Riskcovery

CVE-2026-99087

dm-integrity: fix NULL pointer dereference when the 'R' flag is used

State
Published
Severity
Not scored
Published
Oct 23, 2026
Updated
Oct 23, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 468dfca38b1a6fbdccd195d875599cb7c8875cd9 to before 2e25842f0e4423e0efb243f56153d842ed6b933fAffected
  • 468dfca38b1a6fbdccd195d875599cb7c8875cd9 to before 69ed43ed8a174465fca1ba6bfbde53e4618c8956Affected
  • 468dfca38b1a6fbdccd195d875599cb7c8875cd9 to before 7d4d4f3b668d708d94f62ecdd33ac330a6fd8a84Affected
LinuxLinux
  • 5.2Affected
  • before 5.2Not affected
  • 6.18.58 through 6.18.*Not affected
  • 7.2.12 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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