{"id":"CVE-2026-23388","state":"PUBLISHED","title":"Squashfs: check metadata block offset is within range","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nSquashfs: check metadata block offset is within range\n\nSyzkaller reports a \"general protection fault in squashfs_copy_data\"\n\nThis is ultimately caused by a corrupted index look-up table, which\nproduces a negative metadata block offset.\n\nThis is subsequently passed to squashfs_copy_data (via\nsquashfs_read_metadata) where the negative offset causes an out of bounds\naccess.\n\nThe fix is to check that the offset is within range in\nsquashfs_read_metadata.  This will trap this and other cases.","publishedAt":"2026-03-25T10:28:06.224Z","updatedAt":"2026-10-15T01:14:38.860Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"60f679f643f3f36a8571ea585e4ce5d93ef952b5","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"3f68a9457a6190814377577374da75f872e0a013","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"0c8ab092aec3ac4294940054772d30b511b16713","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"6b847d65f5b0065e02080c61fad93d57d6686383","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"01ee0bcc29864b78249308e8b35042b09bbf5fe3","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"3b9499e7d677dd4366239a292238489a804936b2","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"fdb24a820a5832ec4532273282cbd4f22c291a0d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/squashfs/cache.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.29","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.29","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.167","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.77","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.17","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.7","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/squashfs/cache.c"]}],"references":["https://git.kernel.org/stable/c/60f679f643f3f36a8571ea585e4ce5d93ef952b5","https://git.kernel.org/stable/c/3f68a9457a6190814377577374da75f872e0a013","https://git.kernel.org/stable/c/0c8ab092aec3ac4294940054772d30b511b16713","https://git.kernel.org/stable/c/6b847d65f5b0065e02080c61fad93d57d6686383","https://git.kernel.org/stable/c/9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c","https://git.kernel.org/stable/c/01ee0bcc29864b78249308e8b35042b09bbf5fe3","https://git.kernel.org/stable/c/3b9499e7d677dd4366239a292238489a804936b2","https://git.kernel.org/stable/c/fdb24a820a5832ec4532273282cbd4f22c291a0d","https://cert-portal.siemens.com/productcert/html/ssa-784472.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23388.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23388","state":"PUBLISHED","datePublished":"2026-03-25T10:28:06.224Z","dateUpdated":"2026-10-15T01:14:38.860Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-13T15:37:46.008Z"},"containers":{"cna":{"title":"Squashfs: check metadata block offset is within range","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nSquashfs: check metadata block offset is within range\n\nSyzkaller reports a \"general protection fault in squashfs_copy_data\"\n\nThis is ultimately caused by a corrupted index look-up table, which\nproduces a negative metadata block offset.\n\nThis is subsequently passed to squashfs_copy_data (via\nsquashfs_read_metadata) where the negative offset causes an out of bounds\naccess.\n\nThe fix is to check that the offset is within range in\nsquashfs_read_metadata.  This will trap this and other cases."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"60f679f643f3f36a8571ea585e4ce5d93ef952b5","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"3f68a9457a6190814377577374da75f872e0a013","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"0c8ab092aec3ac4294940054772d30b511b16713","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"6b847d65f5b0065e02080c61fad93d57d6686383","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"01ee0bcc29864b78249308e8b35042b09bbf5fe3","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"3b9499e7d677dd4366239a292238489a804936b2","versionType":"git"},{"version":"f400e12656ab518be107febfe2315fb1eab5a342","status":"affected","lessThan":"fdb24a820a5832ec4532273282cbd4f22c291a0d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/squashfs/cache.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.29","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.29","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.167","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.77","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.17","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.7","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/squashfs/cache.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/60f679f643f3f36a8571ea585e4ce5d93ef952b5"},{"url":"https://git.kernel.org/stable/c/3f68a9457a6190814377577374da75f872e0a013"},{"url":"https://git.kernel.org/stable/c/0c8ab092aec3ac4294940054772d30b511b16713"},{"url":"https://git.kernel.org/stable/c/6b847d65f5b0065e02080c61fad93d57d6686383"},{"url":"https://git.kernel.org/stable/c/9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c"},{"url":"https://git.kernel.org/stable/c/01ee0bcc29864b78249308e8b35042b09bbf5fe3"},{"url":"https://git.kernel.org/stable/c/3b9499e7d677dd4366239a292238489a804936b2"},{"url":"https://git.kernel.org/stable/c/fdb24a820a5832ec4532273282cbd4f22c291a0d"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:05:54.748Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.1.167"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.6.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.12.77"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.18.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.19.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - 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