SECUFOCUSNOW
Home›CVE index›CVE-2022-50666
Review reviewCritical

CVE-2022-50666

Linux

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 alrea...

CVSS
9.8
EPSS
0.66%
47.9% percentile
CISA KEV
Not listed
Published
2025.12.10
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.66%
Technical severityCVSS 9.8

Vulnerability overview

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 alrea...

Affected product and versions

Product
Linux
Affected versions
>= 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < 5c75d608fad58301b63e7d69200c13c3a1d411da, >= 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < 74ad141e995a730760b1bcfa14854b7f1057d6bc, >= 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < 0ed8bf9d0bb19f3f5eedd73f04aaf5bba9ac0737, >= 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < a3c278807a459e6f50afee6971cabe74cccfb490, >= 5.3
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Not available