CVE-2026-98727 PUBLISHED

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

Assigner: Linux
Reserved: 25.09.2026 Published: 18.10.2026 Updated: 18.10.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 28982ad73d6a9605708631dc49a0c763cc398aa2 to 44dc998c38fb5e153c3ed5665f1112661841c3f5 (excl.)
  • affected from 28982ad73d6a9605708631dc49a0c763cc398aa2 to 2d86abd28071481a1abd87204a47325975dc821c (excl.)
  • affected from 28982ad73d6a9605708631dc49a0c763cc398aa2 to 8b85838c1fdba5ba90152693ca158aa9660c628f (excl.)
  • affected from 28982ad73d6a9605708631dc49a0c763cc398aa2 to 4a5e49ba0abb8b4328d6318c9aef0c0121f95507 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.11 is affected
  • unaffected from 0 to 6.11 (excl.)
  • unaffected from 6.12.113 to 6.12.* (incl.)
  • unaffected from 6.18.56 to 6.18.* (incl.)
  • unaffected from 7.2.10 to 7.2.* (incl.)
  • unaffected from 7.3-rc6 to * (incl.)

References