{"id":"CVE-2026-99098","title":"dm-integrity: fix buffer overflow in inline mode with large tag size","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-integrity: fix buffer overflow in inline mode with large tag size\n\nIn inline mode, dm_integrity_check and dm_integrity_inline_recheck\ncompute the checksum of each bl…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= fb0987682c629c1d2c476f35f6fde405a5e304a4 < 3c7aad85aeb9e28386672e3a009aa2e61f751b86","Linux >= fb0987682c629c1d2c476f35f6fde405a5e304a4 < 4f0ee735dc68e3e6c4dd9a666d7f7047163c4165","Linux >= fb0987682c629c1d2c476f35f6fde405a5e304a4 < f49cd7820cd0a96f20e1aa2708adb002124e38a7","Linux >= fb0987682c629c1d2c476f35f6fde405a5e304a4 < 764b683a6180fd72c931c13fea98d383506a3475","Linux 6.11"],"published":"2026-10-26","updated":"2026-10-26","sourceUpdated":"2026-10-26T14:52:04.416Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99098","references":[{"url":"https://git.kernel.org/stable/c/3c7aad85aeb9e28386672e3a009aa2e61f751b86"},{"url":"https://git.kernel.org/stable/c/4f0ee735dc68e3e6c4dd9a666d7f7047163c4165"},{"url":"https://git.kernel.org/stable/c/f49cd7820cd0a96f20e1aa2708adb002124e38a7"},{"url":"https://git.kernel.org/stable/c/764b683a6180fd72c931c13fea98d383506a3475"}],"tags":["cve.org"],"ingestedAt":"2026-10-26T15:29:30.505Z","slug":"CVE-2026-99098","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndm-integrity: fix buffer overflow in inline mode with large tag size\n\nIn inline mode, dm_integrity_check and dm_integrity_inline_recheck\ncompute the checksum of each block into an on-stack buffer of\nHASH_MAX_DIGESTSIZE bytes. integrity_sector_checksum pads its result\nwith zeroes up to the tag size, so if the tag size is larger than\nHASH_MAX_DIGESTSIZE, the padding runs past the end of the buffer. With\nCONFIG_STACKPROTECTOR the kernel panics in dm_integrity_check on the\nfirst read.\n\nEnlarge both buffers to hold MAX_TAG_SIZE bytes, as commit b93b6643e9b5\n(\"dm integrity: fix a crash with unusually large tag size\") did for\nintegrity_metadata.\n\nNote that this is not a security bug because the buffer overflow can only\nbe triggered by root.\n\n## Affected\n\n- `Linux >= fb0987682c629c1d2c476f35f6fde405a5e304a4 < 3c7aad85aeb9e28386672e3a009aa2e61f751b86`\n- `Linux >= fb0987682c629c1d2c476f35f6fde405a5e304a4 < 4f0ee735dc68e3e6c4dd9a666d7f7047163c4165`\n- `Linux >= fb0987682c629c1d2c476f35f6fde405a5e304a4 < f49cd7820cd0a96f20e1aa2708adb002124e38a7`\n- `Linux >= fb0987682c629c1d2c476f35f6fde405a5e304a4 < 764b683a6180fd72c931c13fea98d383506a3475`\n- `Linux 6.11`\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":[]}