Information disclosure in Linux kernel pwm driver

1) Out-of-bounds read

EUVDB-ID: #VU87681

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-26599

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the of_pwm_single_xlate() function in drivers/pwm/core.c. A local user can trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/7b85554c7c2aee91171e038e4d5442ffa130b282
http://git.kernel.org/stable/c/e5f2b4b62977fb6c2efcbc5779e0c9dce18215f7
http://git.kernel.org/stable/c/bae45b7ebb31984b63b13c3519fd724b3ce92123
http://git.kernel.org/stable/c/a297d07b9a1e4fb8cda25a4a2363a507d294b7c9

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.