RDMA/mana_ib: drain QP references after partial table insertion

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-92513
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:17:54 UTC
Updated2026-09-17 17:17:54 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: RDMA/mana_ib: drain QP references after partial table insertion mana_table_store_ud_qp() publishes a QP at its send-queue id before inserting the receive-queue id, dropping the XArray lock between the two xa_insert_irq() calls. A concurrent completion handler can look up the QP and take a transient reference. When the second insertion fails, the rollback erased only the send-queue entry and returned, leaving both the initial table reference and the transient reference outstanding while RDMA core frees the QP, causing a use-after-free. Drain the reference as normal destruction does: drop the initial reference and wait for qp->free, releasing the QP only after every concurrent lookup returns its reference.

Risk And Classification

EPSS: 0.001980000 probability, percentile 0.098680000 (date 2026-09-18)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 8001e9257eca23264550ff9e34598ee43a80f0f9 4aaa2ab816c710be7385b31d08373edcdcd71656 git Not specified
CNA Linux Linux affected 8001e9257eca23264550ff9e34598ee43a80f0f9 638b9a5364c1482e5d104823c1a3884b3d249484 git Not specified
CNA Linux Linux affected 8001e9257eca23264550ff9e34598ee43a80f0f9 97f7c2262c28ebcae64fc957ee978646684a5ed9 git Not specified
CNA Linux Linux affected 6.15 Not specified
CNA Linux Linux unaffected 6.15 semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/4aaa2ab816c710be7385b31d08373edcdcd71656 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/638b9a5364c1482e5d104823c1a3884b3d249484 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/97f7c2262c28ebcae64fc957ee978646684a5ed9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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