PT-2024-10416 · Linux+7 · Linux Kernel+7
Oliver Sang
·
Published
2024-08-20
·
Updated
2025-09-29
·
CVE-2024-47696
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/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 vulnerability in the Linux kernel's RDMA/iwcm component. This vulnerability can lead to a denial of service. The problem arises when the function
flush workqueue is invoked to flush the work queue iwcm wq, which was created without the flag WQ MEM RECLAIM. This can cause a deadlock if the current process is reclaiming memory or running on a workqueue without the WQ MEM RECLAIM flag. Technical details include the involvement of functions such as destroy cm id and flush workqueue, and variables like iwcm wq.Recommendations
To resolve the issue, update the Linux kernel to version 6.6.58 or later. As a temporary workaround, consider restricting access to the vulnerable
iwcm module to minimize the risk of exploitation. Avoid using the iwcm wq work queue in critical operations until the issue is resolved.Exploit
Fix
Use After Free
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu