CVE-2026-43389

medium Red Hat
EPSS Score
0.0%
Exploitation probability in 30 days
Top 95% most likely to be exploited
Published: May 8, 2026 (6 days ago)
Last Modified: May 8, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the `memfd_luo` subsystem of the Linux kernel. When using `memfd` preservation with Live Update Operations (LUO), the kernel may incorrectly mark a memory page (folio) as clean even if it contains user data. This can lead to data loss, as the kernel might reclaim these 'dirty' folios under memory pressure, resulting in the loss of user data.

CWE

CWE-821

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org