What’s Vulnerable › Vulnerabilities

CVE-2022-50874: RDMA/erdma: Fix refcount leak in erdma_mmap

• Severity: unknown
• 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: 2025-12-30 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Fix refcount leak in erdma_mmap rdma_user_mmap_entry_get() take reference, we should release it when not need anymore, add the missing rdma_user_mmap_entry_put() in the error path to fix it.

Affected products

• Linux kernel: 6.0 — fixed in 6.3

How to fix

Upgrade to a fixed version: Linux kernel 6.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/410f0f46ffca4d0102470c1e0c747ecfece4204c
• https://git.kernel.org/stable/c/8372207b009d6abdd60bb05624640bd86386599f
• https://git.kernel.org/stable/c/ee84146c05ad2316b9a7222d0ec4413e0bf30eeb

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