Information disclosure in Linux kernel

1) Processor optimization removal or modification of security-critical code

EUVDB-ID: #VU93808

Risk: Low

CVSSv4.0: 4.3 [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/E:U/U:Clear]

CVE-ID: CVE-2024-35996

CWE-ID: CWE-1037 - Processor optimization removal or modification of security-critical code

Exploit availability: No

Description

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

The vulnerability exists due to speculative execution in kernel/cpu.c. A local user can gain access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/af6d6a923b40bf6471e44067ac61cc5814b48e7f
https://git.kernel.org/stable/c/36b32816fbab267611f073223f1b0b816ec5920f
https://git.kernel.org/stable/c/38f17d1fbb5bfb56ca1419e2d06376d57a9396f9
https://git.kernel.org/stable/c/8292f4f8dd1b005d0688d726261004f816ef730a
https://git.kernel.org/stable/c/fd8547ebc187037cc69441a15c1441aeaab80f49
https://git.kernel.org/stable/c/fe42754b94a42d08cf9501790afc25c4f6a5f631
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html

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.