CVE Catalog

CVE-2026-72468

Low risk· EPSS 10%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.20%

10th percentile - higher than 10% of all known CVEs

Summary

In the Linux kernel, the xprtrdma module has a race condition during re_id initialization. rpcrdma_create_id() registers ep->re_rn before rpcrdma_ep_create() assigns ep->re_id, allowing a local administrator to trigger RDMA device removal in that window, leading to NULL pointer dereference in trace_xprtrdma_device_removal(). The fix assigns re_id before publishing re_rn.

Risk Assessment

The vulnerability can lead to a kernel crash (NULL pointer dereference) due to a deliberate race, allowing a local attacker to cause system unavailability.

Recommendation

Apply the kernel patch that initializes re_id before registration. Update the system to a kernel version with the fix.

Other vulnerabilities in Linux kernel

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Original NVD description (English source)

In the Linux kernel, the following vulnerability has been resolved: xprtrdma: Initialize re_id before removal registration rpcrdma_create_id() registers ep->re_rn with the rpcrdma ib_client before returning the new rdma_cm_id to rpcrdma_ep_create(). However rpcrdma_ep_create() currently stores that pointer in ep->re_id only after rpcrdma_create_id() returns. A local administrator can race an NFS/RDMA mount against RDMA device removal. If rpcrdma_remove_one() observes the just-registered notification before rpcrdma_ep_create() assigns ep->re_id, rpcrdma_ep_removal_done() calls trace_xprtrdma_device_removal(NULL). The tracepoint dereferences id->device->name and copies id->route.addr.dst_addr, so the callback can crash the kernel with a NULL pointer dereference. Store the rdma_cm_id in ep->re_id immediately before publishing ep->re_rn. The existing error path still destroys the id directly if registration fails; ep is then freed by the caller without using ep->re_id. Remove the later duplicate assignment in rpcrdma_ep_create().

Vulnerability data from NVD (NIST) · CISA KEV · EPSS