CVE-2026-63947

Summary

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: HIDP: fix missing length checks in hidp_input_report()

hidp_input_report() reads keyboard and mouse payload data from an skb without first verifying that skb->len contains enough data.

hidp_recv_intr_frame() pulls the 1-byte HIDP header before dispatching to hidp_input_report(). If a paired device sends a truncated packet, the handler reads beyond the valid skb data, resulting in an out-of-bounds read of skb data. The OOB bytes may be interpreted as phantom key presses or spurious mouse movement.

Replace the open-coded length tracking and pointer arithmetic with skb_pull_data() calls. skb_pull_data() returns NULL if the requested bytes are not present, eliminating the need for a manual size variable and the separate skb->len guard.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1f08a90013e1e632b34321334e861fcefc056505affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cc3832b19f863e3677c5651f001a2e3795f39eb8affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d313683d6ccdd8c01e0562270a2ae25b86d8461daffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d7d6a81b8dd1a8d084a1b755db9406041d53adb5affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6348dfed5b0f9c6074f14322332e97493d32fef0affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b83dcacd2ec7fcc5a48be215f82d573759f87ec2affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2a3ac9ee11dbb9845f3947cef4a79dba658cf6f6affected
LinuxLinux2.6.12affected
LinuxLinux0 < 2.6.12unaffected
LinuxLinux5.15.210 <= 5.15.*unaffected
LinuxLinux6.1.176 <= 6.1.*unaffected
LinuxLinux6.6.143 <= 6.6.*unaffected
LinuxLinux6.12.93 <= 6.12.*unaffected
LinuxLinux6.18.35 <= 6.18.*unaffected
LinuxLinux7.0.12 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References