{"id":"CVE-2026-99098","state":"PUBLISHED","title":"dm-integrity: fix buffer overflow in inline mode with large tag size","description":"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 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.","publishedAt":"2026-10-26T14:52:04.416Z","updatedAt":"2026-10-26T14:52:04.416Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fb0987682c629c1d2c476f35f6fde405a5e304a4","status":"affected","lessThan":"3c7aad85aeb9e28386672e3a009aa2e61f751b86","versionType":"git"},{"version":"fb0987682c629c1d2c476f35f6fde405a5e304a4","status":"affected","lessThan":"4f0ee735dc68e3e6c4dd9a666d7f7047163c4165","versionType":"git"},{"version":"fb0987682c629c1d2c476f35f6fde405a5e304a4","status":"affected","lessThan":"f49cd7820cd0a96f20e1aa2708adb002124e38a7","versionType":"git"},{"version":"fb0987682c629c1d2c476f35f6fde405a5e304a4","status":"affected","lessThan":"764b683a6180fd72c931c13fea98d383506a3475","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/dm-integrity.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.11","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.11","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/dm-integrity.c"]}],"references":["https://git.kernel.org/stable/c/3c7aad85aeb9e28386672e3a009aa2e61f751b86","https://git.kernel.org/stable/c/4f0ee735dc68e3e6c4dd9a666d7f7047163c4165","https://git.kernel.org/stable/c/f49cd7820cd0a96f20e1aa2708adb002124e38a7","https://git.kernel.org/stable/c/764b683a6180fd72c931c13fea98d383506a3475"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/99xxx/CVE-2026-99098.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-99098","state":"PUBLISHED","datePublished":"2026-10-26T14:52:04.416Z","dateUpdated":"2026-10-26T14:52:04.416Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.391Z"},"containers":{"cna":{"title":"dm-integrity: fix buffer overflow in inline mode with large tag size","descriptions":[{"lang":"en","value":"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 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fb0987682c629c1d2c476f35f6fde405a5e304a4","status":"affected","lessThan":"3c7aad85aeb9e28386672e3a009aa2e61f751b86","versionType":"git"},{"version":"fb0987682c629c1d2c476f35f6fde405a5e304a4","status":"affected","lessThan":"4f0ee735dc68e3e6c4dd9a666d7f7047163c4165","versionType":"git"},{"version":"fb0987682c629c1d2c476f35f6fde405a5e304a4","status":"affected","lessThan":"f49cd7820cd0a96f20e1aa2708adb002124e38a7","versionType":"git"},{"version":"fb0987682c629c1d2c476f35f6fde405a5e304a4","status":"affected","lessThan":"764b683a6180fd72c931c13fea98d383506a3475","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/dm-integrity.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.11","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.11","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/dm-integrity.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-26T14:52:04.416Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"7.2.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}