CVE-2022-2905

medium

Description

An out-of-bounds memory read flaw was found in the Linux kernel's BPF subsystem in how a user calls the bpf_tail_call function with a key larger than the max_entries of the map. This flaw allows a local user to gain unauthorized access to data.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2121800

https://lore.kernel.org/bpf/[email protected]ogearbox.net/

https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html

Details

Source: MITRE

Published: 2022-09-09

Updated: 2022-11-21

Type: CWE-125

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM