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VulnerabilityPublished Updated

CVE-2026-98902: Linux kernel · md/raid5: let stripe batch bm_seq comparison wrap-safe

Affects Linux kernelSource CVE Database V5

0

Not known to be exploited · fixed in ffdd3aee932fc293456678f6b0200ffe9bf12a6d : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity
Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in ffdd3aee932fc293456678f6b0200ffe9bf12a6d, cc8eb1715673de850f14376782151f68f73ae3ce, c5c89e1a872a84019f674f5107111e6e6b7cc30f +4

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 2b6b24574256c05be145936f1493aec74c6904e5, < ffdd3aee932fc293456678f6b0200ffe9bf12a6d
Fixed in
  • ffdd3aee932fc293456678f6b0200ffe9bf12a6d
LinuxLinuxAffected
  • ≥ 2b6b24574256c05be145936f1493aec74c6904e5, < cc8eb1715673de850f14376782151f68f73ae3ce
Fixed in
  • cc8eb1715673de850f14376782151f68f73ae3ce
LinuxLinuxAffected
  • ≥ 2b6b24574256c05be145936f1493aec74c6904e5, < c5c89e1a872a84019f674f5107111e6e6b7cc30f
Fixed in
  • c5c89e1a872a84019f674f5107111e6e6b7cc30f
LinuxLinuxAffected
  • ≥ 2b6b24574256c05be145936f1493aec74c6904e5, < 647c7289a3960118e249c0a53da6f1ebba1e47a3
Fixed in
  • 647c7289a3960118e249c0a53da6f1ebba1e47a3
LinuxLinuxAffected
  • ≥ 2b6b24574256c05be145936f1493aec74c6904e5, < 628b14d0744bd5dfe176ea93559071cdcde14255
Fixed in
  • 628b14d0744bd5dfe176ea93559071cdcde14255
LinuxLinuxAffected
  • ≥ 2b6b24574256c05be145936f1493aec74c6904e5, < 2fdc51228d9a8cad2d727d5aef732cc66fc6d56e
Fixed in
  • 2fdc51228d9a8cad2d727d5aef732cc66fc6d56e

AI-suggested

A fix is available and has been applied in multiple Linux kernel commits. Users should update to a Linux kernel version that includes these fixes to mitigate the vulnerability.

Description

A vulnerability in the Linux kernel's md/raid5 component related to the handling of 32-bit sequence numbers (bm_seq) has been resolved. The issue involved the comparison of stripe batch sequence numbers that could wrap around, causing newer sequence numbers to appear smaller than older ones. This was fixed by implementing a wrap-safe calculation method for bm_seq comparisons.

References

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