PT-2021-2462 · Linux+5 · Linux Kernel+5
Syzbot
+1
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Published
2021-03-10
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Updated
2023-05-17
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CVE-2021-29265
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 versions prior to 5.11.7
Description
The issue is related to the implementation of the
usbip sockfd store function in the Linux kernel, which allows attackers to cause a denial of service due to race conditions during an update of the local and shared status. This can lead to a general protection fault (GPF). The vulnerability is caused by the use of a shared resource with incorrect synchronization.Recommendations
For Linux kernel versions prior to 5.11.7, update to version 5.11.7 or later to resolve the issue. As a temporary workaround, consider disabling the
usbip sockfd store function in the drivers/usb/usbip/stub dev.c file until a patch is available. Restrict access to the vulnerable stub dev.c module to minimize the risk of exploitation.Exploit
Fix
DoS
Race Condition
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Linuxmint
Linux Kernel
Suse
Ubuntu