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THREAT OPS › Threat News › [NVD] CVE-2026-31663 (HIGH 7.8) — In the Linux kernel, the following vulnerability has been resolved: xfrm: hold dev ref until after transport_finish NF_HOOK After async crypto completes, xfrm_input_resume() calls dev_put() immediately on re-entry before the skb reaches transport_finish. The skb->dev pointer is

[NVD] CVE-2026-31663 (HIGH 7.8) — In the Linux kernel, the following vulnerability has been resolved: xfrm: hold dev ref until after transport_finish NF_HOOK After async crypto completes, xfrm_input_resume() calls dev_put() immediately on re-entry before the skb reaches transport_finish. The skb->dev pointer is

lownvdPublished 2026-04-24

CVE-2026-31663 CVSS: 7.8 HIGH Published: 2026-04-24T15:16:45.947

In the Linux kernel, the following vulnerability has been resolved:

xfrm: hold dev ref until after transport_finish NF_HOOK

After async crypto completes, xfrm_input_resume() calls dev_put() immediately on re-entry before the skb reaches transport_finish. The skb->dev pointer is then used inside NF_HOOK and its okfn, which can race

Indicators of compromise

CVE-2026-31663cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-31663