Bug 2555153 (CVE-2026-98727) - CVE-2026-98727 kernel: nvme-multipath: set BLK_FEAT_ZONED only after the zone info is known
Summary: CVE-2026-98727 kernel: nvme-multipath: set BLK_FEAT_ZONED only after the zone...
Keywords:
Status: NEW
Alias: CVE-2026-98727
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-18 15:57 UTC by OSIDB Bzimport
Modified: 2026-10-22 23:37 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-10-18 15:57:25 UTC
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.


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