What’s Vulnerable › Vulnerabilities

CVE-2022-49206: RDMA/mlx5: Fix memory leak in error flow for subscribe event routine

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix memory leak in error flow for subscribe event routine In case the second xa_insert() fails, the obj_event is not released. Fix the error unwind flow to free that memory to avoid a memory leak.

Affected products

• Linux kernel: from 5.3 before 5.4.189; from 5.5 before 5.10.110; from 5.11 before 5.15.33; from 5.16 before 5.16.19; from 5.17 before 5.17.2 — fixed in 5.10.110, 5.15.33, 5.16.19, 5.17.2, 5.4.189

How to fix

Upgrade to a fixed version: Linux kernel 5.10.110, 5.15.33, 5.16.19, 5.17.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0174a89663a5ef83617da15bf24c0af2f62b6c7f
• https://git.kernel.org/stable/c/087f9c3f2309ed183f7e4b85ae57121d8663224d
• https://git.kernel.org/stable/c/414b4e8738484379f18d6c4e780787c80dbf8a2c
• https://git.kernel.org/stable/c/8dd392e352d3269938fea32061a74655a613f929
• https://git.kernel.org/stable/c/c98d903ff9e79c210beddea4e6bc15ac38e25aa5
• https://git.kernel.org/stable/c/d66498507801fd9a20307a15a0814a0a016c3cde

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