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CVE-2022-50758: staging: vt6655: fix potential memory leak

• 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: 2025-12-24 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: staging: vt6655: fix potential memory leak In function device_init_td0_ring, memory is allocated for member td_info of priv->apTD0Rings[i], with i increasing from 0. In case of allocation failure, the memory is freed in reversed order, with i decreasing to 0. However, the case i=0 is left out and thus memory is leaked. Modify the memory freeing loop to include the case i=0.

Affected products

• Linux kernel: 4.18 — 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/16a45e78a687eb6c69acc4e62b94b6508b0bfbda
• https://git.kernel.org/stable/c/1b3cebeca99e8e0aa4fa57faac8dbf41e967317a
• https://git.kernel.org/stable/c/c8ff91535880d41b49699b3829fb6151942de29e
• https://git.kernel.org/stable/c/cfdf139258614ef65b0f68b857ada5328fb7c0e5
• https://git.kernel.org/stable/c/e741e38aa98704fbb959650ecd270b71b2670680
• https://git.kernel.org/stable/c/fb5f569bcda8f87bd47d8030bfae343d757fa3ea
• https://git.kernel.org/stable/c/ff8551d411f12b5abc5ca929ab87643afa8a9588

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