{"id":"CVE-2026-23388","title":"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 in…","summary":"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 in…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","cwe":["CWE-125"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 2.6.29.1, < 5.10.253","linux_kernel >= 5.11, < 5.15.203","linux_kernel >= 5.16, < 6.1.167","linux_kernel >= 6.2, < 6.6.130","linux_kernel >= 6.7, < 6.12.77","linux_kernel >= 6.13, < 6.18.17","linux_kernel >= 6.19, < 6.19.7","linux_kernel = 2.6.29","linux_kernel = 7.0"],"patched":["linux_kernel 6.19.7"],"published":"2026-03-25","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:18:53.917","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-23388","references":[{"url":"https://git.kernel.org/stable/c/01ee0bcc29864b78249308e8b35042b09bbf5fe3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/0c8ab092aec3ac4294940054772d30b511b16713","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3b9499e7d677dd4366239a292238489a804936b2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3f68a9457a6190814377577374da75f872e0a013","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/60f679f643f3f36a8571ea585e4ce5d93ef952b5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6b847d65f5b0065e02080c61fad93d57d6686383","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fdb24a820a5832ec4532273282cbd4f22c291a0d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00119,"epssPercentile":0.01666,"ingestedAt":"2026-10-15T03:30:12.847Z","slug":"CVE-2026-23388","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `linux_kernel >= 2.6.29.1, < 5.10.253`\n- `linux_kernel >= 5.11, < 5.15.203`\n- `linux_kernel >= 5.16, < 6.1.167`\n- `linux_kernel >= 6.2, < 6.6.130`\n- `linux_kernel >= 6.7, < 6.12.77`\n- `linux_kernel >= 6.13, < 6.18.17`\n- `linux_kernel >= 6.19, < 6.19.7`\n- `linux_kernel = 2.6.29`\n- `linux_kernel = 7.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.19.7`","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}