PT-2025-36319 · Linux+4 · Linux Kernel+4
Hch
·
Published
2025-06-27
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Updated
2026-04-08
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CVE-2025-39725
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 contains an issue within the
shrink folio list() function related to handling hardware-poisoned large folios. Specifically, the function fails to correctly handle large folios that have been marked as hardware-poisoned, potentially leading to a null pointer dereference and a kernel panic during memory reclamation. This occurs when memory reclamation for a large folio races with a memory failure, triggering a bug when unmap poisoned folio() attempts to handle the large folio. The issue arises from the inability of unmap poisoned folio() to handle large folios directly, and the failure to split the huge page table entry (PMD) before attempting unmapping. While unlikely in typical scenarios, the race condition can lead to system instability.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Improper Resource Release
NULL Pointer Dereference
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Related Identifiers
Affected Products
Astra Linux
Linuxmint
Linux Kernel
Red Os
Ubuntu