CVE-2024-40958
kernel: netns: Make get_net_ns() handle zero refcount net
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 12, 2024
Updated · October 31, 2026
Description
A vulnerability was found in the Linux kernel's netns in the get_net_ns() function. This vulnerability occurs when a network namespace reference count is zero, leading to a use-after-free condition that can trigger a kernel panic.
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
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
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-416 · Use After Free