Linux Kernel up to 5.19.3 tty ucc_uart.c soc_info reference count

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.19.3. This impacts the function soc_info of the file ucc_uart.c of the component tty. The manipulation leads to reference count. This vulnerability is referenced as CVE-2022-50019. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.19.3 and classified as critical. This issue affects the function soc_info of the file ucc_uart.c of the component tty. The manipulation with an unknown input leads to a reference count vulnerability. Using CWE to declare the problem leads to CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. Impacted is availability. The summary by CVE is:

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.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2022-50019 since 06/18/2025. Technical details are known, but no exploit is available.

Upgrading to version 4.9.326, 4.14.291, 4.19.256, 5.4.211, 5.10.138, 5.15.63 or 5.19.4 eliminates this vulnerability. Applying the patch 8245e7d1d7f75a9255ad1e8146752e5051d528b8/ec56f886f3bf0f15f7a3844d4c025e165b8e8de7/59bc4c19d53bdac61ec952c01c6e864f5f0f8367/ca3fc1c38e4253bc019881301a28ea60b8b0bca3/81939c4fbc2d5c754d0f1c1f05149d4b70d751ed/17c32546166d8a7d2579c4b57c8b16241f94a66b/f6ed634eedb1a8a6a8cb110a7695c7abb70ffcbf/d24d7bb2cd947676f9b71fb944d045e09b8b282f is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2025-1350). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• SUSE openSUSE
• Open Source Linux Kernel
• RESF Rocky Linux
• Dell Avamar
• Dell NetWorker
• Dell Secure Connect Gateway
• IBM QRadar SIEM

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.9.325
• 4.14.290
• 4.19.255
• 5.4.210
• 5.10.137
• 5.15.0
• 5.15.1
• 5.15.2
• 5.15.3
• 5.15.4
• 5.15.5
• 5.15.6
• 5.15.7
• 5.15.8
• 5.15.9
• 5.15.10
• 5.15.11
• 5.15.12
• 5.15.13
• 5.15.14
• 5.15.15
• 5.15.16
• 5.15.17
• 5.15.18
• 5.15.19
• 5.15.20
• 5.15.21
• 5.15.22
• 5.15.23
• 5.15.24
• 5.15.25
• 5.15.26
• 5.15.27
• 5.15.28
• 5.15.29
• 5.15.30
• 5.15.31
• 5.15.32
• 5.15.33
• 5.15.34
• 5.15.35
• 5.15.36
• 5.15.37
• 5.15.38
• 5.15.39
• 5.15.40
• 5.15.41
• 5.15.42
• 5.15.43
• 5.15.44
• 5.15.45
• 5.15.46
• 5.15.47
• 5.15.48
• 5.15.49
• 5.15.50
• 5.15.51
• 5.15.52
• 5.15.53
• 5.15.54
• 5.15.55
• 5.15.56
• 5.15.57
• 5.15.58
• 5.15.59
• 5.15.60
• 5.15.61
• 5.15.62
• 5.19.0
• 5.19.1
• 5.19.2
• 5.19.3

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion