Vulnerability in Linux

[ Description ]Official description

In the Linux kernel, the following vulnerability has been resolved: veth: manage XDP program pointers during channel resize veth_set_channels() tears down XDP resources for removed RX queues without clearing rq->xdp_prog. If the program is then detached or replaced, those queues keep the old pointer after bpf_prog_put(). A later channel increase can re-enable NAPI and run the freed program. BUG: unable to handle page fault for address: ffffc90000256048 Oops: Oops: 0000 [#1] SMP KASAN NOPTI RIP: veth_xdp_rcv_skb (include/linux/filter.h:779 include/net/xdp.h:696 drivers/net/veth.c:820) Call Trace: veth_xdp_rcv (drivers/net/veth.c:941) veth_poll (drivers/net/veth.c:986) __napi_poll (net/core/dev.c:7787) net_rx_action (net/core/dev.c:7850 net/core/dev.c:8007) handle_softirqs (kernel/softirq.c:645) Kernel panic - not syncing: Fatal exception in interrupt

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund8 Oct 2026WID-SEC-2026-3822

  Linux Kernel: Multiple vulnerabilities allow an unspecified attack Translated from German

  CVE-2026-98380CVE-2026-98376CVE-2026-98381+7 more CVEs

[ References ]References

• git.kernel.org/stable/c/1a5c5b9c64ba5f39dba55da6e12561ca56eeb758
• git.kernel.org/stable/c/25bb7c36225220d30f404d7e29d2e052bc5f4b99
• git.kernel.org/stable/c/3c10a5dd0d38f506f671dbb59e9d0ee4c72076f9
• git.kernel.org/stable/c/43f6b647f209591b1e3f726bb16b8dcba6b95908
• git.kernel.org/stable/c/7104a370714346b667712913dc16abf14bbc97ed
• git.kernel.org/stable/c/7a8e143109ff2736dc79e41dcd55af7ceab7520a
• git.kernel.org/stable/c/f0e8dba8c224981e53c792c6b3dbb7604fb2c2c6