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CVE-2022-50543

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix mr->map double free rxe_mr_cleanup() which tries to free mr->map again will be called when rxe_mr_init_user() fai…

Published Oct 7, 2025CWE-415EPSS 0.16%

Overview

CVE-2022-50543 is a high-severity vulnerability. It was published on October 7, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/rxe: Fix mr->map double free

rxe_mr_cleanup() which tries to free mr->map again will be called when

rxe_mr_init_user() fails:

CPU: 0 PID: 4917 Comm: rdma_flush_serv Kdump: loaded Not tainted 6.1.0-rc1-roce-flush+ #25

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014

Call Trace:

<TASK>

dump_stack_lvl+0x45/0x5d

panic+0x19e/0x349

end_report.part.0+0x54/0x7c

kasan_report.cold+0xa/0xf

rxe_mr_cleanup+0x9d/0xf0 [rdma_rxe]

__rxe_cleanup+0x10a/0x1e0 [rdma_rxe]

rxe_reg_user_mr+0xb7/0xd0 [rdma_rxe]

ib_uverbs_reg_mr+0x26a/0x480 [ib_uverbs]

ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x1a2/0x250 [ib_uverbs]

ib_uverbs_cmd_verbs+0x1397/0x15a0 [ib_uverbs]

This issue was firstly exposed since commit b18c7da63fcb ("RDMA/rxe: Fix

memory leak in error path code") and then we fixed it in commit

8ff5f5d9d8cf ("RDM

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/06f73568f553b5be6ba7f6fe274d333ea29fc46dRefgit.kernel.org/stable/c/6ce577f09013206e36e674cd27da3707b2278268Refgit.kernel.org/stable/c/7d984dac8f6bf4ebd3398af82b357e1d181ecaac

How CyberStrike helps

Frequently asked questions

What is CVE-2022-50543?

CVE-2022-50543 is a high-severity vulnerability. It was published on October 7, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-50543?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-50543?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-50543?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-50543 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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