Skip to content
CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-31663

xfrm: hold dev ref until after transport_finish NF_HOOK

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • acf568ee859f098279eadf551612f103afdacb4e to < 4d06caedea587c59cc2cc893ceecc57c75c64312affected
  • acf568ee859f098279eadf551612f103afdacb4e to < 94439cbe478b53f92223da9aae95fffb28623c3faffected
  • acf568ee859f098279eadf551612f103afdacb4e to < 4236c30b437b80f673b9e08c8fae38b8d471ac9eaffected
  • acf568ee859f098279eadf551612f103afdacb4e to < 0f451b43c88bf2b9c038b414be580efee42e031baffected
  • acf568ee859f098279eadf551612f103afdacb4e to < 5002beda5cac69d522dc54da0d5d463ed9c963d2affected
  • acf568ee859f098279eadf551612f103afdacb4e to < 1c428b03840094410c5fb6a5db30640486bbbfcbaffected
  • 69895c5ea0ca2e8d7de1e6d36965d0ab9730787faffected
  • 833760100588acfb267dac4d6a02ab9931237739affected
  • e095ecaec6d94aa2156cceb98a85d409b51190f3affected
  • 3.2.100 to < 3.3affected
  • 3.16.55 to < 3.17affected
  • 4.14.24 to < 4.15affected

Linux Linux

Default version status: affected

  • 4.15affected
  • 0 to < 4.15unaffected
  • 6.1.191 to ≤ 6.1.*unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.94 to ≤ 6.12.*unaffected
  • 6.18.23 to ≤ 6.18.*unaffected
  • 6.19.13 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References