CVE-2022-50666

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < 5c75d608fad58301b63e7d69200c13c3a1d411daaffected
LinuxLinux303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < 74ad141e995a730760b1bcfa14854b7f1057d6bcaffected
LinuxLinux303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < 0ed8bf9d0bb19f3f5eedd73f04aaf5bba9ac0737affected
LinuxLinux303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < a3c278807a459e6f50afee6971cabe74cccfb490affected
LinuxLinux5.3affected
LinuxLinux0 < 5.3unaffected
LinuxLinux5.15.75 <= 5.15.*unaffected
LinuxLinux5.19.17 <= 5.19.*unaffected
LinuxLinux6.0.3 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

References