PT-2026-6170 · Linux · Linux Kernel
Published
2026-01-01
·
Updated
2026-05-26
·
CVE-2026-23100
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel’s hugetlb subsystem contains an issue where
hugetlb pmd shared() did not correctly detect shared PMD tables. This occurred because the code switched to using an independent shared count instead of the page count, and the hugetlb pmd shared() function was not updated to reflect this change. As a result, page migration operations like mbind() or migrate pages() could incorrectly migrate folios mapped into shared PMD tables, leading to inaccurate accounting in smaps and potentially incorrect settings in the pagemap interface. The issue was addressed by properly using ptdesc pmd is shared() in hugetlb pmd shared().Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Linux Kernel