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Fencer Vulns
medium 5.5

CVE-2023-3022 json

A flaw was found in the IPv6 module of the Linux kernel.

published 2023-06-19 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-43714

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 9%
public exploits
0
none known

Summary

A flaw was found in the IPv6 module of the Linux kernel. The arg.result was not used consistently in fib6_rule_lookup, sometimes holding rt6_info and other times fib6_info. This was not accounted for in other parts of the code where rt6_info was expected unconditionally, potentially leading to a kernel panic in fib6_rule_suppress.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 5.2.6-1

debian advisories DEBIAN-CVE-2023-3022

  • perf rhev hypervisor 4.4, RHEL 8.6 EUS 4.18.0-372.46.1.el8_6
  • kernel-rt RHEL 8 4.18.0-372.9.1.rt7.166.el8
  • kernel-rt-kvm RHEL 8 4.18.0-372.9.1.rt7.166.el8
  • kernel-rt-core RHEL 8 4.18.0-372.9.1.rt7.166.el8
  • kernel-rt-modules RHEL 8 4.18.0-372.9.1.rt7.166.el8
  • kernel-rt-debug-kvm RHEL 8 4.18.0-372.9.1.rt7.166.el8
  • kernel-rt-debug-core RHEL 8 4.18.0-372.9.1.rt7.166.el8
  • kernel-rt-debug-modules RHEL 8 4.18.0-372.9.1.rt7.166.el8

red hat advisories RHSA-2023:1130RHSA-2022:1975

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-3022 updated cvss 5.9

kernel: IPv6: panic in fib6_rule_suppress when fib6_rule_lookup fails

  • Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-core, kernel-tools, python3-perf, +17 more
    affected: no fix available
  • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.46.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.46.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.46.1.el8_6 Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.46.1.el8_6, kernel 4.18.0-372.46.1.el8_6, bpftool 4.18.0-372.46.1.el8_6, kernel-core 4.18.0-372.46.1.el8_6, kernel-tools 4.18.0-372.46.1.el8_6, python3-perf 4.18.0-372.46.1.el8_6, +15 more
    fixed: vendor fix RHSA-2023:1130
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-372.9.1.rt7.166.el8, kernel-rt-kvm 4.18.0-372.9.1.rt7.166.el8, kernel-rt-core 4.18.0-372.9.1.rt7.166.el8, kernel-rt-modules 4.18.0-372.9.1.rt7.166.el8, kernel-rt-debug-kvm 4.18.0-372.9.1.rt7.166.el8, kernel-rt-debug-core 4.18.0-372.9.1.rt7.166.el8, +4 more Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-372.9.1.rt7.166.el8, kernel-rt-core 4.18.0-372.9.1.rt7.166.el8, kernel-rt-modules 4.18.0-372.9.1.rt7.166.el8, kernel-rt-debug-core 4.18.0-372.9.1.rt7.166.el8, kernel-rt-debug-modules 4.18.0-372.9.1.rt7.166.el8, kernel-rt-modules-extra 4.18.0-372.9.1.rt7.166.el8, +2 more
    fixed: vendor fix RHSA-2022:1975
  • Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.46.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.46.1.el8_6
    fixed: vendor fix RHSA-2023:1130
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • n/a Linux Kernel (IPv6)

Classification

Weakness
  • CWE-843 Access of Resource Using Incompatible Type
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.