xfrm: input: hold netns during deferred transport reinjection (Linux Linux)

CVE-2026-63919
HIGH 8.8

At a glance

Source
NVD
EPSS
EPSS 0.65 % · percentile 51 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: xfrm: input: hold netns during deferred transport reinjection Transport-mode reinjection stores a struct net pointer in skb->cb and uses it later from xfrm_trans_reinject(). That pointer must stay valid until the deferred callback runs. Take a netns reference when queueing deferred reinjection work and drop it after the callback completes. Use maybe_get_net() so the queueing path does not revive a namespace that is already being torn down. This keeps the existing workqueue design and fixes the netns lifetime handling in one place for all users of xfrm_trans_queue_net().

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 7b3801927e52f8621de311277f7fc727635019e7 < 7ee59eda8820b758ed29e1cd3222359c7b97302c ; affected 7b3801927e52f8621de311277f7fc727635019e7 < 2df7059a18afb7d3aee6c36cad5d371c198111d4 ; affected 7b3801927e52f8621de311277f7fc727635019e7 < 8dfabcba6a943a7a02ebe1e1637c361ba96acbaa ; affected 7b3801927e52f8621de311277f7fc727635019e7 < 48ce101cd630d6745b6923b5bad8358bc4c119da ; affected 7b3801927e52f8621de311277f7fc727635019e7 < 55ddfc41451f01c588089cd74957a05311b6f202 ; affected 7b3801927e52f8621de311277f7fc727635019e7 < 9f7ebb45a83afc3216e855e57d51bb4bc9b5232e
Linux · Linuxaffected 5.6 ; unaffected 0 < 5.6 ; unaffected 5.10.259 ≤ 5.10.* ; unaffected 5.15.210 ≤ 5.15.* ; unaffected 6.1.176 ≤ 6.1.* ; unaffected 6.6.143 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD