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Review reviewHigh

CVE-2022-50736

Linux

In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix immediate work request flush to completion queue Correctly set send queue element opcode during immediate work request flushing in post sendqueue operation, if the QP is in ERROR state. An undefined ocode value results in out-of-bounds access to an array for mapping the opcode between siw internal and RDMA core representation in work completion generation. It resulted in a KASAN BUG report of type 'global-out-of-bounds' during NFSoRDMA testing. This patch further fixes a potential case of a malicious user whic...

CVSS
7.1
EPSS
0.17%
6.21% percentile
CISA KEV
Not listed
Published
2025.12.24
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.17%
Technical severityCVSS 7.1

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix immediate work request flush to completion queue Correctly set send queue element opcode during immediate work request flushing in post sendqueue operation, if the QP is in ERROR state. An undefined ocode value results in out-of-bounds access to an array for mapping the opcode between siw internal and RDMA core representation in work completion generation. It resulted in a KASAN BUG report of type 'global-out-of-bounds' during NFSoRDMA testing. This patch further fixes a potential case of a malicious user whic...

Affected product and versions

Product
Linux
Affected versions
>= 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < 6af043089d3f1210776d19b6fdabea610d4c7699, >= 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < 75af03fdf35acf15a3977f7115f6b8d10dff4bc7, >= 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < f8d8fbd3b6d6cc3f25790cca5cffe8ded512fef6, >= 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < 355d2eca68c10d713a42f68e62044b3d1c300471, >= 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < f3d26a8589dfdeff328779b511f71fb90b10005e, >= 303ae1cdfdf7280ff4cfbbe65563b5ff15bb025b < bdf1da5df9da680589a7f74448dd0a94dd3e1446, >= 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:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE
Not available