HID: bpf: prevent buffer overflow in hid_hw_request

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Summary

CVECVE-2026-31401
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-03 16:16:39 UTC
Updated2026-04-03 16:16:39 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: HID: bpf: prevent buffer overflow in hid_hw_request right now the returned value is considered to be always valid. However, when playing with HID-BPF, the return value can be arbitrary big, because it's the return value of dispatch_hid_bpf_raw_requests(), which calls the struct_ops and we have no guarantees that the value makes sense.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 8bd0488b5ea58655ad6fdcbe0408ef49b16882b1 d6efaa50af62fb0790dd1fd4e7e5506b46312510 git Not specified
CNA Linux Linux affected 8bd0488b5ea58655ad6fdcbe0408ef49b16882b1 73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1 git Not specified
CNA Linux Linux affected 8bd0488b5ea58655ad6fdcbe0408ef49b16882b1 eb57dae20fdf6f3069cdc07821fa3bb46de381d7 git Not specified
CNA Linux Linux affected 8bd0488b5ea58655ad6fdcbe0408ef49b16882b1 2b658c1c442ec1cd9eec5ead98d68662c40fe645 git Not specified
CNA Linux Linux affected 6.11 Not specified
CNA Linux Linux unaffected 6.11 semver Not specified
CNA Linux Linux unaffected 6.12.78 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.20 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.10 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0-rc5 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d6efaa50af62fb0790dd1fd4e7e5506b46312510 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2b658c1c442ec1cd9eec5ead98d68662c40fe645 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/eb57dae20fdf6f3069cdc07821fa3bb46de381d7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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