CVE-2026-93074
kernel: dax/fsdev: use __va(phys) for kaddr in direct_access
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 20, 2026
Description
A flaw was found in the Linux kernel's dax/fsdev component. An error in calculating kernel virtual addresses within the __fsdev_dax_direct_access() function, specifically for multi-range devices with physical gaps, can lead to incorrect memory addressing. This issue could result in memory corruption, potentially affecting system stability or leading to unintended memory access.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-787 · Out-of-bounds Write