{"id":"CVE-2023-53075","summary":"ftrace: Fix invalid address access in lookup_rec() when index is 0","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nftrace: Fix invalid address access in lookup_rec() when index is 0\n\nKASAN reported follow problem:\n\n BUG: KASAN: use-after-free in lookup_rec\n Read of size 8 at addr ffff000199270ff0 by task modprobe\n CPU: 2 Comm: modprobe\n Call trace:\n  kasan_report\n  __asan_load8\n  lookup_rec\n  ftrace_location\n  arch_check_ftrace_location\n  check_kprobe_address_safe\n  register_kprobe\n\nWhen checking pg-\u003erecords[pg-\u003eindex - 1].ip in lookup_rec(), it can get a\npg which is newly added to ftrace_pages_start in ftrace_process_locs().\nBefore the first pg-\u003eindex++, index is 0 and accessing pg-\u003erecords[-1].ip\nwill cause this problem.\n\nDon't check the ip when pg-\u003eindex is 0.","modified":"2026-04-03T13:14:38.554504041Z","published":"2025-05-02T15:55:26.023Z","related":["SUSE-SU-2025:01918-1","SUSE-SU-2025:01966-1","SUSE-SU-2025:01983-1","SUSE-SU-2025:02173-1","SUSE-SU-2025:02262-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53075.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2a0d71fabfeb349216d33f001a6421b1768bd3a9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2de28e5ce34b22b73b833a21e2c45ae3aade3964"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4f84f31f63416b0f02fc146ffdc4ab32723eb7e8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7569ee04b0e3b32df79f64db3a7138573edad9bc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/83c3b2f4e7c61367c7b24551f4c6eb94bbdda283"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ac58b88ccbbb8e9fb83e137cee04a856b1ea6635"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ee92fa443358f4fc0017c1d0d325c27b37802504"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f1bd8b7fd890d87d0dc4dedc6287ea34dd07c0b4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53075.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53075"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"9644302e3315e7e36495d230d5ac7125a316d33e"},{"fixed":"2de28e5ce34b22b73b833a21e2c45ae3aade3964"},{"fixed":"7569ee04b0e3b32df79f64db3a7138573edad9bc"},{"fixed":"ac58b88ccbbb8e9fb83e137cee04a856b1ea6635"},{"fixed":"83c3b2f4e7c61367c7b24551f4c6eb94bbdda283"},{"fixed":"2a0d71fabfeb349216d33f001a6421b1768bd3a9"},{"fixed":"4f84f31f63416b0f02fc146ffdc4ab32723eb7e8"},{"fixed":"f1bd8b7fd890d87d0dc4dedc6287ea34dd07c0b4"},{"fixed":"ee92fa443358f4fc0017c1d0d325c27b37802504"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53075.json"}}],"schema_version":"1.7.5"}