PT-2024-36995 · Linux · Linux Kernel
Published
2024-12-28
·
Updated
2025-02-14
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CVE-2024-56686
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to a race condition in the ext4 file system's buffer head read fault injection. This occurs because the completion of buffer head read and the buffer head fault injection are not atomic, leading to the uptodate flag being cleared on normally used buffer heads in race conditions. The problem arises when the
ext4 read inode bitmap function attempts to read an inode bitmap, and the ext4 simulate fail bh function clears the buffer uptodate flag, causing a warning to be reported. The estimated number of potentially affected devices is not provided, and there is no information about real-world incidents where this issue was exploited.Recommendations
To resolve the issue, the fix involves passing the result of fault injection into the bh read function, simulating faults within the bh read function itself. This requires adding an extra parameter to the bh read functions that need fault injection.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
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Related Identifiers
Affected Products
Linux Kernel