What’s Vulnerable › Vulnerabilities

CVE-2022-50245: rapidio: fix possible UAF when kfifo_alloc() fails

• Severity: high (CVSS 7.8 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: 2025-09-15 · updated 2026-06-17
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: rapidio: fix possible UAF when kfifo_alloc() fails If kfifo_alloc() fails in mport_cdev_open(), goto err_fifo and just free priv. But priv is still in the chdev->file_list, then list traversal may cause UAF. This fixes the following smatch warning: drivers/rapidio/devices/rio_mport_cdev.c:1930 mport_cdev_open() warn: '&priv->list' not removed from list

Affected products

• Linux kernel: from 4.6 before 4.9.337; from 4.10 before 4.14.303; from 4.15 before 4.19.270; from 4.20 before 5.4.229; from 5.5 before 5.10.163; from 5.11 before 5.15.86 — fixed in 4.14.303, 4.19.270, 4.9.337, 5.10.163, 5.15.86, 5.4.229

How to fix

Upgrade to a fixed version: Linux kernel 4.14.303, 4.19.270, 4.9.337, 5.10.163. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/02d7d89f816951e0862147d751b1150d67aaebdd
• https://git.kernel.org/stable/c/2a6c75adf8192f07ddcdd4a1a13488c890a73919
• https://git.kernel.org/stable/c/2ba06e57f933f0eac242e8b389433da1cc00d4d5
• https://git.kernel.org/stable/c/2dfd60724d271a6ab99f93f40f38f2ced1ddbb87
• https://git.kernel.org/stable/c/2f5cc7fd73fd6253cc71214f0dd499cc62feb469
• https://git.kernel.org/stable/c/311b488405ac45af46756b1c8f1d27007b68b07e
• https://git.kernel.org/stable/c/5ee850645e42f541ce1ea8130c2b27cc495f965c
• https://git.kernel.org/stable/c/a253dde0403a153075ffb254f6f7b2635e49e97a
• https://git.kernel.org/stable/c/cb87af2c19c0993f6e21f75b963a5599c5a73e76

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