What’s Vulnerable › Vulnerabilities

CVE-2022-49089: IB/rdmavt: add lock to call to rvt_error_qp to prevent a race condition

• Severity: medium (CVSS 4.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-10-15
• Weakness: CWE-362

Description

In the Linux kernel, the following vulnerability has been resolved: IB/rdmavt: add lock to call to rvt_error_qp to prevent a race condition The documentation of the function rvt_error_qp says both r_lock and s_lock need to be held when calling that function. It also asserts using lockdep that both of those locks are held. However, the commit I referenced in Fixes accidentally makes the call to rvt_error_qp in rvt_ruc_loopback no longer covered by r_lock. This results in the lockdep assertion failing and also possibly in a race condition.

Affected products

• Linux kernel: from 5.0.4 before 5.4.189; from 5.5 before 5.10.111; from 5.11 before 5.15.34; from 5.16 before 5.16.20; from 5.17 before 5.17.3; 5.18-rc1 — fixed in 5.10.111, 5.15.34, 5.16.20, 5.17.3, 5.4.189

How to fix

Upgrade to a fixed version: Linux kernel 5.10.111, 5.15.34, 5.16.20, 5.17.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/43c2d7890ecabe527448a6c391fb2d9a5e6bbfe0
• https://git.kernel.org/stable/c/4d809f69695d4e7d1378b3a072fa9aef23123018
• https://git.kernel.org/stable/c/57800cc36e55db0547461c49acf5cd84c0f502b0
• https://git.kernel.org/stable/c/77ffb2495a41098f9d6a14f8aefde3188da75944
• https://git.kernel.org/stable/c/8a50937227c385a477177c9ffa122b4230e40666
• https://git.kernel.org/stable/c/92f1947c0d26060e978b3a9f21f32ce7c8c9cca3

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