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CVE-2026-98727

Linux: nvme-multipath: set BLK_FEAT_ZONED only after the zone info is known

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.20%Chance of exploitation activity in the next 30 days, higher than 9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in44dc998c38fb5e153c3ed5665f1112661841c3f5Also 2d86abd28071481a1abd87204a47325975dc821c, 8b85838c1fdba5ba90152693ca158aa9660c628f and 1 moreCVE List
Published18 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 44dc998c38fb5e153c3ed5665f1112661841c3f5LinuxCVE List
  • 2d86abd28071481a1abd87204a47325975dc821cLinuxCVE List
  • 8b85838c1fdba5ba90152693ca158aa9660c628fLinuxCVE List
  • 4a5e49ba0abb8b4328d6318c9aef0c0121f95507LinuxCVE 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:

nvme-multipath: set BLK_FEAT_ZONED only after the zone info is known

The namespace head is marked zoned at allocation time based only on the command set identifier. If the zone info query reports a zero zone size, the path namespace is registered without zoned limits while the head still advertises the zoned capability with a zone size of zero, and reporting zones or writing to the head then shifts by ilog2(0).

Drop the zoned feature from the head allocation and let the head limits refresh stack it in from the path namespace instead.

Text from CVE List

Affected versions 10

  • Linuxaffected: 28982ad73d6a9605708631dc49a0c763cc398aa2 before 44dc998c38fb5e153c3ed5665f1112661841c3f5CVE List
  • Linuxaffected: 28982ad73d6a9605708631dc49a0c763cc398aa2 before 2d86abd28071481a1abd87204a47325975dc821cCVE List
  • Linuxaffected: 28982ad73d6a9605708631dc49a0c763cc398aa2 before 8b85838c1fdba5ba90152693ca158aa9660c628fCVE List
  • Linuxaffected: 28982ad73d6a9605708631dc49a0c763cc398aa2 before 4a5e49ba0abb8b4328d6318c9aef0c0121f95507CVE List
  • Linuxaffected: 6.11CVE List
  • Linuxunaffected: all versions before 6.11CVE List
  • Linuxunaffected: 6.12.113 through 6.12.*CVE List
  • Linuxunaffected: 6.18.56 through 6.18.*CVE List
  • Linuxunaffected: 7.2.10 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 4