PT-2025-54094 · Linux+2 · Linux Kernel+2

Published 2023-04-03 · Updated 2026-02-12 · CVE-2023-54265

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

AV:L/AC:L/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains a flaw within the IPv6 implementation, specifically in the ip6 make skb() function. This issue stems from an uninitialized variable access when handling ICMPv6 headers in the context of SOCK RAW sockets. The problem arises because the icmp6hdr is not always located within the linear region of the skb (socket buffer), leading to an attempt to directly access icmp6 hdr(skb)->icmp6 type with an uninitialized value. This can lead to unpredictable behavior and potentially system instability. A local variable icmp6 type is used to carry the correct value in different scenarios to address this.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-457

Related Identifiers

BDU:2026-01200

CVE-2023-54265

RHSA-2023:6583

RHSA-2023:7077

SUSE-SU-2026:0473-1

Affected Products

Centos

Linux Kernel

Red Hat

References · 332

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54265.json · Exploit
• https://osv.dev/vulnerability/CVE-2023-54265 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-54265 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-54265 · Security Note
• https://cve.org/CVERecord?id=CVE-2023-54265 · Security Note
• https://ubuntu.com/security/CVE-2023-54265 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-54265 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-54265 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0473-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-54265 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01200 · Security Note
• https://suse.com/security/cve/CVE-2023-54282 · Note
• https://bugzilla.suse.com/1256650 · Note
• https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.313 · Note
• https://suse.com/security/cve/CVE-2025-71087 · Note