sctp: avoid livelock while updating retransmit path

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98614
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-18 16:17:14 UTC
Updated2026-10-19 10:19:25 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: sctp: avoid livelock while updating retransmit path sctp_assoc_update_retran_path() can loop forever when every remaining transport, including retran_path, is SCTP_UNCONFIRMED: the state check runs before the wraparound test, so the loop cannot observe that it has completed a full pass. Fix this by considering a transport only when it is not UNCONFIRMED, then checking whether the walk has returned to retran_path. This makes the full-pass termination independent of the transport state while preserving the existing fallback selection semantics. Also restore the NULL guard around the retran_path assignment. In the all-UNCONFIRMED case there is no eligible replacement transport, and installing NULL would leave later retransmit-path users and the debug print with a NULL path.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 3fe624c3843694ab096fdb198526ba0c659febbe git Not specified
CNA Linux Linux affected 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 43410c1f2db53516e95ddd7e5b4b02f495b78121 git Not specified
CNA Linux Linux affected 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 d893a7cc1cb41dd510f338bb2bfd8f29b14eaf49 git Not specified
CNA Linux Linux affected 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 83b1a7f9e718828ef364a7b004254ebb2d0035fe git Not specified
CNA Linux Linux affected 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 173610fff55022a5ad1579fbcc7faa97467b58b7 git Not specified
CNA Linux Linux affected 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 c9338057df1025f578fe7d0ff08bada87b8b838d git Not specified
CNA Linux Linux affected 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 ddc34cc0834c873871e88b055ee6a260676efe97 git Not specified
CNA Linux Linux affected 4c47af4d5eb2c2f78f886079a3920a7078a6f0a0 d2c31b837406395e576afeb25958c98e9938f3f6 git Not specified
CNA Linux Linux affected 8ceaec02b17397d12719a282945abc95f8149d9f git Not specified
CNA Linux Linux affected d2c2bdcdd8c5ce3d2a68aa3353ed1f340c3e500e git Not specified
CNA Linux Linux affected 3.10.106 3.11 semver Not specified
CNA Linux Linux affected 3.12.71 3.13 semver Not specified
CNA Linux Linux affected 3.14 Not specified
CNA Linux Linux unaffected 3.14 semver Not specified
CNA Linux Linux unaffected 5.10.271 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.222 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.189 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.158 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.112 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.55 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.9 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d2c31b837406395e576afeb25958c98e9938f3f6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3fe624c3843694ab096fdb198526ba0c659febbe 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/83b1a7f9e718828ef364a7b004254ebb2d0035fe 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c9338057df1025f578fe7d0ff08bada87b8b838d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/43410c1f2db53516e95ddd7e5b4b02f495b78121 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d893a7cc1cb41dd510f338bb2bfd8f29b14eaf49 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/173610fff55022a5ad1579fbcc7faa97467b58b7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ddc34cc0834c873871e88b055ee6a260676efe97 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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