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Advisory severityHigh7.0Vendor: MediumRed Hat Linux

High [CVE-2026-63947] fix missing length checks in hidp_input_report

This high-severity Red Hat Linux advisory covers CVE-2026-63947 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-63947 Source published Source updated

VulniPulse record published Record updated

CVE-2026-63947
Affected products & platforms
Red Hat LinuxLinux Kernel
Open source advisory

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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. A flaw was found in the Linux kernel's Bluetooth Human Interface Device Protocol (HIDP).

A remote attacker, by sending specially crafted truncated packets from a paired Bluetooth device, could trigger an out-of-bounds read in the `hidp_input_report()` function. This vulnerability may lead to unintended input, such as phantom key presses or spurious mouse movements, potentially affecting system integrity or user interaction.

Red Hat severity: Moderate — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-125.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Fixed versions
  • kernel-0:6.12.0-211.53.1.el10_2
  • kernel-rt-0:4.18.0-553.166.1.rt7.507.el8_10
  • kernel-0:4.18.0-553.166.1.el8_10
  • kernel-0:5.14.0-687.47.1.el9_8
  • RHSA-2026:65334
  • RHSA-2026:70403
  • RHSA-2026:70402
  • RHSA-2026:67150

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Mitigation

Upgrade to a fixed release: kernel-0:6.12.0-211.53.1.el10_2, kernel-rt-0:4.18.0-553.166.1.rt7.507.el8_10, kernel-0:4.18.0-553.166.1.el8_10, kernel-0:5.14.0-687.47.1.el9_8, RHSA-2026:65334, RHSA-2026:70403. That is the remediation for this advisory.

The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

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