improves rollback handling in the NTFS driver. Users should apply the official Linux kernel updates that include this patch to affected versions. Since this is a kernel-level vulnerability, updating the kernel to a patched version is the recommended remediation.
Description
A vulnerability in the Linux kernel's NTFS driver related to improper locking during runlist updates has been resolved. The issue involved the ntfs_non_resident_attr_shrink() function not holding the required runlist write lock while freeing clusters and truncating the runlist, potentially leading to inconsistent state. The fix serializes these operations with the runlist lock to ensure proper synchronization. Additionally, ntfs_attr_map_cluster() was updated to handle rollback correctly if mapping pair updates fail, marking the volume in error if rollback fails.
References
- ubuntu.com/security/CVE-2026-98315 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98315 (opens in a new tab)
- git.kernel.org/linus/91709ba5d6d709b2b663287b7e871e2c6b480502 (opens in a new tab)
- git.kernel.org/stable/c/742797432e8c9b0dd54ecc523c185e26b09d79a0 (opens in a new tab)
- git.kernel.org/stable/c/91709ba5d6d709b2b663287b7e871e2c6b480502 (opens in a new tab)