{"id":"DEBIAN-CVE-2023-53075","details":"In the Linux kernel, the following vulnerability has been resolved:  ftrace: Fix invalid address access in lookup_rec() when index is 0  KASAN reported follow problem:   BUG: KASAN: use-after-free in lookup_rec  Read of size 8 at addr ffff000199270ff0 by task modprobe  CPU: 2 Comm: modprobe  Call trace:   kasan_report   __asan_load8   lookup_rec   ftrace_location   arch_check_ftrace_location   check_kprobe_address_safe   register_kprobe  When checking pg-\u003erecords[pg-\u003eindex - 1].ip in lookup_rec(), it can get a pg which is newly added to ftrace_pages_start in ftrace_process_locs(). Before the first pg-\u003eindex++, index is 0 and accessing pg-\u003erecords[-1].ip will cause this problem.  Don't check the ip when pg-\u003eindex is 0.","modified":"2026-09-15T09:02:50.047167119Z","published":"2025-05-02T16:15:26.510Z","upstream":["CVE-2023-53075"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-53075"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.25-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53075.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.25-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53075.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.25-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53075.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}