{"id":"DEBIAN-CVE-2023-53375","details":"In the Linux kernel, the following vulnerability has been resolved:  tracing: Free error logs of tracing instances  When a tracing instance is removed, the error messages that hold errors that occurred in the instance needs to be freed. The following reports a memory leak:   # cd /sys/kernel/tracing  # mkdir instances/foo  # echo 'hist:keys=x' \u003e instances/foo/events/sched/sched_switch/trigger  # cat instances/foo/error_log  [  117.404795] hist:sched:sched_switch: error: Couldn't find field    Command: hist:keys=x                       ^  # rmdir instances/foo  Then check for memory leaks:   # echo scan \u003e /sys/kernel/debug/kmemleak  # cat /sys/kernel/debug/kmemleak unreferenced object 0xffff88810d8ec700 (size 192):   comm \"bash\", pid 869, jiffies 4294950577 (age 215.752s)   hex dump (first 32 bytes):     60 dd 68 61 81 88 ff ff 60 dd 68 61 81 88 ff ff  `.ha....`.ha....     a0 30 8c 83 ff ff ff ff 26 00 0a 00 00 00 00 00  .0......&.......   backtrace:     [\u003c00000000dae26536\u003e] kmalloc_trace+0x2a/0xa0     [\u003c00000000b2938940\u003e] tracing_log_err+0x277/0x2e0     [\u003c000000004a0e1b07\u003e] parse_atom+0x966/0xb40     [\u003c0000000023b24337\u003e] parse_expr+0x5f3/0xdb0     [\u003c00000000594ad074\u003e] event_hist_trigger_parse+0x27f8/0x3560     [\u003c00000000293a9645\u003e] trigger_process_regex+0x135/0x1a0     [\u003c000000005c22b4f2\u003e] event_trigger_write+0x87/0xf0     [\u003c000000002cadc509\u003e] vfs_write+0x162/0x670     [\u003c0000000059c3b9be\u003e] ksys_write+0xca/0x170     [\u003c00000000f1cddc00\u003e] do_syscall_64+0x3e/0xc0     [\u003c00000000868ac68c\u003e] entry_SYSCALL_64_after_hwframe+0x72/0xdc unreferenced object 0xffff888170c35a00 (size 32):   comm \"bash\", pid 869, jiffies 4294950577 (age 215.752s)   hex dump (first 32 bytes):     0a 20 20 43 6f 6d 6d 61 6e 64 3a 20 68 69 73 74  .  Command: hist     3a 6b 65 79 73 3d 78 0a 00 00 00 00 00 00 00 00  :keys=x.........   backtrace:     [\u003c000000006a747de5\u003e] __kmalloc+0x4d/0x160     [\u003c000000000039df5f\u003e] tracing_log_err+0x29b/0x2e0     [\u003c000000004a0e1b07\u003e] parse_atom+0x966/0xb40     [\u003c0000000023b24337\u003e] parse_expr+0x5f3/0xdb0     [\u003c00000000594ad074\u003e] event_hist_trigger_parse+0x27f8/0x3560     [\u003c00000000293a9645\u003e] trigger_process_regex+0x135/0x1a0     [\u003c000000005c22b4f2\u003e] event_trigger_write+0x87/0xf0     [\u003c000000002cadc509\u003e] vfs_write+0x162/0x670     [\u003c0000000059c3b9be\u003e] ksys_write+0xca/0x170     [\u003c00000000f1cddc00\u003e] do_syscall_64+0x3e/0xc0     [\u003c00000000868ac68c\u003e] entry_SYSCALL_64_after_hwframe+0x72/0xdc  The problem is that the error log needs to be freed when the instance is removed.","modified":"2026-09-15T09:03:02.604849309Z","published":"2025-09-18T14:15:40.183Z","upstream":["CVE-2023-53375"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-53375"}],"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-2023-53375.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-2023-53375.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-2023-53375.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:N/I:N/A:H"}]}