{"id":"CVE-2023-52979","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsquashfs: harden sanity check in squashfs_read_xattr_id_table\n\nWhile mounting a corrupted filesystem, a signed integer '*xattr_ids' can\nbecome less than zero.  This leads to the incorrect computation of 'len'\nand 'indexes' values which can cause null-ptr-deref in copy_bio_to_actor()\nor out-of-bounds accesses in the next sanity checks inside\nsquashfs_read_xattr_id_table().\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.","modified":"2026-01-30T00:32:12.489698Z","published":"2025-03-27T17:15:45Z","withdrawn":"2026-01-27T04:19:28.359212Z","related":["CGA-h7wh-46hc-fxvh","SUSE-SU-2025:1176-1","SUSE-SU-2025:1183-1","SUSE-SU-2025:1195-1","SUSE-SU-2025:1241-1","SUSE-SU-2025:1293-1"],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/29e774dcb27116c06b9c57b1f1f14a1623738989"},{"type":"WEB","url":"https://git.kernel.org/stable/c/72e544b1b28325fe78a4687b980871a7e4101f76"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b30a74f83265c24d1d0842c6c3928cd2e775a3fb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b7398efe24a965cf3937b716c0b1011c201c5d6e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cf5d6612092408157db6bb500c70bf6d67c40fbc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/db76fc535fbdfbf29fd0b93e49627537ad794c8c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/de2785aa3448d1ee7be3ab47fd4a873025f1b3d7"}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}