PT-2024-7572 · Linux+7 · Linux Kernel+7
Zheng Wang
·
Published
2024-08-25
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Updated
2025-09-29
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CVE-2024-49981
CVSS v3.1
7.0
High
| Vector | AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.6.58
Description
The issue is related to a use after free bug in the
venus remove function due to a race condition. This bug can be exploited to impact the confidentiality, integrity, and availability of protected information. The vulnerability is caused by the core->work being bound with venus sys error handler in venus probe, and the code using core->sys err done to make sync work. The core->work is started in venus event notify. If venus remove is called, there might be an unfinished work, leading to a possible sequence where the hdev is used after being freed.Recommendations
For Linux kernel versions prior to 6.6.58, update to version 6.6.58 or later to resolve the issue.
As a temporary workaround, consider disabling the
venus remove function until a patch is available.
Restrict access to the vulnerable venus sys error handler function to minimize the risk of exploitation.
Avoid using the core->work in the affected venus probe function until the issue is resolved.Exploit
Fix
Use After Free
Race Condition
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Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu