The bug is inside net/mac802154/llsec.c (IEEE 802.15.4 support). If fails allocating of the cipher handle for AEAD during initialization of LR-WPAN, then NULL pointer dereference could happen. Reference: https://syzkaller.appspot.com/bug?extid=12cf5fbfdeba210a89dd Upstream patch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8 The previously used CVE for this one was CVE-2021-33033 (because this issue already incorrectly referenced before from that older CVE).
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1984560]
This was fixed for Fedora with the 5.11.14 stable kernel updates.
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:4140 https://access.redhat.com/errata/RHSA-2021:4140
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:4356 https://access.redhat.com/errata/RHSA-2021:4356
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2021-3659