SB2026102202 - Out-of-bounds write in Linux kernel bluetooth

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds write (CVE-ID: CVE-2023-7356)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker on the local network to potentially cause a denial of service through kernel memory corruption.

The vulnerability exists due to an out-of-bounds write in the Linux kernel Bluetooth ISO component when processing periodic advertisement reports without adequately validating the service UUID and data length before copying data into the BASE buffer. A remote attacker on the local network can transmit a specially crafted Bluetooth periodic advertisement to potentially overwrite kernel memory and cause a denial of service.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/927ef409f713929dea2b9a5ed5bb65e712be0050
• https://git.kernel.org/stable/c/ba25efe15e8fd909884e113a86c6ccd07d88256e
• https://git.kernel.org/stable/c/f4da3ee15de9944482382181329bb6d7335ca003