CVE-2023-54132 - Vulnerability Details

- erofs: stop parsing non-compact HEAD index if clusterofs is invalid

Description

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

erofs: stop parsing non-compact HEAD index if clusterofs is invalid

Syzbot generated a crafted image [1] with a non-compact HEAD index of
clusterofs 33024 while valid numbers should be 0 ~ lclustersize-1,
which causes the following unexpected behavior as below:

BUG: unable to handle page fault for address: fffff52101a3fff9
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23ffed067 P4D 23ffed067 PUD 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4398 Comm: kworker/u5:1 Not tainted 6.3.0-rc6-syzkaller-g09a9639e56c0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Workqueue: erofs_worker z_erofs_decompressqueue_work
RIP: 0010:z_erofs_decompress_queue+0xb7e/0x2b40
...
Call Trace:
<TASK>
z_erofs_decompressqueue_work+0x99/0xe0
process_one_work+0x8f6/0x1170
worker_thread+0xa63/0x1210
kthread+0x270/0x300
ret_from_fork+0x1f/0x30

Note that normal images or images using compact indexes are not
impacted. Let's fix this now.

[1] https://lore.kernel.org/r/000000000000ec75b005ee97fbaa@google.com

Published: 2025-12-24

Score: n/a

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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

unaffected

Version	Status	Constraints
`02827e1796b33f1794966f5c3101f8da2dfa9c1d`	affected	< 880c79bdb002b9d5b6940e52c2ad3829c2178207
`02827e1796b33f1794966f5c3101f8da2dfa9c1d`	affected	< 7a4579cd6e4936de107c82499c3c9ee11b63401e
`02827e1796b33f1794966f5c3101f8da2dfa9c1d`	affected	< 060fecf1114ff9fcfe87953fe8c4fc5048777160
`02827e1796b33f1794966f5c3101f8da2dfa9c1d`	affected	< 7ee7a86e28ce9ead7112286c388df8d254c373c6
`02827e1796b33f1794966f5c3101f8da2dfa9c1d`	affected	< f01b2894928affa3339d355608713cf3db8360b8
`02827e1796b33f1794966f5c3101f8da2dfa9c1d`	affected	< 96a845419b3722869f09883319de4d55c44d9aef
`02827e1796b33f1794966f5c3101f8da2dfa9c1d`	affected	< cc4efd3dd2ac9f89143e5d881609747ecff04164

Linux

affected

Version	Status	Constraints
`4.19`	affected	—
`0`	unaffected	< 4.19
`5.4.243`	unaffected	≤ 5.4.*
`5.10.180`	unaffected	≤ 5.10.*
`5.15.111`	unaffected	≤ 5.15.*
`6.1.28`	unaffected	≤ 6.1.*
`6.2.15`	unaffected	≤ 6.2.*
`6.3.2`	unaffected	≤ 6.3.*
`6.4`	unaffected	≤ *

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00054.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/060fecf1114ff9fcfe87953fe8c4fc5048777160
https://git.kernel.org/stable/c/7a4579cd6e4936de107c82499c3c9ee11b63401e
https://git.kernel.org/stable/c/7ee7a86e28ce9ead7112286c388df8d254c373c6
https://git.kernel.org/stable/c/880c79bdb002b9d5b6940e52c2ad3829c2178207
https://git.kernel.org/stable/c/96a845419b3722869f09883319de4d55c44d9aef
https://git.kernel.org/stable/c/cc4efd3dd2ac9f89143e5d881609747ecff04164
https://git.kernel.org/stable/c/f01b2894928affa3339d355608713cf3db8360b8
https://lore.kernel.org/linux-cve-announce/2025122420-CVE-2023-54132-dd33@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2023-54132
https://www.cve.org/CVERecord?id=CVE-2023-54132

History

Thu, 25 Dec 2025 12:15:00 +0000

Type	Values Removed	Values Added
References		https://lore.kernel.org/linux-cve-announce/2025122420-CVE-2023-54132-dd33@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2023-54132 https://www.cve.org/CVERecord?id=CVE-2023-54132

Wed, 24 Dec 2025 13:15:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: erofs: stop parsing non-compact HEAD index if clusterofs is invalid Syzbot generated a crafted image [1] with a non-compact HEAD index of clusterofs 33024 while valid numbers should be 0 ~ lclustersize-1, which causes the following unexpected behavior as below: BUG: unable to handle page fault for address: fffff52101a3fff9 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffed067 P4D 23ffed067 PUD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4398 Comm: kworker/u5:1 Not tainted 6.3.0-rc6-syzkaller-g09a9639e56c0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Workqueue: erofs_worker z_erofs_decompressqueue_work RIP: 0010:z_erofs_decompress_queue+0xb7e/0x2b40 ... Call Trace: <TASK> z_erofs_decompressqueue_work+0x99/0xe0 process_one_work+0x8f6/0x1170 worker_thread+0xa63/0x1210 kthread+0x270/0x300 ret_from_fork+0x1f/0x30 Note that normal images or images using compact indexes are not impacted. Let's fix this now. [1] https://lore.kernel.org/r/000000000000ec75b005ee97fbaa@google.com
Title		erofs: stop parsing non-compact HEAD index if clusterofs is invalid
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/060fecf1114ff9fcfe87953fe8c4fc5048777160 https://git.kernel.org/stable/c/7a4579cd6e4936de107c82499c3c9ee11b63401e https://git.kernel.org/stable/c/7ee7a86e28ce9ead7112286c388df8d254c373c6 https://git.kernel.org/stable/c/880c79bdb002b9d5b6940e52c2ad3829c2178207 https://git.kernel.org/stable/c/96a845419b3722869f09883319de4d55c44d9aef https://git.kernel.org/stable/c/cc4efd3dd2ac9f89143e5d881609747ecff04164 https://git.kernel.org/stable/c/f01b2894928affa3339d355608713cf3db8360b8

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-12-24T13:06:49.030Z

Updated: 2026-05-11T19:56:06.331Z

Reserved: 2025-12-24T13:02:52.522Z

Link: CVE-2023-54132

Vulnrichment

No data.

NVD

Status : Deferred

Published: 2025-12-24T13:16:15.180

Modified: 2026-04-15T00:35:42.020

Link: CVE-2023-54132

Redhat

Severity :

Publid Date: 2025-12-24T00:00:00Z

Links: CVE-2023-54132 - Bugzilla

OpenCVE Enrichment

No data.

Weaknesses

No weakness.

Tracking

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