CVE-2022-2905

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.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Trends

Current EPSS score: 0.01%• Percentile: 3%

Techniques & Countermeasures

• CWE-125•Out-of-bounds Read

  The product reads data past the end, or before the beginning, of the intended buffer.

Affected Systems

• debian•debian_linux

  10.0

• linux•linux_kernel

  < 6.0 | 6.0:rc1 | 6.0:rc2 | 6.0:rc3

• redhat•enterprise_linux

  8.0

References (3)

• https://bugzilla.redhat.com/show_bug.cgi?id=2121800
• https://lore.kernel.org/bpf/984b37f9fdf7ac36831d2137415a4a915744c1b6.1661462653.git.daniel%40iogearbox.net/
• https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html