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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2023-54132
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-24 13:16:15 UTC
Updated2026-08-04 10:19:30 UTC
DescriptionIn 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/[email protected]

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.001500000 probability, percentile 0.047060000 (date 2026-08-06)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 02827e1796b33f1794966f5c3101f8da2dfa9c1d 880c79bdb002b9d5b6940e52c2ad3829c2178207 git Not specified
CNA Linux Linux affected 02827e1796b33f1794966f5c3101f8da2dfa9c1d 7a4579cd6e4936de107c82499c3c9ee11b63401e git Not specified
CNA Linux Linux affected 02827e1796b33f1794966f5c3101f8da2dfa9c1d 060fecf1114ff9fcfe87953fe8c4fc5048777160 git Not specified
CNA Linux Linux affected 02827e1796b33f1794966f5c3101f8da2dfa9c1d 7ee7a86e28ce9ead7112286c388df8d254c373c6 git Not specified
CNA Linux Linux affected 02827e1796b33f1794966f5c3101f8da2dfa9c1d f01b2894928affa3339d355608713cf3db8360b8 git Not specified
CNA Linux Linux affected 02827e1796b33f1794966f5c3101f8da2dfa9c1d 96a845419b3722869f09883319de4d55c44d9aef git Not specified
CNA Linux Linux affected 02827e1796b33f1794966f5c3101f8da2dfa9c1d cc4efd3dd2ac9f89143e5d881609747ecff04164 git Not specified
CNA Linux Linux affected 4.19 Not specified
CNA Linux Linux unaffected 4.19 semver Not specified
CNA Linux Linux unaffected 5.4.243 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.180 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.111 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.28 6.1.* semver Not specified
CNA Linux Linux unaffected 6.2.15 6.2.* semver Not specified
CNA Linux Linux unaffected 6.3.2 6.3.* semver Not specified
CNA Linux Linux unaffected 6.4 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/7a4579cd6e4936de107c82499c3c9ee11b63401e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cc4efd3dd2ac9f89143e5d881609747ecff04164 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/060fecf1114ff9fcfe87953fe8c4fc5048777160 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f01b2894928affa3339d355608713cf3db8360b8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7ee7a86e28ce9ead7112286c388df8d254c373c6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/96a845419b3722869f09883319de4d55c44d9aef 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/880c79bdb002b9d5b6940e52c2ad3829c2178207 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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