{"id":"CVE-2026-99087","title":"dm-integrity: fix NULL pointer dereference when the 'R' flag is used","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-integrity: fix NULL pointer dereference when the 'R' flag is used\n\nIf the dm-integrity device has the SB_FLAG_DIRTY_BITMAP flag set and the\nuser activates the device…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 468dfca38b1a6fbdccd195d875599cb7c8875cd9 < 2e25842f0e4423e0efb243f56153d842ed6b933f","Linux >= 468dfca38b1a6fbdccd195d875599cb7c8875cd9 < 69ed43ed8a174465fca1ba6bfbde53e4618c8956","Linux >= 468dfca38b1a6fbdccd195d875599cb7c8875cd9 < 7d4d4f3b668d708d94f62ecdd33ac330a6fd8a84","Linux 5.2"],"published":"2026-10-23","updated":"2026-10-23","sourceUpdated":"2026-10-23T12:45:05.714Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99087","references":[{"url":"https://git.kernel.org/stable/c/2e25842f0e4423e0efb243f56153d842ed6b933f"},{"url":"https://git.kernel.org/stable/c/69ed43ed8a174465fca1ba6bfbde53e4618c8956"},{"url":"https://git.kernel.org/stable/c/7d4d4f3b668d708d94f62ecdd33ac330a6fd8a84"}],"tags":["cve.org"],"ingestedAt":"2026-10-23T13:24:55.507Z","slug":"CVE-2026-99087","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndm-integrity: fix NULL pointer dereference when the 'R' flag is used\n\nIf the dm-integrity device has the SB_FLAG_DIRTY_BITMAP flag set and the\nuser activates the device in the 'R' mode, a crash in dm_integrity_resume\nhappens because the function attempts to read the journal containing the\nbitmap.\n\nThis patch makes dm-integrity skip any writes to the device in\ndm_integrity_resume if the device is activated in the 'R' mode.\n\n## Affected\n\n- `Linux >= 468dfca38b1a6fbdccd195d875599cb7c8875cd9 < 2e25842f0e4423e0efb243f56153d842ed6b933f`\n- `Linux >= 468dfca38b1a6fbdccd195d875599cb7c8875cd9 < 69ed43ed8a174465fca1ba6bfbde53e4618c8956`\n- `Linux >= 468dfca38b1a6fbdccd195d875599cb7c8875cd9 < 7d4d4f3b668d708d94f62ecdd33ac330a6fd8a84`\n- `Linux 5.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}