CVE-2022-49178: memstick/mspro_block: fix handling of read-only devices

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 2026-10-15
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: memstick/mspro_block: fix handling of read-only devices Use set_disk_ro to propagate the read-only state to the block layer instead of checking for it in ->open and leaking a reference in case of a read-only device.

Affected products

Linux kernel: before 5.16.19; from 5.17 before 5.17.2 — fixed in 5.16.19, 5.17.2

How to fix

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

References

https://git.kernel.org/stable/c/057b53c4f87690d626203acef8b63d52a9bf2f43
https://git.kernel.org/stable/c/6a0725b9d78ff6efdc95a37e4f05072e79c63918
https://git.kernel.org/stable/c/6dab421bfe06a59bf8f212a72e34673e8acf2018

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