CVE-2026-63947Bluetooth: HIDP: fix missing length checks in hidp_input_report()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 1f08a90013e1e632b34321334e861fcefc056505; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before cc3832b19f863e3677c5651f001a2e3795f39eb8; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d313683d6ccdd8c01e0562270a2ae25b86d8461d; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d7d6a81b8dd1a8d084a1b755db9406041d53adb5; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6348dfed5b0f9c6074f14322332e97493d32fef0; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b83dcacd2ec7fcc5a48be215f82d573759f87ec2; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 2a3ac9ee11dbb9845f3947cef4a79dba658cf6f6 | CNA record |
References
- https://git.kernel.org/stable/c/1f08a90013e1e632b34321334e861fcefc056505
- https://git.kernel.org/stable/c/cc3832b19f863e3677c5651f001a2e3795f39eb8
- https://git.kernel.org/stable/c/d313683d6ccdd8c01e0562270a2ae25b86d8461d
- https://git.kernel.org/stable/c/d7d6a81b8dd1a8d084a1b755db9406041d53adb5
- https://git.kernel.org/stable/c/6348dfed5b0f9c6074f14322332e97493d32fef0
- https://git.kernel.org/stable/c/b83dcacd2ec7fcc5a48be215f82d573759f87ec2
- https://git.kernel.org/stable/c/2a3ac9ee11dbb9845f3947cef4a79dba658cf6f6
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.