of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74352
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:36 UTC
Updated2026-08-15 06:22:36 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails The global pointer 'reserved_mem' continues to reference the reserved_mem_array which lives in __initdata if alloc_reserved_mem_array() fails. of_reserved_mem_lookup() is exported for post-init use, that would dereference freed memory and trigger a use-after-free. So reset reserved_mem_count to 0 when alloc_reserved_mem_array() fails.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected b6ae53301eb41f0f59f83c161248b186bca7da70 6d28e6ad3c5c9248577f21057baa9bf16fa9ef3b git Not specified
CNA Linux Linux affected 00c9a452a235c61f099504783badd9a7675ff5a5 9af58d10d0d8c08b822de5fc99e61f31a87ede8d git Not specified
CNA Linux Linux affected 00c9a452a235c61f099504783badd9a7675ff5a5 cbd3102fe27bc87da244bf4c3ba670ea4698b0a8 git Not specified
CNA Linux Linux affected 00c9a452a235c61f099504783badd9a7675ff5a5 e1686ca81dbf3edbde589b7daf312b45cbf76e03 git Not specified
CNA Linux Linux affected 6.13 Not specified
CNA Linux Linux unaffected 6.13 semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/cbd3102fe27bc87da244bf4c3ba670ea4698b0a8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e1686ca81dbf3edbde589b7daf312b45cbf76e03 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6d28e6ad3c5c9248577f21057baa9bf16fa9ef3b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9af58d10d0d8c08b822de5fc99e61f31a87ede8d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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