Vulnerability in Kernel package: aio: fix mremap after fork null-deref
Summary
GSD-2023-1002420: aio: fix mremap after fork null-deref. Affects Kernel versions >= e4a0d3e720e7e508749c1439b5ba3aff56c92976, < 808f1e4b5723ae4eda724d2ad6f6638905eefd95. 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 aio (Asynchronous I/O) subsystem within the Kernel allows for efficient handling of I/O operations. However, a vulnerability has been discovered in the aio subsystem that can lead to a null-dereference after a fork operation.
Vulnerability Detail
The vulnerability arises due to a null-dereference issue in the mremap function within the aio subsystem. This issue can be exploited by an attacker to cause a denial-of-service condition or potentially execute arbitrary code with elevated privileges. The vulnerability was introduced in version v3.19 of the Linux Kernel and has been fixed in version v4.14.306.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned for this vulnerability.
Conclusion
The vulnerability in the Kernel package's aio subsystem can lead to a null-dereference issue, potentially resulting in a denial-of-service or arbitrary code execution. It is crucial to update the Linux Kernel package to version v4.14.306 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a denial-of-service condition or potential execution of arbitrary code with elevated privileges.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the playground will provide real-time alerts for open-source vulnerabilities.
At the time of this report, no known exploits have been reported for this vulnerability.
The recommended mitigation is to update the Linux Kernel package to the fixed version v4.14.306 or later.
You can find more information about this vulnerability in the GSD-2023-1002420 entry of the GSD Database at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2023/1002xxx/GSD-2023-1002420.json
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