{"id":"CVE-2026-23388","summary":"Squashfs: check metadata block offset is within range","details":"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.","modified":"2026-04-14T03:47:26.774344Z","published":"2026-03-25T10:28:06.224Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23388.json","cna_assigner":"Linux"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/01ee0bcc29864b78249308e8b35042b09bbf5fe3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0c8ab092aec3ac4294940054772d30b511b16713"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3b9499e7d677dd4366239a292238489a804936b2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6b847d65f5b0065e02080c61fad93d57d6686383"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fdb24a820a5832ec4532273282cbd4f22c291a0d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23388.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23388"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f400e12656ab518be107febfe2315fb1eab5a342"},{"fixed":"0c8ab092aec3ac4294940054772d30b511b16713"},{"fixed":"6b847d65f5b0065e02080c61fad93d57d6686383"},{"fixed":"9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c"},{"fixed":"01ee0bcc29864b78249308e8b35042b09bbf5fe3"},{"fixed":"3b9499e7d677dd4366239a292238489a804936b2"},{"fixed":"fdb24a820a5832ec4532273282cbd4f22c291a0d"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23388.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.29"},{"fixed":"6.1.167"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.130"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.77"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.17"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.7"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23388.json"}}],"schema_version":"1.7.5"}