Memory Leak Vulnerability in x86/kexec
Summary
GSD-2022-1003419: x86/kexec: fix memory leak of elf header buffer. Affects Kernel versions < 8765a423a87d74ef24ea02b43b2728fe4039f248. No fix is published. How to fix ↓
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Background
The x86/kexec is a component of the Linux Kernel that provides a mechanism for booting a new kernel from the currently running kernel. It is commonly used for kernel debugging, testing, and recovery purposes. The vulnerability identified in this component involves a memory leak issue related to the handling of ELF header buffers. This vulnerability could potentially be exploited by an attacker to exhaust system memory resources, leading to a denial-of-service condition or other security implications.
Vulnerability Detail
The vulnerability in x86/kexec arises from a memory leak in the handling of ELF header buffers. When processing certain ELF headers, the component fails to release the allocated memory, resulting in a gradual accumulation of memory over time. This can eventually lead to memory exhaustion, impacting system performance and stability. Although the exact attack vectors and potential consequences have not been proven, the presence of a memory leak vulnerability poses a significant risk to the affected systems.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
The memory leak vulnerability in x86/kexec can be mitigated by updating the Linux Kernel to the patched version. It is crucial to promptly apply the recommended fix to ensure proper memory management and prevent potential exploitation. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
x86/kexec is a component of the Linux Kernel that allows booting a new kernel from the currently running kernel. It is commonly used for kernel debugging, testing, and recovery purposes.
The vulnerability can lead to memory exhaustion, potentially causing a denial-of-service condition or other security implications.
To fix this vulnerability, update the Linux Kernel to version v5.15.46 or later by applying commit 8765a423a87d74ef24ea02b43b2728fe4039f248 from the official Linux Kernel repository.
No specific workarounds have been identified for this vulnerability. Updating to the patched version is the recommended solution.
For more details about this vulnerability, refer to the vulnerability ID GSD-2022-1003419 in the GSD database: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1003xxx/GSD-2022-1003419.json
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