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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.

PUBLISHED Reserved 2025-12-30 | Published 2025-12-30 | Updated 2025-12-30 | Assigner Linux

Product status

Default status
unaffected

376e3fdecb0dcae216c0ac559cff066f460bf47b (git) before ceb089e2337f810d3594d310953d9af4783f660a
affected

376e3fdecb0dcae216c0ac559cff066f460bf47b (git) before 58662cfb459150b9c0c22d20cddaea439b3844bd
affected

376e3fdecb0dcae216c0ac559cff066f460bf47b (git) before d4b97925e87eb133e400fe4a482d750c74ce392f
affected

Default status
affected

5.17
affected

Any version before 5.17
unaffected

6.1.20 (semver)
unaffected

6.2.7 (semver)
unaffected

6.3 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/ceb089e2337f810d3594d310953d9af4783f660a

git.kernel.org/...c/58662cfb459150b9c0c22d20cddaea439b3844bd

git.kernel.org/...c/d4b97925e87eb133e400fe4a482d750c74ce392f

cve.org (CVE-2023-54167)

nvd.nist.gov (CVE-2023-54167)

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Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.