CVE-2024-26962: linux-libc-dev - Deadlock in dm-raid456 while io concurrent with reshape
Summary
CVE-2024-26962: In the Linux kernel, the following vulnerability has been resolved: dm-raid456, md/raid456: fix a deadlock for dm-raid456 while io concurrent with reshape For raid456, if reshape is still in progress, then IO across resh... Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
linux-libc-dev is a package in the Linux kernel that provides the C library headers for the Linux system. It is an essential component for building and compiling applications on Linux. The package contains various header files that define the interfaces between the kernel and user-space applications. This vulnerability affects the linux-libc-dev package version 6.1.90-1.
Vulnerability Detail
The vulnerability in linux-libc-dev, identified as CVE-2024-26962, is related to the dm-raid456 and md/raid456 components. When a reshape operation is in progress, IO operations across the reshape position can cause a deadlock in dm-raid456. This deadlock occurs under specific conditions, such as when the array is read-only, MD_RECOVERY_WAIT is set, or MD_RECOVERY_FROZEN is set. The issue was resolved with a commit that prevents IO operations from waiting for reshape when it cannot make progress. However, this fix caused the dm-raid test shell/lvconvert-raid-reshape.sh to hang, indicating that reshape cannot make progress in certain cases.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been provided for this vulnerability.
Conclusion
The vulnerability in linux-libc-dev can lead to a deadlock in dm-raid456 when IO operations are concurrent with a reshape operation. It is crucial to update the linux-libc-dev package to the latest version that includes the fix for this vulnerability. Regularly updating the system and following security best practices are essential to mitigate the risk of such vulnerabilities. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
linux-libc-dev is a package in the Linux kernel that provides the C library headers for the Linux system. It is used for building and compiling applications on Linux.
dm-raid456 and md/raid456 are components in the Linux kernel that handle RAID functionality. They are responsible for managing RAID arrays and performing various operations on them.
The deadlock in dm-raid456 can occur when the array is read-only, MD_RECOVERY_WAIT is set, or MD_RECOVERY_FROZEN is set.
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No specific workaround has been provided for this vulnerability. It is recommended to update the linux-libc-dev package to the latest version that includes the fix.
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