by Kastro
Paper/Archive/CVE-2022-50666

CVE-2022-50666

Linux Linux — RDMA/siw: Fix QP destroy to wait for all references dropped.

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 54.3.543 × 2010.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Linux303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b – < 5c75d608fad58301b63e7d69200c13c3a1d411da5c75d608fad58301b63e7d69200c13c3a1d411daCNA
Linux303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b – < 74ad141e995a730760b1bcfa14854b7f1057d6bc74ad141e995a730760b1bcfa14854b7f1057d6bcCNA
Linux303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b – < 0ed8bf9d0bb19f3f5eedd73f04aaf5bba9ac07370ed8bf9d0bb19f3f5eedd73f04aaf5bba9ac0737CNA
Linux303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b – < a3c278807a459e6f50afee6971cabe74cccfb490a3c278807a459e6f50afee6971cabe74cccfb490CNA
Linux5.35.15.75CNA

Scores by source

Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgit.kernel.org/stable/c/5c75d608fad58301b63e7d69200c13c3a1d411darefgit.kernel.org/stable/c/74ad141e995a730760b1bcfa14854b7f1057d6bcrefgit.kernel.org/stable/c/0ed8bf9d0bb19f3f5eedd73f04aaf5bba9ac0737refgit.kernel.org/stable/c/a3c278807a459e6f50afee6971cabe74cccfb490