CVE-2023-2019
kernel: netdevsim: fib: reference count leak on route deletion failure
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 13, 2023
Updated · November 21, 2025
Description
A flaw was found in the Linux kernel's netdevsim device driver within the scheduling of events. This issue results from improper management of a reference count. This flaw allows an attacker to create a denial of service condition on the system.
Statement
Red Hat Enterprise Linux 6 and 7 are not affected by this flaw as they did not ship the netdevsim device driver. Red Hat Enterprise Linux 8 is not affected as it did not include the upstream commit that introduced this flaw (0ae3eb7 "netdevsim: fib: Perform the route programming in a non-atomic context").
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 · 5.3CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H
CWE-911 · Improper Update of Reference Count