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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-99087

dm-integrity: fix NULL pointer dereference when the 'R' flag is usedCVE-2026-99087

Answer in brief

CVE-2026-99087 records a Unknown severity vulnerability in dm-integrity: fix NULL pointer dereference when the 'R' flag is used. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 23, 2026Updated Oct 23, 2026Source checked Oct 25, 2026First seen by HOL Oct 23, 2026Material review Oct 23, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=468dfca38b1a6fbdccd195d875599cb7c8875cd9 <2e25842f0e4423e0efb243f56153d842ed6b933f || >=468dfca38b1a6fbdccd195d875599cb7c8875cd9 <69ed43ed8a174465fca1ba6bfbde53e4618c8956 || >=468dfca38b1a6fbdccd195d875599cb7c8875cd9 <7d4d4f3b668d708d94f62ecdd33ac330a6fd8a842e25842f0e4423e0efb243f56153d842ed6b933f, 69ed43ed8a174465fca1ba6bfbde53e4618c8956, 7d4d4f3b668d708d94f62ecdd33ac330a6fd8a84
Linux/Linuxgeneric5.2Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 2e25842f0e4423e0efb243f56153d842ed6b933f if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 23, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: dm-integrity: fix NULL pointer dereference when the 'R' flag is used If the dm-integrity device has the SB_FLAG_DIRTY_BITMAP flag set and the user activates the device in the 'R' mode, a crash in dm_integrity_resume happens because the function attempts to read the journal containing the bitmap. This patch makes dm-integrity skip any writes to the device in dm_integrity_resume if the device is activated in the 'R' mode.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 25, 2026
References
3 linked sources
Open source record