Out-of-bounds read in Linux kernel - CVE-2026-46140
Published: May 29, 2026
Vulnerability identifier: #VU133056
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-46140
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in btmtk_usb_hci_wmt_sync() when processing a short firmware response in a WMT event SKB. A local attacker can provide a specially crafted short firmware response to disclose sensitive information.
How to mitigate CVE-2026-46140
Install security update from vendor's repository.