high 7.1

CVE-2024-26673 json

netfilter: nft_ct: sanitize layer 3 and 4 protocol number in custom expectations

published 2024-04-02 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-23935

cvss: 7.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits: 0; none known

In the Linux kernel, the following vulnerability has been resolved:

- Disallow families other than NFPROTO_{IPV4,IPV6,INET}. - Disallow layer 4 protocol with no ports, since destination port is a mandatory attribute for this object.

Patch / fix

fixed in 1 distros 5 links 7

Linux Linux 5.4.269, 5.10.210, 5.15.149, 6.1.77, 6.6.16, 6.7.4, 6.8

debian ubuntu red hat suse almalinux

linux Debian 12 6.1.82-1
linux Debian 14, Debian 13 6.7.7-1

debian advisories DEBIAN-CVE-2024-26673

linux Ubuntu 20.04 LTS 5.4.0-181.201
linux Ubuntu 22.04 LTS 5.15.0-106.116
linux-aws Ubuntu 20.04 LTS 5.4.0-1124.134
linux-aws Ubuntu 22.04 LTS 5.15.0-1061.67
linux-gcp Ubuntu 20.04 LTS 5.4.0-1128.137
linux-gcp Ubuntu 22.04 LTS 5.15.0-1059.67
linux-gke Ubuntu 22.04 LTS 5.15.0-1058.63
linux-ibm Ubuntu 20.04 LTS 5.4.0-1071.76

ubuntu advisories UBUNTU-CVE-2024-26673

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

kernel RHEL 9 5.14.0-427.18.1.el9_4
rv RHEL 9 5.14.0-427.18.1.el9_4
perf RHEL 9 5.14.0-427.18.1.el9_4
rtla RHEL 9 5.14.0-427.18.1.el9_4
bpftool RHEL 9 7.3.0-427.18.1.el9_4
libperf RHEL 9 5.14.0-427.18.1.el9_4
kernel-rt RHEL 9 5.14.0-427.18.1.el9_4
kernel-64k RHEL 9 5.14.0-427.18.1.el9_4

red hat advisories RHSA-2024:4415 RHSA-2024:4412 RHSA-2024:3461 RHSA-2024:3460 RHSA-2024:3306

kernel-rt Linux Micro 6.0 6.4.0-9.1
kernel-source-rt Linux Micro 6.0 6.4.0-9.1
kernel-source Linux Micro 6.0 6.4.0-18.1
kernel-default Linux Micro 6.0 6.4.0-18.1
kernel-kvmsmall Linux Micro 6.0 6.4.0-18.1
kernel-default-base Linux Micro 6.0 6.4.0-17.1.1.51
kernel-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.5.1
kernel-syms-rt Real Time Module 15 SP6, openSUSE Leap 15.6 6.4.0-150600.10.5.1

suse advisories SUSE-SU-2025:20028-1 SUSE-SU-2025:20008-1 SUSE-SU-2024:2973-1 SUSE-SU-2024:2203-1 SUSE-SU-2024:2135-1 SUSE-SU-2024:1663-1

kernel AlmaLinux 9 5.14.0-427.18.1.el9_4
rv AlmaLinux 9 5.14.0-427.18.1.el9_4
perf AlmaLinux 9 5.14.0-427.18.1.el9_4
rtla AlmaLinux 9 5.14.0-427.18.1.el9_4
bpftool AlmaLinux 9 7.3.0-427.18.1.el9_4
libperf AlmaLinux 9 5.14.0-427.18.1.el9_4
kernel-rt AlmaLinux 9 5.14.0-427.18.1.el9_4
kernel-64k AlmaLinux 9 5.14.0-427.18.1.el9_4

almalinux advisories ALSA-2024:3306

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-2024-26673 updated 2026-11-06 cvss 6.1

kernel: netfilter: nft_ct: sanitize layer 3 and 4 protocol number in custom expectations

Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
affected: no fix available
Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.67.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.67.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.67.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.67.1.el9_2
fixed: vendor fix RHSA-2024:3461
Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.18.1.el9_4, perf 5.14.0-427.18.1.el9_4, rtla 5.14.0-427.18.1.el9_4, kernel-devel-matched 5.14.0-427.18.1.el9_4, kernel-64k-devel-matched 5.14.0-427.18.1.el9_4, kernel-debug-devel-matched 5.14.0-427.18.1.el9_4, +6 more
fixed: vendor fix RHSA-2024:3306
Red Hat Enterprise Linux AppStream E4S (v.9.0) perf 5.14.0-70.105.1.el9_0, kernel-devel-matched 5.14.0-70.105.1.el9_0, kernel-debug-devel-matched 5.14.0-70.105.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.105.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.105.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.105.1.el9_0, +2 more
fixed: vendor fix RHSA-2024:4415
Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.67.1.el9_2, rtla 5.14.0-284.67.1.el9_2, kernel-devel-matched 5.14.0-284.67.1.el9_2, kernel-64k-devel-matched 5.14.0-284.67.1.el9_2, kernel-debug-devel-matched 5.14.0-284.67.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.67.1.el9_2, +5 more
fixed: vendor fix RHSA-2024:3461
Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.18.1.el9_4, kernel 5.14.0-427.18.1.el9_4, kernel-64k 5.14.0-427.18.1.el9_4, kernel-core 5.14.0-427.18.1.el9_4, kernel-tools 5.14.0-427.18.1.el9_4, python3-perf 5.14.0-427.18.1.el9_4, +28 more
fixed: vendor fix RHSA-2024:3306
Red Hat Enterprise Linux BaseOS E4S (v.9.0) kernel 5.14.0-70.105.1.el9_0, bpftool 5.14.0-70.105.1.el9_0, kernel-core 5.14.0-70.105.1.el9_0, kernel-tools 5.14.0-70.105.1.el9_0, python3-perf 5.14.0-70.105.1.el9_0, kernel-modules 5.14.0-70.105.1.el9_0, +14 more
fixed: vendor fix RHSA-2024:4415
Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.67.1.el9_2, kernel 5.14.0-284.67.1.el9_2, kernel-64k 5.14.0-284.67.1.el9_2, kernel-core 5.14.0-284.67.1.el9_2, kernel-tools 5.14.0-284.67.1.el9_2, python3-perf 5.14.0-284.67.1.el9_2, +28 more
fixed: vendor fix RHSA-2024:3461

show 5 more

Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.18.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.18.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.18.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.18.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.18.1.el9_4 Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.18.1.el9_4, kernel-rt-kvm 5.14.0-427.18.1.el9_4, kernel-rt-core 5.14.0-427.18.1.el9_4, kernel-rt-modules 5.14.0-427.18.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.18.1.el9_4, kernel-rt-debug-core 5.14.0-427.18.1.el9_4, +6 more
fixed: vendor fix RHSA-2024:3306
Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt 5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-kvm 5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-core 5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-modules 5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-debug-kvm 5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-debug-core 5.14.0-70.105.1.rt21.177.el9_0, +4 more Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt 5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-core 5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-modules 5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-debug-core 5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-debug-modules 5.14.0-70.105.1.rt21.177.el9_0, kernel-rt-modules-extra 5.14.0-70.105.1.rt21.177.el9_0, +2 more
fixed: vendor fix RHSA-2024:4412
Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.67.1.rt14.352.el9_2, kernel-rt-core 5.14.0-284.67.1.rt14.352.el9_2, kernel-rt-modules 5.14.0-284.67.1.rt14.352.el9_2, kernel-rt-debug-core 5.14.0-284.67.1.rt14.352.el9_2, kernel-rt-modules-core 5.14.0-284.67.1.rt14.352.el9_2, kernel-rt-debug-modules 5.14.0-284.67.1.rt14.352.el9_2, +4 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.67.1.rt14.352.el9_2, kernel-rt-kvm 5.14.0-284.67.1.rt14.352.el9_2, kernel-rt-core 5.14.0-284.67.1.rt14.352.el9_2, kernel-rt-modules 5.14.0-284.67.1.rt14.352.el9_2, kernel-rt-debug-kvm 5.14.0-284.67.1.rt14.352.el9_2, kernel-rt-debug-core 5.14.0-284.67.1.rt14.352.el9_2, +6 more
fixed: vendor fix RHSA-2024:3460
Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.18.1.el9_4, kernel-rt-core 5.14.0-427.18.1.el9_4, kernel-rt-modules 5.14.0-427.18.1.el9_4, kernel-rt-debug-core 5.14.0-427.18.1.el9_4, kernel-rt-modules-core 5.14.0-427.18.1.el9_4, kernel-rt-debug-modules 5.14.0-427.18.1.el9_4, +4 more
fixed: vendor fix RHSA-2024:3306
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 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.67.1.el9_2
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 ICSA-25-226-15 updated 2026-02-25

Siemens SINEC OS

Siemens RUGGEDCOM RST2428P (6GK6242-6PA00) Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family
not affected

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-04-03)

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected products

Linux Linux

Classification

Technology feeds

Linux kernel rss critical rss

References

Sources

CVE List CVE-2024-26673
NVD CVE-2024-26673

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.

Summary