CVE-2024-26900: Linux Kernel md: kmemleak of rdev->serial Vulnerability Resolved

The Linux kernel is a crucial component of the operating system responsible for various tasks. Recently, a vulnerability in the Linux kernel has been discovered and resolved. This post will cover the details of the vulnerability, code snippet, and links to original references.

Vulnerability Details

A memory leak vulnerability has been found in the Linux kernel's "md" (Multiple Device) component. This issue is related to the kmemleak of the "rdev->serial" object, which could lead to memory corruption or other system instability issues. The CVE assigned to this vulnerability is CVE-2024-26900.

The vulnerability can be observed in the following code snippet

if (kobject_add() is fail in bind_rdev_to_array(), 'rdev->serial' will be
alloc not be freed, and kmemleak occurs.

The issue occurs when kobject_add() fails in bind_rdev_to_array(). In such a case, the memory allocated for rdev->serial would not be freed, causing a kmemleak (kernel memory leak).

Exploit Details

This vulnerability, if exploited, could lead to memory corruption or other system instability issues. Currently, there is no known exploit code available. However, as a responsible user, you should always update your Linux kernel to the latest version, which includes fixes for this and other vulnerabilities.

Original References

This vulnerability has been resolved by the Linux kernel community, and the fix has been committed to the source code repository. You can find the source code patch and more details about the issue at the following links:

1. Linux kernel source code commit
2. LWN discussion on the vulnerability

Conclusion

In conclusion, it is crucial to stay up-to-date with the latest security updates for your Linux kernel and operating system to protect your system from potential exploitation. The Linux kernel community is vigilant in identifying and fixing vulnerabilities, such as CVE-2024-26900, ensuring the stability and security of the open-source operating system.

Timeline

Published on: 04/17/2024 11:15:10 UTC
Last modified on: 06/27/2024 14:15:13 UTC