In the Linux kernel, the following vulnerability has been resolved: md/raid5: let stripe batch bm_seq comparison wrap-safe Once the 32-bit seq… (CVE-2026-98902)

The Linux kernel md/raid5 subsystem had a vulnerability where the 32-bit bm_seq sequence number comparison was not wrap-safe. When the sequence number wrapped around its 32-bit limit, the comparison could incorrectly treat newer sequence numbers as smaller than older ones, potentially causing logic errors in RAID5 stripe batch processing. The fix involved converting the comparison to a wrap-safe calculation method to handle sequence number wraparound correctly.

The vulnerability could lead to incorrect RAID5 stripe batch processing due to misinterpretation of sequence numbers after wraparound. This may affect data integrity or RAID operation correctness. No specific exploitation details or active exploits are reported.

A fix has been applied in the Linux kernel to address this issue by making the bm_seq comparison wrap-safe. Users should update to the fixed kernel version once available. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor advisory for current remediation guidance.