In the Linux kernel, the following vulnerability has been resolved:

tracing: Fix memory leak of iter->temp when reading trace_pipe

kmemleak reports:
unreferenced object 0xffff88814d14e200 (size 256):
comm "cat", pid 336, jiffies 4294871818 (age 779.490s)
hex dump (first 32 bytes):
04 00 01 03 00 00 00 00 08 00 00 00 00 00 00 00 ................
0c d8 c8 9b ff ff ff ff 04 5a ca 9b ff ff ff ff .........Z......
backtrace:
[<ffffffff9bdff18f>] __kmalloc+0x4f/0x140
[<ffffffff9bc9238b>] trace_find_next_entry+0xbb/0x1d0
[<ffffffff9bc9caef>] trace_print_lat_context+0xaf/0x4e0
[<ffffffff9bc94490>] print_trace_line+0x3e0/0x950
[<ffffffff9bc95499>] tracing_read_pipe+0x2d9/0x5a0
[<ffffffff9bf03a43>] vfs_read+0x143/0x520
[<ffffffff9bf04c2d>] ksys_read+0xbd/0x160
[<ffffffff9d0f0edf>] do_syscall_64+0x3f/0x90
[<ffffffff9d2000aa>] entry_SYSCALL_64_after_hwframe+0x6e/0xd8

when reading file 'trace_pipe', 'iter->temp' is allocated or relocated
in trace_find_next_entry() but not freed before 'trace_pipe' is closed.

To fix it, free 'iter->temp' in tracing_release_pipe().

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00026.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
ff895103a84abc85a5f43ecabc7f67cf36e1348f affected < 1a1e793e021d75cd0accd8f329ec9456e5cd105e
ff895103a84abc85a5f43ecabc7f67cf36e1348f affected < 954792db9f61b6c0b8a94b8831fed5f146014029
ff895103a84abc85a5f43ecabc7f67cf36e1348f affected < be970e22c53d5572b2795b79da9716ada937023b
ff895103a84abc85a5f43ecabc7f67cf36e1348f affected < 3f42d57a76e7e96585f08855554e002218cbca0c
ff895103a84abc85a5f43ecabc7f67cf36e1348f affected < d5a821896360cc8b93a15bd888fabc858c038dc0
Linux Linux affected
Version Status Constraints
5.7 affected —
0 unaffected < 5.7
5.10.188 unaffected ≤ 5.10.*
5.15.121 unaffected ≤ 5.15.*
6.1.40 unaffected ≤ 6.1.*
6.4.5 unaffected ≤ 6.4.*
6.5 unaffected ≤ *

No data.

No data.

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/1a1e793e021d75cd0accd8f329ec9456e5cd105e cve-icon cve-icon
https://git.kernel.org/stable/c/3f42d57a76e7e96585f08855554e002218cbca0c cve-icon cve-icon
https://git.kernel.org/stable/c/954792db9f61b6c0b8a94b8831fed5f146014029 cve-icon cve-icon
https://git.kernel.org/stable/c/be970e22c53d5572b2795b79da9716ada937023b cve-icon cve-icon
https://git.kernel.org/stable/c/d5a821896360cc8b93a15bd888fabc858c038dc0 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025123021-CVE-2023-54171-5524@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-54171 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-54171 cve-icon
History

Wed, 31 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Tue, 30 Dec 2025 12:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: tracing: Fix memory leak of iter->temp when reading trace_pipe kmemleak reports: unreferenced object 0xffff88814d14e200 (size 256): comm "cat", pid 336, jiffies 4294871818 (age 779.490s) hex dump (first 32 bytes): 04 00 01 03 00 00 00 00 08 00 00 00 00 00 00 00 ................ 0c d8 c8 9b ff ff ff ff 04 5a ca 9b ff ff ff ff .........Z...... backtrace: [<ffffffff9bdff18f>] __kmalloc+0x4f/0x140 [<ffffffff9bc9238b>] trace_find_next_entry+0xbb/0x1d0 [<ffffffff9bc9caef>] trace_print_lat_context+0xaf/0x4e0 [<ffffffff9bc94490>] print_trace_line+0x3e0/0x950 [<ffffffff9bc95499>] tracing_read_pipe+0x2d9/0x5a0 [<ffffffff9bf03a43>] vfs_read+0x143/0x520 [<ffffffff9bf04c2d>] ksys_read+0xbd/0x160 [<ffffffff9d0f0edf>] do_syscall_64+0x3f/0x90 [<ffffffff9d2000aa>] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 when reading file 'trace_pipe', 'iter->temp' is allocated or relocated in trace_find_next_entry() but not freed before 'trace_pipe' is closed. To fix it, free 'iter->temp' in tracing_release_pipe().
Title tracing: Fix memory leak of iter->temp when reading trace_pipe
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-12-30T12:08:45.441Z

Reserved: 2025-12-30T12:06:44.496Z

Link: CVE-2023-54171

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-30T13:16:04.940

Modified: 2025-12-31T20:43:05.160

Link: CVE-2023-54171

cve-icon Redhat

Severity : Low

Publid Date: 2025-12-30T00:00:00Z

Links: CVE-2023-54171 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.