CVE-2026-63973
kernel: net: mana: Add NULL guards in teardown path to prevent panic on attach failure
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 19, 2026
Updated · October 13, 2026
Description
A flaw was found in the Linux kernel's mana network driver. During certain error handling scenarios, specifically when network queue allocation fails, the driver attempts to access memory that has already been freed. This can lead to a NULL pointer dereference, causing the system to crash and resulting in a Denial of Service (DoS).
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-476 · NULL Pointer Dereference