SB20260727160 - Out-of-bounds read in Linux kernel bluetooth driver
Published: July 27, 2026
Security Bulletin ID
SB20260727160
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-64407)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in nxp_recv_fw_req_v3() in the btnxpuart Bluetooth driver when processing v3 firmware download requests from the controller. A local user can supply a controller that requests an offset or length beyond the firmware image to disclose sensitive information.
The issue occurs during firmware download over UART.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/21e60eb4d95854196e7c0e77383f35e7ac95df61
- https://git.kernel.org/stable/c/2a68a773089204af1c8581dc79668b775418c5ee
- https://git.kernel.org/stable/c/441088792ffec3ca01f4efe2934060570eb11eb8
- https://git.kernel.org/stable/c/49bcb39e3a041ce26021f77971eaccb49a275118
- https://git.kernel.org/stable/c/badff6c3bed8923a1257a853f137d447976eec30