Corrupted Packet Vulnerability in Linux Kernel - CVE-2022-49972
Summary
CVE-2022-49972: In the Linux kernel, the following vulnerability has been resolved: xsk: Fix corrupted packets for XDP_SHARED_UMEM Fix an issue in XDP_SHARED_UMEM mode together with aligned mode where packets are corrupted for the secon... Affects linux versions < 6.0.2-1. Fixed in 6.0.2-1. 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 Linux kernel is a core component of many operating systems, providing essential services for hardware and software interaction. It is known for its robustness, flexibility, and extensive support for various hardware architectures. However, vulnerabilities can arise, impacting system performance and security. CVE-2022-49972 specifically affects the XDP_SHARED_UMEM mode, which is used for high-performance packet processing.
Vulnerability Detail
CVE-2022-49972 is a vulnerability in the Linux kernel that affects the XDP_SHARED_UMEM mode when used with aligned mode. The issue arises when packets are corrupted for the second and subsequent sockets bound to the same umem, while the first socket remains unaffected. This occurs because the initialization of DMA addresses for the pre-populated xsk buffer pool entries is only performed for the first socket, leading to potential data integrity issues and performance degradation.
How To Fix
Minimum fixed version
6.0.2-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. The best course of action is to apply the patch as soon as it becomes available.
Conclusion
CVE-2022-49972 is a significant vulnerability in the Linux kernel that can lead to packet corruption in specific configurations. Users are advised to update their kernel to the patched version 6.0.2-1 to ensure system integrity and performance. Monitoring tools like Vulert can assist in identifying vulnerabilities in your software.
See every vulnerability recorded for linux →
FAQ
CVE-2022-49972 is a vulnerability in the Linux kernel that causes packet corruption in XDP_SHARED_UMEM mode for sockets beyond the first one bound to the same umem.
This vulnerability can lead to data integrity issues and performance degradation in packet processing applications that rely on the affected kernel functionality.
If you are using a version of the Linux kernel prior to 6.0.2-1, your system may be vulnerable. You can check your kernel version using the command 'uname -r'.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using just a manifest file like package-lock.json. Visit https://vulert.com for more information.
While there are no specific workarounds, it is crucial to plan for an update to mitigate the risks associated with this vulnerability.
Related vulnerabilities
Recent vulnerabilities recorded for linux.
