PT-2025-43085 · Linux+1 · Linux Kernel+1
Published
2022-12-05
·
Updated
2025-12-04
·
CVE-2022-50575
CVSS v2.0
4.6
Medium
| Vector | AV:L/AC:L/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains an issue within the xen/privcmd component, specifically in the
privcmd ioctl mmap resource() function. The issue arises because the kdata.num variable, which is controlled by the user, can be used to request a memory allocation larger than or equal to MAX ORDER. When this occurs, the kcalloc() function fails, resulting in a stack trace and a warning message in the system log (dmesg). The fix involves adding the GFP NOWARN flag to avoid the allocation warning. This issue was identified through static analysis using smatch.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Resource Exhaustion
Improper Resource Release
Allocation of Resources Without Limits
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Related Identifiers
Affected Products
Linux Kernel
Suse