What’s Vulnerable › Vulnerabilities

CVE-2022-50019: tty: serial: Fix refcount leak bug in ucc_uart.c

• Severity: medium (CVSS 5.5 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: 2025-06-18 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: tty: serial: Fix refcount leak bug in ucc_uart.c In soc_info(), of_find_node_by_type() will return a node pointer with refcount incremented. We should use of_node_put() when it is not used anymore.

Affected products

• Linux kernel: from 2.6.25 before 4.9.326; from 4.10 before 4.14.291; from 4.15 before 4.19.256; from 4.20 before 5.4.211; from 5.5 before 5.10.138; from 5.11 before 5.15.63 — fixed in 4.14.291, 4.19.256, 4.9.326, 5.10.138, 5.15.63, 5.19.4

How to fix

Upgrade to a fixed version: Linux kernel 4.14.291, 4.19.256, 4.9.326, 5.10.138. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/17c32546166d8a7d2579c4b57c8b16241f94a66b
• https://git.kernel.org/stable/c/59bc4c19d53bdac61ec952c01c6e864f5f0f8367
• https://git.kernel.org/stable/c/81939c4fbc2d5c754d0f1c1f05149d4b70d751ed
• https://git.kernel.org/stable/c/8245e7d1d7f75a9255ad1e8146752e5051d528b8
• https://git.kernel.org/stable/c/ca3fc1c38e4253bc019881301a28ea60b8b0bca3
• https://git.kernel.org/stable/c/d24d7bb2cd947676f9b71fb944d045e09b8b282f
• https://git.kernel.org/stable/c/ec56f886f3bf0f15f7a3844d4c025e165b8e8de7
• https://git.kernel.org/stable/c/f6ed634eedb1a8a6a8cb110a7695c7abb70ffcbf

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