CVE-2023-53375
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-53375
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53375.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2023-53375
- Downstream
- Related
- Published
- 2025-09-18T13:33:21Z
- Modified
- 2025-10-16T18:16:01.986348Z
- Summary
- tracing: Free error logs of tracing instances
- 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' > instances/foo/events/sched/schedswitch/trigger # cat instances/foo/errorlog [ 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 > /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: [<00000000dae26536>] kmalloctrace+0x2a/0xa0 [<00000000b2938940>] tracinglogerr+0x277/0x2e0 [<000000004a0e1b07>] parseatom+0x966/0xb40 [<0000000023b24337>] parseexpr+0x5f3/0xdb0 [<00000000594ad074>] eventhisttriggerparse+0x27f8/0x3560 [<00000000293a9645>] triggerprocessregex+0x135/0x1a0 [<000000005c22b4f2>] eventtriggerwrite+0x87/0xf0 [<000000002cadc509>] vfswrite+0x162/0x670 [<0000000059c3b9be>] ksyswrite+0xca/0x170 [<00000000f1cddc00>] dosyscall64+0x3e/0xc0 [<00000000868ac68c>] entrySYSCALL64afterhwframe+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: [<000000006a747de5>] _kmalloc+0x4d/0x160 [<000000000039df5f>] tracinglogerr+0x29b/0x2e0 [<000000004a0e1b07>] parseatom+0x966/0xb40 [<0000000023b24337>] parseexpr+0x5f3/0xdb0 [<00000000594ad074>] eventhisttriggerparse+0x27f8/0x3560 [<00000000293a9645>] triggerprocessregex+0x135/0x1a0 [<000000005c22b4f2>] eventtriggerwrite+0x87/0xf0 [<000000002cadc509>] vfswrite+0x162/0x670 [<0000000059c3b9be>] ksyswrite+0xca/0x170 [<00000000f1cddc00>] dosyscall64+0x3e/0xc0 [<00000000868ac68c>] entrySYSCALL64afterhwframe+0x72/0xdcThe problem is that the error log needs to be freed when the instance is removed.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/3357c6e429643231e60447b52ffbb7ac895aca22
- https://git.kernel.org/stable/c/33d5d4e67a0e13c3ca6257fa67bf6503bc000878
- https://git.kernel.org/stable/c/46771c34d6721abfd9e7903eaed2201051eebec6
- https://git.kernel.org/stable/c/6e36373aa5ffa8e00fe7c71b3209f6f17081e552
- https://git.kernel.org/stable/c/987f599fc556a4e64c405d8dde32c70311e8c278
- https://git.kernel.org/stable/c/c0cf0f55be043ef67c38f492aa37ed1986d2f6b6
Affected packages
Git / 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
-
Introduced2f754e771b1a6feba670782e82c45555984ac43bFixed987f599fc556a4e64c405d8dde32c70311e8c278
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced2f754e771b1a6feba670782e82c45555984ac43bFixed6e36373aa5ffa8e00fe7c71b3209f6f17081e552
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced2f754e771b1a6feba670782e82c45555984ac43bFixed33d5d4e67a0e13c3ca6257fa67bf6503bc000878
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced2f754e771b1a6feba670782e82c45555984ac43bFixedc0cf0f55be043ef67c38f492aa37ed1986d2f6b6
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced2f754e771b1a6feba670782e82c45555984ac43bFixed46771c34d6721abfd9e7903eaed2201051eebec6
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced2f754e771b1a6feba670782e82c45555984ac43bFixed3357c6e429643231e60447b52ffbb7ac895aca22