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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.
Metrics
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OR
*cpe:2.3:o:linux:linux_kernel:4.15:-:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.16.55 up to (excluding) 3.17
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.2.100 up to (excluding) 3.3
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.14.24 up to (excluding) 4.15
*cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.13
*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15.1 up to (excluding) 6.18.23
New CVE Received from kernel.org4/24/2026 11:16:45 AM
Action
Type
Old Value
New Value
Added
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.
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