Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix QP destroy to wait for all references dropped. Delay QP destroy completion until all siw references to QP are dropped. The calling RDMA core will free QP structure after successful return from siw_qp_destroy() call, so siw must not hold any remaining reference to the QP upon return. A use-after-free was encountered in xfstest generic/460, while testing NFSoRDMA. Here, after a TCP connection drop by peer, the triggered siw_cm_work_handler got delayed until after QP destroy call, referencing a QP which has already freed.
References
- https://git.kernel.org/stable/c/0ed8bf9d0bb19f3f5eedd73f04aaf5bba9ac0737
- https://git.kernel.org/stable/c/5c75d608fad58301b63e7d69200c13c3a1d411da
- https://git.kernel.org/stable/c/74ad141e995a730760b1bcfa14854b7f1057d6bc
- https://git.kernel.org/stable/c/a3c278807a459e6f50afee6971cabe74cccfb490
FAQ
What is CVE-2022-50666?
CVE-2022-50666 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix QP destroy to wait for all references dropped. Delay QP destroy completion until all siw references to QP are droppe...
How severe is CVE-2022-50666?
CVSS scoring is not yet available for CVE-2022-50666. Check NVD for updates.
Is there a patch for CVE-2022-50666?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.