Entreprise d'experts en Sécurité Informatique : Audits et conseils en cybersécurité
Entreprise française de cybersécurité depuis 2004
☎ 03 60 47 09 81 - info@securiteinfo.com


CVE-2022-0500

Description

A flaw was found in unrestricted eBPF usage by the BPF_BTF_LOAD, leading to a possible out-of-bounds memory write in the Linux kernel’s BPF subsystem due to the way a user loads BTF. This flaw allows a local user to crash or escalate their privileges on the system.

POC

Reference

- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=20b2aff4bc15bda809f994761d5719827d66c0b4

- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=216e3cd2f28dbbf1fe86848e0e29e6693b9f0a20

- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=34d3a78c681e8e7844b43d1a2f4671a04249c821

- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4807322660d4290ac9062c034aed6b87243861

- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=48946bd6a5d695c50b34546864b79c1f910a33c1

- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c25b2ae136039ffa820c26138ed4a5e5f3ab3841

- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cf9f2f8d62eca810afbd1ee6cc0800202b000e57

Github

No PoCs found on GitHub currently.