CVE-2026-98140
Linux: ntfs: fix kmap_local leak in write_mft_record_nolock() error paths
Linux LinuxOperating systemsCVSS
NoneNot scoredExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.14%Chance of exploitation activity in the next 30 days, higher than 3% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 5d7f7bf8fba8cf563b42b44aa4ab3d9928ac480cLinuxCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
In the Linux kernel, the following vulnerability has been resolved:
ntfs: fix kmap_local leak in write_mft_record_nolock() error paths
write_mft_record_nolock() maps the MFT record folio with kmap_local_folio(), but the pre_write_mst_fixup() and bio_add_folio() failure paths jump to the error label without unmapping it. kmap_local mappings are stack-ordered per task, so leaking one corrupts the nesting for any outer mapping.
Unmap the folio on those error paths too.
Text from CVE List
Affected versions 6
- Linuxaffected: 115380f9a2f9675c7924563cbba70d40cae8fb81 before 5d7f7bf8fba8cf563b42b44aa4ab3d9928ac480cCVE List
- Linuxaffected: 115380f9a2f9675c7924563cbba70d40cae8fb81 before cf06dcd572845723821b54a608fc2da995c3c8e2CVE List
- Linuxaffected: 7.1CVE List
- Linuxunaffected: all versions before 7.1CVE List
- Linuxunaffected: 7.2.7 through 7.2.*CVE List
- Linuxunaffected: 7.3CVE List