# CVE-2023-54132: linux: In the Linux kernel, the following vulnerability has been resolved:  erofs: stop parsing non-compact HEAD index if cl...

CVE-2023-54132 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-54132, released December 24, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-54132
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0018
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 24, 2025

## 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

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.37-1 | [DEBIAN-CVE-2023-54132](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54132.md) | Dec 24, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-54132](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54132.md) | Dec 24, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-54132](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54132.md) | Dec 24, 2025 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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