# CVE-2023-54167: linux: In the Linux kernel, the following vulnerability has been resolved:  m68k: mm: Move initrd phys_to_virt handling afte...

CVE-2023-54167 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-54167, released December 30, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-54167
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 30, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  m68k: mm: Move initrd phys_to_virt handling after paging_init()  When booting with an initial ramdisk on platforms where physical memory does not start at address zero (e.g. on Amiga):      initrd: 0ef0602c - 0f800000     Zone ranges:       DMA      [mem 0x0000000008000000-0x000000f7ffffffff]       Normal   empty     Movable zone start for each node     Early memory node ranges       node   0: [mem 0x0000000008000000-0x000000000f7fffff]     Initmem setup node 0 [mem 0x0000000008000000-0x000000000f7fffff]     Unable to handle kernel access at virtual address (ptrval)     Oops: 00000000     Modules linked in:     PC: [<00201d3c>] memcmp+0x28/0x56  As phys_to_virt() relies on m68k_memoffset and module_fixup(), it must not be called before paging_init().  Hence postpone the phys_to_virt handling for the initial ramdisk until after calling paging_init().  While at it, reduce #ifdef clutter by using IS_ENABLED() instead.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.20-1 | [DEBIAN-CVE-2023-54167](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54167.md) | Dec 30, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.20-1 | [DEBIAN-CVE-2023-54167](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54167.md) | Dec 30, 2025 |
| Linux | linux Debian 14 | 6.1.20-1 | [DEBIAN-CVE-2023-54167](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54167.md) | Dec 30, 2025 |

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