Linux is vulnerable to denial of service. The vulnerability exists in the prealloc_elems_and_freelist
function of kernel/bpf/stackmap.c
, allowing unprivileged users to trigger an eBPF
multiplication integer overflow with a resultant out-of-bounds write.
git://git.launchpad.net/ubuntu-cve-tracker/tree/active/CVE-2021-41864
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.12
git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=30e29a9a2bc6a4888335a6ede968b75cd329657a
github.com/torvalds/linux/commit/30e29a9a2bc6a4888335a6ede968b75cd329657a
lists.debian.org/debian-lts-announce/2021/12/msg00012.html
lists.debian.org/debian-lts-announce/2022/03/msg00012.html
lists.fedoraproject.org/archives/list/[email protected]/message/7BLLVKYAIETEORUPTFO3TR3C33ZPFXQM/
lists.fedoraproject.org/archives/list/[email protected]/message/LAT3RERO6QBKSPJBNNRWY3D4NCGTFOS7/
lists.fedoraproject.org/archives/list/[email protected]/message/SYKURLXBB2555ASWMPDNMBUPD6AG2JKQ/
security.netapp.com/advisory/ntap-20211029-0004/
www.debian.org/security/2022/dsa-5096