CVE-2026-43107 xfrm: account XFRMA_IF_ID in aevent size calculation

In the Linux kernel, the following vulnerability has been resolved: xfrm: account XFRMAIFID in aevent size calculation xfrmgetae allocates the reply skb with xfrmaeventmsgsize, then buildaevent appends attributes including XFRMAIFID when x-ifid is set. xfrmaeventmsgsize does not include space for...

CVE-2026-43107

CVE-2026-43107 concerns the Linux kernel xfrm subsystem. The root cause is that xfrm_aevent_msgsize() did not reserve space for XFRMA_IF_ID, causing build_aevent() to fail with -EMSGSIZE and potentially trigger a kernel panic via a malformed netlink interaction when if_id is set. The fix uncondit...