CVE-2023-53375— tracing: Free error logs of tracing instances
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于移除跟踪实例时未释放错误日志，可能导致内存泄漏。
Possible ATT&CK Techniques 1 AI
T1078 · Valid AccountsAffected Version Matrix 14
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 2f754e771b1a6feba670782e82c45555984ac43b< 987f599fc556a4e64c405d8dde32c70311e8c278 |
affected |
2f754e771b1a6feba670782e82c45555984ac43b< 6e36373aa5ffa8e00fe7c71b3209f6f17081e552 |
affected | ||
2f754e771b1a6feba670782e82c45555984ac43b< 33d5d4e67a0e13c3ca6257fa67bf6503bc000878 |
affected | ||
2f754e771b1a6feba670782e82c45555984ac43b< c0cf0f55be043ef67c38f492aa37ed1986d2f6b6 |
affected | ||
2f754e771b1a6feba670782e82c45555984ac43b< 46771c34d6721abfd9e7903eaed2201051eebec6 |
affected | ||
2f754e771b1a6feba670782e82c45555984ac43b< 3357c6e429643231e60447b52ffbb7ac895aca22 |
affected | ||
5.2 |
affected | ||
< 5.2 |
unaffected | ||
| … +6 more rows | |||
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I. Basic Information for CVE-2023-53375
Vulnerability Information
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Vulnerability Title
tracing: Free error logs of tracing instances
Source: CVE Program / CVE List V5
Vulnerability Description
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/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 > /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>] kmalloc_trace+0x2a/0xa0
[<00000000b2938940>] tracing_log_err+0x277/0x2e0
[<000000004a0e1b07>] parse_atom+0x966/0xb40
[<0000000023b24337>] parse_expr+0x5f3/0xdb0
[<00000000594ad074>] event_hist_trigger_parse+0x27f8/0x3560
[<00000000293a9645>] trigger_process_regex+0x135/0x1a0
[<000000005c22b4f2>] event_trigger_write+0x87/0xf0
[<000000002cadc509>] vfs_write+0x162/0x670
[<0000000059c3b9be>] ksys_write+0xca/0x170
[<00000000f1cddc00>] do_syscall_64+0x3e/0xc0
[<00000000868ac68c>] 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:
[<000000006a747de5>] __kmalloc+0x4d/0x160
[<000000000039df5f>] tracing_log_err+0x29b/0x2e0
[<000000004a0e1b07>] parse_atom+0x966/0xb40
[<0000000023b24337>] parse_expr+0x5f3/0xdb0
[<00000000594ad074>] event_hist_trigger_parse+0x27f8/0x3560
[<00000000293a9645>] trigger_process_regex+0x135/0x1a0
[<000000005c22b4f2>] event_trigger_write+0x87/0xf0
[<000000002cadc509>] vfs_write+0x162/0x670
[<0000000059c3b9be>] ksys_write+0xca/0x170
[<00000000f1cddc00>] do_syscall_64+0x3e/0xc0
[<00000000868ac68c>] entry_SYSCALL_64_after_hwframe+0x72/0xdc
The problem is that the error log needs to be freed when the instance is
removed.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于移除跟踪实例时未释放错误日志，可能导致内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-53375
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Same Patch Batch · Linux · 2025-09-18 · 121 CVEs total
| CVE-2022-50401 | 9.8 CRITICAL | nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure |
| CVE-2023-53382 | 9.8 CRITICAL | net/smc: Reset connection when trying to use SMCRv2 fails. |
| CVE-2022-50410 | 9.8 CRITICAL | NFSD: Protect against send buffer overflow in NFSv2 READ |
| CVE-2022-50419 | 8.8 HIGH | Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times |
| CVE-2023-53431 | 8.8 HIGH | scsi: ses: Handle enclosure with just a primary component gracefully |
| CVE-2023-53432 | 8.8 HIGH | firewire: net: fix use after free in fwnet_finish_incoming_packet() |
| CVE-2022-50413 | 8.8 HIGH | wifi: mac80211: fix use-after-free |
| CVE-2022-50386 | 8.8 HIGH | Bluetooth: L2CAP: Fix user-after-free |
| CVE-2023-53374 | 8.8 HIGH | Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early |
| CVE-2023-53372 | 8.2 HIGH | sctp: fix a potential overflow in sctp_ifwdtsn_skip |
| CVE-2022-50399 | 7.8 HIGH | media: atomisp: prevent integer overflow in sh_css_set_black_frame() |
| CVE-2023-53394 | 7.8 HIGH | net/mlx5e: xsk: Fix crash on regular rq reactivation |
| CVE-2023-53429 | 7.8 HIGH | btrfs: don't check PageError in __extent_writepage |
| CVE-2023-53373 | 7.8 HIGH | crypto: seqiv - Handle EBUSY correctly |
| CVE-2023-53398 | 7.8 HIGH | mlx5: fix possible ptp queue fifo use-after-free |
| CVE-2022-50417 | 7.8 HIGH | drm/panfrost: Fix GEM handle creation ref-counting |
| CVE-2023-53387 | 7.8 HIGH | scsi: ufs: core: Fix device management cmd timeout flow |
| CVE-2023-53388 | 7.8 HIGH | drm/mediatek: Clean dangling pointer on bind error path |
| CVE-2023-53386 | 7.8 HIGH | Bluetooth: Fix potential use-after-free when clear keys |
| CVE-2023-53378 | 7.8 HIGH | drm/i915/dpt: Treat the DPT BO as a framebuffer |
Showing top 20 of 121 CVEs. View all on vendor page → →
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CVE-2023-7356
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Same vendor: Linux
-
CVE-2023-7356
Bluetooth: ISO: Copy BASE if service data matches EIR_BAA_SE -
CVE-2026-98869
bpf: Infer zext_dst based on static register liveness analys -
CVE-2026-98868
dm-pcache: reject a kset that overruns its segment -
CVE-2026-98867
dm-pcache: bound the logical key offset from persistent memo -
CVE-2026-98866
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V. Comments for CVE-2023-53375
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