PT-2025-39140 · Linux+7 · Linux Kernel+7
Published
2025-08-28
·
Updated
2026-05-07
·
CVE-2025-39883
CVSS v3.1
7.1
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.10.0-rc1-00195-g148743902568
Description
The Linux kernel contains a flaw in the memory management subsystem related to handling poisoned memory pages. Specifically, the
unpoison memory function incorrectly checks page flags, triggering a kernel panic when attempting to unpoison memory. This occurs when pfn to online page() returns NULL, indicating an offline memory block. The issue is reproducible by taking memory offline, obtaining its page frame number (PFN), and then attempting to unpoison it via the /sys/kernel/debug/hwpoison/unpoison-pfn interface. The root cause is that VM BUG ON PAGE(PagePoisoned(page)) is triggered on an uninitialized page.Recommendations
Update to a version newer than 6.10.0-rc1-00195-g148743902568.
Exploit
Fix
Out of bounds Read
Use After Free
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Related Identifiers
Affected Products
Almalinux
Centos
Debian
Linuxmint
Linux Kernel
Red Hat
Rocky Linux
Ubuntu