PT-2024-28514 · Linux+5 · Linux Kernel+5
Published
2024-05-07
·
Updated
2026-05-26
·
CVE-2024-39508
CVSS v3.1
4.7
Medium
| Vector | AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to potential data races in the io uring/io-wq component of the Linux kernel. The structure io worker->flags may be accessed through various data paths, leading to concurrency issues. When KCSAN is enabled, it reveals data races occurring in io worker handle work and io wq activate free worker functions. These races involve writes and reads to the same memory location by different tasks running on different CPUs. To mitigate this, the code is refactored to use atomic operations such as set bit(), test bit(), and clear bit() instead of basic "and" and "or" operations, ensuring thread-safe manipulation of worker flags.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Time Of Check To Time Of Use
Race Condition
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Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Red Hat
Suse
Ubuntu