CVE-2024-39496

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to a use-after-free vulnerability in the btrfs load zone info() function, which can be triggered by a race condition with a device replace operation. This happens because the function extracts a device from the chunk map into a local variable and then uses the device while not under the protection of the device replace rwsem. If a device replace operation occurs while the device is being extracted and the device is the source of the replace operation, a use-after-free can be triggered if the replace operation finishes and frees the device before the function finishes using it. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.