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CVE-2026-99087

Unknown

Last modified

CVE-2026-99087 is a vulnerability of currently unknown severity. 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..

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 468dfca38b1a6fbdccd195d875599cb7c8875cd9, < 2e25842f0e4423e0efb243f56153d842ed6b933f; >= 468dfca38b1a6fbdccd195d875599cb7c8875cd9, < 69ed43ed8a174465fca1ba6bfbde53e4618c8956; >= 468dfca38b1a6fbdccd195d875599cb7c8875cd9, < 7d4d4f3b668d708d94f62ecdd33ac330a6fd8a84
LinuxLinux5.2

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-99087?
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.
How severe is CVE-2026-99087?
Severity scoring for CVE-2026-99087 is pending analysis.
How do I fix CVE-2026-99087?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST