svcrdma: Reject connection when transport allocation fails
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 7 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: svcrdma: Reject connection when transport allocation fails handle_connect_req() returns without action when svc_rdma_create_xprt() fails to allocate the new transport. The CM core returns 0 for CONNECT_REQUEST events, so it does not destroy the new rdma_cm_id. Each allocation failure under memory pressure leaks one rdma_cm_id, and a remote peer driving connection attempts can amplify this. Reject the connection by returning a non-zero status from the CM event handler, which tells the CM core to destroy the orphaned cm_id.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.109, 6.18.50, 7.2.4, 7.3
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-89531
- 2026-10-03 Alias added: GHSA-vgrv-wfr9-vqh2
- 2026-10-06 Affected versions changed · Red Hat
- 2026-10-06 CVSS score changed · Red Hat
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-10-21 Fix available: Linux/Linux@5bf47bbea3c22c0af2293b6c393ab04d5420f7ab, Linux/[email protected] · CNA
- 2026-10-21 1 new reference · CNA
- 2026-10-30 Fix available: Linux/Linux@387401ebe7f4897acd18321dc94817ad6a33f580, Linux/[email protected] · CNA
- 2026-10-30 1 new reference · CNA
- 2026-11-07 Affected versions changed · Red Hat
References
Other 6
- https://git.kernel.org/stable/c/387401ebe7f4897acd18321dc94817ad6a33f580
- https://git.kernel.org/stable/c/5bf47bbea3c22c0af2293b6c393ab04d5420f7ab
- https://git.kernel.org/stable/c/6e21754bbf75075f3fee1cebc79f3417364235ec
- https://git.kernel.org/stable/c/3cf372cec7ab2cd8c6002bf775cc14d90ccb098b
- https://git.kernel.org/stable/c/1f6a14c142fee4778c32709d1d54595c2e2b7991
- https://git.kernel.org/stable/c/0944462247dcb7de7622cdaaadf5f05c52707dab
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Sources
- CVE-2026-89531 · CVE Program
- CVE-2026-89531 · NVD
- FIRST EPSS
- GHSA-vgrv-wfr9-vqh2 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-89531 · Red Hat security data · CC BY 4.0
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