net-timestamp: Convert sk->sk_tskey to atomic_t in Kernel
Summary
GSD-2022-1000803: net-timestamp: convert sk->sk_tskey to atomic_t. Affects Kernel versions >= 09c2d251b70723650ba47e83571ff49281320f7c, < ff999198ec2149a6b83edb083293c91ec027f56f. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Kernel is a fundamental component of the Linux operating system that provides core services and manages system resources. It is responsible for facilitating communication between hardware and software components. The net-timestamp module within the Kernel handles network timestamping, which involves assigning timestamps to network packets for various purposes. One of the variables used in this module, sk->sk_tskey, is vulnerable to a security issue.
Vulnerability Detail
The vulnerability in net-timestamp arises from the use of a non-atomic variable, sk->sk_tskey, which is not protected against concurrent access. This can lead to race conditions and potential security vulnerabilities. An attacker could exploit this vulnerability to manipulate network timestamps, potentially causing disruptions or bypassing security measures. The vulnerability was introduced in version v3.17 of the Linux Kernel and has been fixed in version v5.15.26.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a workaround, users can apply patches or backports provided by the Linux distribution they are using. These patches may address the vulnerability without requiring a full Kernel update. It is advisable to consult the documentation or support channels of the specific Linux distribution for guidance on applying patches or backports.
Conclusion
The net-timestamp vulnerability in the Kernel can be mitigated by updating to version v5.15.26 or later. Applying patches or backports provided by Linux distributions can also serve as a temporary workaround. It is crucial to address this vulnerability to ensure the security and stability of systems. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The vulnerability in net-timestamp could potentially be exploited by attackers to manipulate network timestamps, leading to disruptions or bypassing of security measures.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will analyze the dependencies and alert you if any vulnerabilities, including this one, are found.
There are no known instances of this vulnerability being exploited in the wild. However, it is still important to apply the necessary fixes to ensure the security and stability of your system.
As a temporary measure, you can apply patches or backports provided by your Linux distribution. These may address the vulnerability without requiring a full Kernel update. However, it is recommended to update to the latest stable version of the Kernel as soon as possible.
You can find more information about this vulnerability, including technical details and the fix, in the official Linux Kernel source code repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/).
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
