CVE-2022-50785: fsi: occ: Prevent use after free

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-30 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: fsi: occ: Prevent use after free Use get_device and put_device in the open and close functions to make sure the device doesn't get freed while a file descriptor is open. Also, lock around the freeing of the device buffer and check the buffer before using it in the submit function.

Affected products

Linux kernel: 5.16 — fixed in 6.1

How to fix

Upgrade to a fixed version: Linux kernel 6.1. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/1d5ad0a874ddfcee9f932f54b1d34cbe8b9ddcfe
https://git.kernel.org/stable/c/3593e8efc9f0dac6be70bd5c964eadaa86bf2713
https://git.kernel.org/stable/c/d3e1e24604031b0d83b6c2d38f54eeea265cfcc0

Get alerted when CVE-2022-50785 or the next vulnerability affects your stack