Linux Kernel up to 5.15.23/5.16.9 phy stm32_usbphyc_pll_enable reference count

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 5.15.23/5.16.9. Impacted is the function stm32_usbphyc_pll_enable of the component phy. The manipulation results in reference count. This vulnerability is known as CVE-2022-48820. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 5.15.23/5.16.9. Affected is the function stm32_usbphyc_pll_enable of the component phy. The manipulation with an unknown input leads to a reference count vulnerability. CWE is classifying the issue as CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. This is going to have an impact on availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: phy: stm32: fix a refcount leak in stm32_usbphyc_pll_enable() This error path needs to decrement "usbphyc->n_pll_cons.counter" before returning.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2022-48820 since 07/16/2024. Technical details are known, but there is no available exploit.

Upgrading to version 5.15.24 or 5.16.10 eliminates this vulnerability. Applying the patch 94b16ca86ab6/0ad1a88fa3eb/cfc826c88a79 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.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 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
• 5.16.0
• 5.16.1
• 5.16.2
• 5.16.3
• 5.16.4
• 5.16.5
• 5.16.6
• 5.16.7
• 5.16.8
• 5.16.9

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion