CVE-2022-50666
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.
How to fix
- Linux Linux5c75d608fad58301b63e7d69200c13c3a1d411da, 74ad141e995a730760b1bcfa14854b7f1057d6bc, 0ed8bf9d0bb19f3f5eedd73f04aaf5bba9ac0737, a3c278807a459e6f50afee6971cabe74cccfb490 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b ≤ v < 5c75d608fad58301b63e7d69200c13c3a1d411da, 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b ≤ v < 74ad141e995a730760b1bcfa14854b7f1057d6bc, 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b ≤ v < 0ed8bf9d0bb19f3f5eedd73f04aaf5bba9ac0737, 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b ≤ v < a3c278807a459e6f50afee6971cabe74cccfb490, 5.3 | 5c75d608fad58301b63e7d69200c13c3a1d411da, 74ad141e995a730760b1bcfa14854b7f1057d6bc, 0ed8bf9d0bb19f3f5eedd73f04aaf5bba9ac0737, a3c278807a459e6f50afee6971cabe74cccfb490 |
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