Vulnerability in Kernel: tty_buffer Softlockup Issue in flush_to_ldisc
Summary
UVI-2021-1002337: tty: tty_buffer: Fix the softlockup issue in flush_to_ldisc. Affects Kernel versions < 5c34486f04700f1ba04907231dce0cc2705c2d7d. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functions and services to enable the proper functioning of the system. One of its components, tty_buffer, handles input and output operations for terminal devices. However, a vulnerability has been discovered in the tty_buffer module that can lead to a softlockup issue in the flush_to_ldisc function.
Vulnerability Detail
The vulnerability in the tty_buffer module of the Kernel can result in a softlockup issue in the flush_to_ldisc function. This issue can potentially cause the system to become unresponsive or freeze, leading to a denial-of-service condition. The vulnerability has been identified and fixed in the Linux Kernel version v5.15.5 by commit 5c34486f04700f1ba04907231dce0cc2705c2d7d.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround available for this vulnerability. It is crucial to apply the fix by updating the Linux Kernel to the patched version.
Conclusion
The vulnerability in the Kernel's tty_buffer module can lead to a softlockup issue, causing the system to become unresponsive. It is crucial to update the Linux Kernel to version v5.15.5 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a softlockup issue in the flush_to_ldisc function, causing the system to become unresponsive or freeze.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it in real-time.
At the time of this report, there is no known exploit for this vulnerability. However, it is essential to apply the fix to prevent any potential exploitation.
No, this vulnerability does not have a remote exploit vector. An attacker would need local access to the system to exploit it.
The only recommended solution is to update the Linux Kernel to the patched version. No alternative mitigations have been identified.
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