netfilter: nf_tables: Fix oversized kvmalloc() calls in Kernel
Summary
GSD-2021-1001706: netfilter: nf_tables: Fix oversized kvmalloc() calls. Affects Kernel versions < 14492ff9638796c75b09ee1b470d6a5a10994b1a. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionality and interfaces with hardware devices. It manages system resources, facilitates communication between software and hardware, and enforces security policies. The nf_tables module within the Kernel is responsible for packet filtering and network address translation. It allows administrators to define rules for network traffic and perform various network-related operations. However, a vulnerability has been discovered in the nf_tables module that involves oversized kvmalloc() calls.
Vulnerability Detail
The vulnerability in the nf_tables module arises from the use of oversized kvmalloc() calls. This can lead to memory allocation failures and potential memory corruption issues. An attacker could potentially exploit this vulnerability to cause a denial-of-service (DoS) condition or execute arbitrary code with elevated privileges. The impact and attack plausibility of this vulnerability have not been proven yet. The vulnerability has been fixed in Linux Kernel version v5.14.10 by commit 14492ff9638796c75b09ee1b470d6a5a10994b1a.
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.
Conclusion
The nf_tables module in the Kernel is vulnerable to oversized kvmalloc() calls, which can result in memory allocation failures and potential memory corruption. It is crucial to update the Linux Kernel to version v5.14.10 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability could potentially lead to a denial-of-service (DoS) condition or arbitrary code execution with elevated privileges.
There is no information available regarding exploitation of this vulnerability in the wild.
The vulnerability affects versions of the Linux Kernel prior to v5.14.10.
Yes, the vulnerability has been fixed in Linux Kernel version v5.14.10 by commit 14492ff9638796c75b09ee1b470d6a5a10994b1a.
More information about this vulnerability can be found in the source database: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1001xxx/GSD-2021-1001706.json
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