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CVE-2026-89531

UnknownEPSS 0.17%

Last modified

CVE-2026-89531 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
0.17%

6.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 377f9b2f4529e0ac702fd7b91e216afd0adc959e, < 387401ebe7f4897acd18321dc94817ad6a33f580; >= 377f9b2f4529e0ac702fd7b91e216afd0adc959e, < 5bf47bbea3c22c0af2293b6c393ab04d5420f7ab; >= 377f9b2f4529e0ac702fd7b91e216afd0adc959e, < 6e21754bbf75075f3fee1cebc79f3417364235ec; >= 377f9b2f4529e0ac702fd7b91e216afd0adc959e, < 3cf372cec7ab2cd8c6002bf775cc14d90ccb098b; >= 377f9b2f4529e0ac702fd7b91e216afd0adc959e, < 1f6a14c142fee4778c32709d1d54595c2e2b7991; >= 377f9b2f4529e0ac702fd7b91e216afd0adc959e, < 0944462247dcb7de7622cdaaadf5f05c52707dab
LinuxLinux2.6.25

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-89531?
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.
How severe is CVE-2026-89531?
Severity scoring for CVE-2026-89531 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-89531?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST