Information disclosure in Linux kernel sched

1) Information disclosure

EUVDB-ID: #VU91361

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-48639

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists due to information disclosure within the net/sched/cls_api.c. A local user can gain access to sensitive information.

Mitigation

Install update 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/903f7d322c17d8e306d766404b4604e81653902a
https://git.kernel.org/stable/c/8844c750eeb03452e2b3319c27a526f447b82596
https://git.kernel.org/stable/c/f8162aed962be8fa07445b2b5928e84ab40dd8d7
https://git.kernel.org/stable/c/0559d91ee3a2cd81b15ad5cd507539d6da867f88
https://git.kernel.org/stable/c/c2e1cfefcac35e0eea229e148c8284088ce437b5

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.