PT-2022-4973 · Linux+8 · Linux Kernel+8
Jann Horn
·
Published
2022-07-06
·
Updated
2023-08-14
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CVE-2022-39188
CVSS v2.0
6.8
Medium
| Vector | AV:N/AC:L/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.19
Description
The issue is related to a race condition in the Linux kernel, specifically in the unmap mapping range function, which can lead to a situation where a device driver frees a page while it still has stale TLB entries. This occurs in situations with VM PFNMAP VMAs, potentially allowing an attacker to cause a denial of service.
Recommendations
For Linux kernel versions prior to 5.19, update to version 5.19 or later to resolve the issue. As a temporary workaround, consider restricting access to the unmap mapping range function to minimize the risk of exploitation.
Fix
Race Condition
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Suse
Ubuntu