# CVE-2022-50736: linux: In the Linux kernel, the following vulnerability has been resolved:  RDMA/siw: Fix immediate work request flush to co...

CVE-2022-50736 is fixed in 63 products on 1 platform, first by RHSA-2024:2394, released April 30, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-50736
- Priority: High
- CVSS: 7.1 (high)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 30, 2024

## Description

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 which may write undefined values for completion queue elements status or opcode, if the CQ is memory mapped to user land. It avoids the same out-of-bounds access to arrays for status and opcode mapping as described above.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool RHEL 9 | 0:7.3.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug-devel-matched RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-debug-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-devel-matched RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-64k-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-abi-stablelists RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-devel-matched RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-debug-uki-virt RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-devel-matched RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-doc RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug-kvm RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-debug-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-kvm RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-rt-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-tools RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-tools-libs RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-tools-libs-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-uki-virt RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump-devel RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump-devel-matched RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump-modules RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump-modules-core RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | kernel-zfcpdump-modules-extra RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | libperf RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2022-50736](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50736.md) | Dec 24, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2022-50736](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50736.md) | Dec 24, 2025 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2022-50736](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50736.md) | Dec 24, 2025 |
| Linux | perf RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | python3-perf RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | rtla RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |
| Linux | rv RHEL 9 | 0:5.14.0-427.13.1.el9_4 | [RHSA-2024:2394](https://patchblox.com/security/data/fix/linux/rhsa-2024-2394.md) | Apr 30, 2024 |

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