drm/panthor: reject firmware sections with oversized data

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74452
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 13:17:49 UTC
Updated2026-08-15 13:17:49 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/panthor: reject firmware sections with oversized data In panthor_fw_load_section_entry(), the data size to copy is calculated without validating it against the allocated section_size: section->data.size = hdr.data.end - hdr.data.start; If a crafted firmware sets data.size larger than the allocated memory, this could cause a heap buffer overflow in panthor_fw_init_section_mem() memcpy(section->mem->kmap, section->data.buf, section->data.size); Additionally, if the section->data.size exceeds the BO size, could this memset underflow the size calculation, leading to a massive out-of-bounds zeroing of kernel memory? memset(section->mem->kmap + section->data.size, 0, panthor_kernel_bo_size(section->mem) - section->data.size); Reject section entries whose initial data is larger than the section size.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 2718d91816eeed03c09c8abe872e45f59078768c 0e57165ca025a67d8dfd17efd2765fdd4925fdab git Not specified
CNA Linux Linux affected 2718d91816eeed03c09c8abe872e45f59078768c 2a761b9be5863e1d26a584f0c2d1e114a684ed9a git Not specified
CNA Linux Linux affected 2718d91816eeed03c09c8abe872e45f59078768c 7f4674d986c15c74327cb6ac6e2e2afecf061e04 git Not specified
CNA Linux Linux affected 2718d91816eeed03c09c8abe872e45f59078768c a3caaa06809248b996254be5b47e10804a3494e2 git Not specified
CNA Linux Linux affected 6.10 Not specified
CNA Linux Linux unaffected 6.10 semver Not specified
CNA Linux Linux unaffected 6.12.103 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.44 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.8 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc6 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/a3caaa06809248b996254be5b47e10804a3494e2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7f4674d986c15c74327cb6ac6e2e2afecf061e04 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0e57165ca025a67d8dfd17efd2765fdd4925fdab 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2a761b9be5863e1d26a584f0c2d1e114a684ed9a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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