Stack-based buffer overflow in Linux kernel - CVE-2025-38649

Vulnerability identifier: #VU114542

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-38649

CWE-ID: CWE-121

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to stack overflow within the arch/arm64/boot/dts/qcom/qcs615.dtsi. A local user can perform a denial of service (DoS) attack.

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-oem-6.14 (Ubuntu package)
linux-realtime-6.14 (Ubuntu package)
linux-azure (Ubuntu package)
linux-aws-6.14 (Ubuntu package)
linux-gcp-6.14 (Ubuntu package)

Install update from vendor's repository.

linux (Ubuntu package) - addressed in versions 6.14.0-36.36, 6.14.0-36.36~24.04.1, 6.14.0-1016.16~24.04.1, 6.14.0-1017.17, 6.14.0-1020.21
linux-oem-6.14 (Ubuntu package) - update to 6.14.0-1016.16
linux-realtime-6.14 (Ubuntu package) - update to 6.14.0-1016.16~24.04.1
linux-azure (Ubuntu package) - addressed in versions 6.14.0-1017.17, 6.14.0-1017.17~24.04.1
linux-aws-6.14 (Ubuntu package) - update to 6.14.0-1017.17~24.04.1
linux-gcp-6.14 (Ubuntu package) - addressed in versions 6.14.0-1018.18, 6.14.0-1020.21~24.04.1

• https://git.kernel.org/stable/c/a9aaadcb0a6ce0c19616c46525112bc947c6f2b1
• https://git.kernel.org/stable/c/bd4f35786d5f0798cc1f8c187a81a7c998e6c58f
• https://git.kernel.org/stable/c/fbe5be7893b8c7f58c999a26839cd30bc07654c6

• Stack-based buffer overflow in Linux kernel dts qcom
• Ubuntu update for linux-oem-6.14
• Ubuntu update for linux-realtime-6.14
• Ubuntu update for linux
• Ubuntu update for linux-aws-6.14
• Ubuntu update for linux-gcp-6.14
• Ubuntu update for linux-azure