PT-2025-27291 · Linux+9 · Linux Kernel+9
Published
2025-06-06
·
Updated
2026-05-26
·
CVE-2025-38085
CVSS v2.0
5.7
Medium
| Vector | AV:L/AC:L/Au:S/C:P/I:P/A:C |
Name of the Vulnerable Software and Affected Versions:
Linux kernel (affected versions not specified)
Description:
A race condition exists between
huge pmd unshare() and GUP-fast in the Linux kernel. The huge pmd unshare() function drops a reference on a page table that may have been shared across processes, potentially turning it into a normal page table used in another process. This could lead to GUP-fast walking the page tables of another process, resulting in unexpected behavior. Although no immediate kernel memory corruption is apparent, the issue is unusual and has been fixed with an explicit broadcast IPI through tlb remove table sync one().Recommendations:
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Information Disclosure
Race Condition
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Related Identifiers
Affected Products
Almalinux
Centos
Debian
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu