CVE-2023-52991
kernel: net: fix NULL pointer in skb_segment_list
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 27, 2025
Updated · July 22, 2026
Description
A flaw was found in the Linux kernel's net subsystem. A NULL pointer dereference can be triggered when a specific sequence of network events occurs due to an improper check, resulting in a denial of service.
Statement
This issue has been fixed in Red Hat Enterprise Linux 8.9 and 9.3 via RHSA-2023:7077 [1] and RHSA-2023:6583 [2], respectively.
[1]. https://access.redhat.com/errata/RHSA-2023:7077
[2]. https://access.redhat.com/errata/RHSA-2023:6583
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-476 · NULL Pointer Dereference