PT-2025-15403 · Linux+5 · Linux Kernel+5
Published
2025-04-08
·
Updated
2026-04-20
·
CVE-2025-22015
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:
A vulnerability in the Linux kernel has been resolved, related to the migration of shared memory (shmem) pages. The issue occurs when a shmem folio is in both page cache and swap cache at the same time, causing xarray multi-index entry corruption. This happens because
folio test swapbacked() is used to determine the number of xarray entries to update, which conflates shmem in page cache and shmem in swap cache cases. The fix involves using folio test swapcache() to determine whether xarray is storing swap cache entries or not, to choose the right number of xarray entries to update.Recommendations:
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Debian
Linuxmint
Linux Kernel
Suse
Ubuntu