CVE-2023-54132 | THREATINT

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 Reserved 2025-12-24 | Published 2025-12-24 | Updated 2025-12-24 | Assigner Linux

Product status

Default status

unaffected

02827e1796b33f1794966f5c3101f8da2dfa9c1d (git) before 880c79bdb002b9d5b6940e52c2ad3829c2178207

affected

02827e1796b33f1794966f5c3101f8da2dfa9c1d (git) before 7a4579cd6e4936de107c82499c3c9ee11b63401e

affected

02827e1796b33f1794966f5c3101f8da2dfa9c1d (git) before 060fecf1114ff9fcfe87953fe8c4fc5048777160

affected

02827e1796b33f1794966f5c3101f8da2dfa9c1d (git) before 7ee7a86e28ce9ead7112286c388df8d254c373c6

affected

02827e1796b33f1794966f5c3101f8da2dfa9c1d (git) before f01b2894928affa3339d355608713cf3db8360b8

affected

02827e1796b33f1794966f5c3101f8da2dfa9c1d (git) before 96a845419b3722869f09883319de4d55c44d9aef

affected

02827e1796b33f1794966f5c3101f8da2dfa9c1d (git) before cc4efd3dd2ac9f89143e5d881609747ecff04164

affected

Default status

affected

4.19

affected

Any version before 4.19

unaffected

5.4.243 (semver)

unaffected

5.10.180 (semver)

unaffected

5.15.111 (semver)

unaffected

6.1.28 (semver)

unaffected

6.2.15 (semver)

unaffected

6.3.2 (semver)

unaffected

6.4 (original_commit_for_fix)

unaffected

References

git.kernel.org/...c/880c79bdb002b9d5b6940e52c2ad3829c2178207

git.kernel.org/...c/7a4579cd6e4936de107c82499c3c9ee11b63401e

git.kernel.org/...c/060fecf1114ff9fcfe87953fe8c4fc5048777160

git.kernel.org/...c/7ee7a86e28ce9ead7112286c388df8d254c373c6

git.kernel.org/...c/f01b2894928affa3339d355608713cf3db8360b8

git.kernel.org/...c/96a845419b3722869f09883319de4d55c44d9aef

git.kernel.org/...c/cc4efd3dd2ac9f89143e5d881609747ecff04164

cve.org (CVE-2023-54132)

nvd.nist.gov (CVE-2023-54132)

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