Vulnerability in Kernel package: soc: bcm: brcmstb: pm: pm-arm: Fix refcount leak in brcmstb_pm_probe
Summary
GSD-2022-1004822: soc: bcm: brcmstb: pm: pm-arm: Fix refcount leak in brcmstb_pm_probe. Affects Kernel versions >= 0b741b8234c86065fb6954d32d427b3f7e14756f, < 4f5877bdf7b593e988f1924f4c3df6523f80b39c. No fix is published. How to fix ↓
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Background
The Kernel package is an essential component of the Linux operating system. It provides the core functionality and acts as a bridge between the hardware and software layers. The bcm (Broadcom) subsystem within the Kernel package includes support for various Broadcom SoCs (System-on-Chips), including brcmstb (Broadcom Set-Top Box) devices. The pm-arm (Power Management for ARM) module within the brcmstb subsystem is responsible for managing power-related operations on ARM-based systems. However, a vulnerability has been identified in the brcmstb_pm_probe function, which can lead to a refcount leak.
Vulnerability Detail
The vulnerability in the brcmstb_pm_probe function of the pm-arm module allows for a refcount leak. This can result in incorrect reference counting, leading to resource leaks and potential memory corruption. An attacker could potentially exploit this vulnerability to cause a denial-of-service (DoS) condition or execute arbitrary code with elevated privileges. The vulnerability was introduced in version v4.15 of the Linux Kernel and has been fixed in version v4.19.250.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability. It is advised to apply the fix by updating the Kernel package to the latest version.
Conclusion
In conclusion, the vulnerability in the brcmstb_pm_probe function of the pm-arm module in the Kernel package can lead to a refcount leak, potentially resulting in resource leaks and memory corruption. It is crucial to update the Kernel package to version v4.19.250 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to resource leaks and potential memory corruption. An attacker could exploit this to cause a denial-of-service (DoS) condition or execute arbitrary code with elevated privileges.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and Vulert will analyze it for any open-source vulnerabilities, including this one.
Yes, a patch has been released in version v4.19.250 of the Linux Kernel. It is recommended to update to this version or later to fix the vulnerability.
While there is no specific workaround mentioned for this vulnerability, it is generally recommended to follow security best practices, such as restricting access to vulnerable systems, implementing network-level protections, and monitoring for any suspicious activity.
You can refer to the vulnerability details in the GSD database (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1004xxx/GSD-2022-1004822.json) for more information about this vulnerability, including its impact, affected versions, and the fix.
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