CVE-2026-43273

A flaw was found in the Linux kernel's Ceph file system module. The ceph_zero_partial_object function, responsible for handling object write operations, was missing proper snapshot context. This oversight could allow a local attacker to cause data inconsistencies within snapshots, leading to a loss of data integrity for previously snapshotted data.

Red Hat acknowledges the upstream Linux kernel correction for «ceph» as described in COMMENT_ZERO. Fixes are delivered through standard kernel errata for supported products. Operational exposure depends on whether this subsystem or driver is active in your configuration.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, prevent the ceph module from being loaded. See https://access.redhat.com/solutions/41278 for instructions.