What’s Vulnerable › Vulnerabilities

CVE-2022-50856: cifs: Fix xid leak in cifs_ses_add_channel()

• Severity: unknown
• 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: 2025-12-30 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix xid leak in cifs_ses_add_channel() Before return, should free the xid, otherwise, the xid will be leaked.

Affected products

• Linux kernel: 5.5 — 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/7286f875510486fdc2fc426b7c826262e2283a65
• https://git.kernel.org/stable/c/847301f0ee1c29f34cc48547ce1071990f24969c
• https://git.kernel.org/stable/c/db2a8b6c17e128d91f35d836c569f4a6bda4471b
• https://git.kernel.org/stable/c/e909d054bdea75ef1ec48c18c5936affdaecbb2c

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