High severity · published Jul 19, 2026
CVE-2026-63947
Bluetooth: HIDP: fix missing length checks in hidp_input_report()
8.8
CVSS
0.3%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
2.6.12.1 before 5.15.210; 5.16 before 6.1.176; 6.2 before 6.6.143; 6.7 before 6.12.93; 6.13 before 6.18.35; 6.19 before 7.0.12; +10 more · source: NVD
LI
Linux · Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 1f08a90013e1e632b34321334e861fcefc056505; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before cc3832b19f863e3677c5651f001a2e3795f39eb8; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d313683d6ccdd8c01e0562270a2ae25b86d8461d; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d7d6a81b8dd1a8d084a1b755db9406041d53adb5; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6348dfed5b0f9c6074f14322332e97493d32fef0; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b83dcacd2ec7fcc5a48be215f82d573759f87ec2; +2 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63947
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-63947
git.kernel.org
https://git.kernel.org/stable/c/1f08a90013e1e632b34321334e861fcefc056505
git.kernel.org
https://git.kernel.org/stable/c/2a3ac9ee11dbb9845f3947cef4a79dba658cf6f6
git.kernel.org
https://git.kernel.org/stable/c/6348dfed5b0f9c6074f14322332e97493d32fef0
git.kernel.org
https://git.kernel.org/stable/c/b83dcacd2ec7fcc5a48be215f82d573759f87ec2
git.kernel.org
https://git.kernel.org/stable/c/cc3832b19f863e3677c5651f001a2e3795f39eb8
git.kernel.org
https://git.kernel.org/stable/c/d313683d6ccdd8c01e0562270a2ae25b86d8461d
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