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CVE.org (no NVD analysis yet)· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 00e93faf4cea9e8802ac5dfee0952d84fc95c40f, 2fdc51228d9a8cad2d727d5aef732cc66fc6d56e, 628b14d0744bd5dfe176ea93559071cdcde14255; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 00e93faf4cea9e8802ac5dfee0952d84fc95c40f, 2fdc51228d9a8cad2d727d5aef732cc66fc6d56e, 628b14d0744bd5dfe176ea93559071cdcde14255; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.159.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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 wraps, a newer bm_seq can look smaller than old, so .. covert to wrap-safe calculate way.

—No exploit Fix available
Published
Oct 23, 2026
Updated
Oct 26, 2026
EPSS
0.1% · 7th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.1affected
    • 2b6b24574256c05be145936f1493aec74c6904e5 and later · before 647c7289a3960118e249c0a53da6f1ebba1e47a3affected · git
    • 2b6b24574256c05be145936f1493aec74c6904e5 and later · before ffdd3aee932fc293456678f6b0200ffe9bf12a6daffected · git
    • 2b6b24574256c05be145936f1493aec74c6904e5 and later · before 628b14d0744bd5dfe176ea93559071cdcde14255affected · git
    • 2b6b24574256c05be145936f1493aec74c6904e5 and later · before 2fdc51228d9a8cad2d727d5aef732cc66fc6d56eaffected · git
    • 2b6b24574256c05be145936f1493aec74c6904e5 and later · before c5c89e1a872a84019f674f5107111e6e6b7cc30faffected · git
    • 2b6b24574256c05be145936f1493aec74c6904e5 and later · before cc8eb1715673de850f14376782151f68f73ae3ceaffected · git
    • 2b6b24574256c05be145936f1493aec74c6904e5 and later · before 00e93faf4cea9e8802ac5dfee0952d84fc95c40faffected · git
    • before 4.1not affected · semver
    • 5.10.271 and later · up to and including 5.10.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-98900Oct 23, 2026 · xen/gntalloc: validate grant count before allocation
    0Monitor
  • ← EarlierCVE-2026-98901Oct 23, 2026 · ksmbd: fix lease break and ack state handling
    0Monitor
  • Later →CVE-2026-98903Oct 23, 2026 · mailbox: imx: Add a channel shutdown field
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux00e93faf4cea9e8802ac5dfee0952d84fc95c40fVendor (CNA)
Linux Linux2fdc51228d9a8cad2d727d5aef732cc66fc6d56eVendor (CNA)
Linux Linux628b14d0744bd5dfe176ea93559071cdcde14255Vendor (CNA)
Linux Linux647c7289a3960118e249c0a53da6f1ebba1e47a3Vendor (CNA)
Linux Linuxc5c89e1a872a84019f674f5107111e6e6b7cc30fVendor (CNA)
Linux Linuxcc8eb1715673de850f14376782151f68f73ae3ceVendor (CNA)
Linux Linuxffdd3aee932fc293456678f6b0200ffe9bf12a6dVendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.159.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recordedsame day
  3. TodayOct 30, 2026+7 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Exploit maturity— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records