Vulnerability in Kernel Package: bpf: Fix signed bounds propagation after mov32
Summary
GSD-2021-1002728: bpf: Fix signed bounds propagation after mov32. Affects Kernel versions >= 3f50f132d8400e129fc9eb68b5020167ef80a244, < f77d7a35d4913e4ab27abb36016fbfc1e882a654. 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 an interface between the hardware and software layers. The bpf (Berkeley Packet Filter) subsystem within the Kernel allows users to define and execute custom programs for network packet filtering and processing. This vulnerability specifically affects the signed bounds propagation after mov32 operation in the bpf subsystem.
Vulnerability Detail
The vulnerability arises from a flaw in the signed bounds propagation after mov32 operation in the bpf subsystem. It was introduced in version v5.7 of the Linux Kernel and fixed in version v5.15.11. The impact and attack plausibility of this vulnerability have not been proven yet. However, if successfully exploited, it could lead to security breaches and potential unauthorized access to sensitive information. The vulnerability is tracked under the ID GSD-2021-1002728.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No workaround has been provided for this vulnerability.
Conclusion
In conclusion, the Kernel package in Linux is vulnerable to a flaw in the signed bounds propagation after mov32 operation in the bpf subsystem. It is crucial to update the Kernel package to version v5.15.11 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
If successfully exploited, this vulnerability could lead to security breaches and potential unauthorized access to sensitive information.
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 and the Vulert Playground will analyze it in real-time.
No known exploit has been reported for this vulnerability at the moment.
The recommended mitigation is to update the Linux Kernel package to version v5.15.11 or later.
You can find more information about this vulnerability in the GSD-2021-1002728 JSON report available at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002728.json
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