CVE-2026-31663 (GCVE-0-2026-31663)
Vulnerability from cvelistv5
Published
2026-04-24 14:45
Modified
2026-08-21 12:12
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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 with device teardown. Remove the dev_put from the async resumption entry and instead drop the reference after the NF_HOOK call in transport_finish, using a saved device pointer since NF_HOOK may consume the skb. This covers NF_DROP, NF_QUEUE and NF_STOLEN paths that skip the okfn. For non-transport exits (decaps, gro, drop) and secondary async return points, release the reference inline when async is set.
References
Impacted products
Vendor Product Version
Linux Linux Version: acf568ee859f098279eadf551612f103afdacb4e
Version: acf568ee859f098279eadf551612f103afdacb4e
Version: acf568ee859f098279eadf551612f103afdacb4e
Version: acf568ee859f098279eadf551612f103afdacb4e
Version: 69895c5ea0ca2e8d7de1e6d36965d0ab9730787f
Version: 833760100588acfb267dac4d6a02ab9931237739
Version: e095ecaec6d94aa2156cceb98a85d409b51190f3
Version: 3.2.100   ≤
Version: 3.16.55   ≤
Version: 4.14.24   ≤
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