SB20260815260 - Race condition in Linux kernel sunrpc xprtrdma

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-72468)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in the xprtrdma NFS/RDMA transport removal callback path when racing an NFS/RDMA mount against RDMA device removal. A local user can trigger the race condition to cause a denial of service.

The issue can result in a NULL pointer dereference in the kernel during device removal handling.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/264ccd7871915749bee55fe0c39467a7f08d5479
• https://git.kernel.org/stable/c/28743571c17b58c21a7216fc9faaf8028df5869b
• https://git.kernel.org/stable/c/51248d877bbc6e604e38aeaf776c2781cb4f0dbd
• https://git.kernel.org/stable/c/bb7caa63e1db22fd03e8dc591b12169e99169dff