What’s Vulnerable › Vulnerabilities

CVE-2022-50522: mcb: mcb-parse: fix error handing in chameleon_parse_gdd()

• Severity: low (CVSS 3.3 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: 2025-10-07 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: mcb: mcb-parse: fix error handing in chameleon_parse_gdd() If mcb_device_register() returns error in chameleon_parse_gdd(), the refcount of bus and device name are leaked. Fix this by calling put_device() to give up the reference, so they can be released in mcb_release_dev() and kobject_cleanup().

Affected products

• Linux kernel: from 3.15 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/110dc34c9fa33d37f55b394b1199ea6c0ad1ee84
• https://git.kernel.org/stable/c/43bfc7c2402a22d3b4eb08c040f274ba2b76461a
• https://git.kernel.org/stable/c/4a9f1a8b3af287581ffb690d0e1593c681729ddb
• https://git.kernel.org/stable/c/728ac3389296caf68638628c987aeae6c8851e2d
• https://git.kernel.org/stable/c/7b289b791a59386dc23a00d3cf17a0db984b40d3
• https://git.kernel.org/stable/c/891f606ae0765bc9ca99f5276735be4d338f0255
• https://git.kernel.org/stable/c/b948baa29394ec5f4e6ec28486e7d06a76caee91
• https://git.kernel.org/stable/c/cf6e70c0ced50b52415ac0c88eba1fb09c500a5a
• https://git.kernel.org/stable/c/fd85ece416fd7edb945203e59d4cd94952f77e7c

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