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CVE-2026-98381

7.8 high Published
NVD · CVE.org

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

Fix

Microsoft's update · Important

  • Release Notes — azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 · build 6.6.158.1-1

From the 2026-Oct release note of Microsoft's Security Update Guide, revised 2026-10-30.

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 5

  1. StatusReceived → PublishedNVD modified 2026-10-24 14:08
  2. StatusPublished → ReceivedNVD modified 2026-10-24 14:16
  3. CVSS7.8 (v3.1, CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)NVD modified 2026-10-24 14:16
  4. StatusReceived → PublishedNVD modified 2026-10-19 09:18
  5. First seenunscoredNVD modified 2026-10-09 08:16

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 7