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Fencer Vulns
high 7.8

CVE-2024-1085 json

Use-after-free in Linux kernel's netfilter: nf_tables component

published 2024-01-31 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-16860

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits
0
none known

Summary

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

The nft_setelem_catchall_deactivate() function checks whether the catch-all set element is active in the current generation instead of the next generation before freeing it, but only flags it inactive in the next generation, making it possible to free the element multiple times, leading to a double free vulnerability.

We recommend upgrading past commit b1db244ffd041a49ecc9618e8feb6b5c1afcdaa7.

Patch / fix

  • Linux Kernel 6.8
  • linux Debian 12 6.1.76-1
  • linux Debian 14, Debian 13 6.6.15-1

debian advisories DEBIAN-CVE-2024-1085

  • linux Ubuntu 22.04 LTS 5.15.0-101.111
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1056.61
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1054.62
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1053.58
  • linux-ibm Ubuntu 22.04 LTS 5.15.0-1049.52
  • linux-kvm Ubuntu 22.04 LTS 5.15.0-1053.58
  • linux-azure Ubuntu 22.04 LTS 5.15.0-1059.67
  • linux-gkeop Ubuntu 22.04 LTS 5.15.0-1039.45

ubuntu advisories UBUNTU-CVE-2024-1085

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 5.14.0-427.13.1.el9_4
  • rv RHEL 9 5.14.0-427.13.1.el9_4
  • perf RHEL 9 5.14.0-427.13.1.el9_4
  • rtla RHEL 9 5.14.0-427.13.1.el9_4
  • bpftool RHEL 9 7.3.0-427.13.1.el9_4
  • libperf RHEL 9 5.14.0-427.13.1.el9_4
  • kernel-rt RHEL 9 5.14.0-427.13.1.el9_4
  • kernel-64k RHEL 9 5.14.0-427.13.1.el9_4

red hat advisories RHSA-2024:2394RHSA-2024:1018RHSA-2024:1019

  • dtb-aarch64 openSUSE Leap 15.5 5.14.21-150500.55.49.1
  • kernel-64kb SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.49.1
  • kernel-syms SLE Module for Development Tools 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.49.1
  • kernel-obs-qa openSUSE Leap 15.5 5.14.21-150500.55.49.1
  • kernel-source SLE Module for Development Tools 15 SP5, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.49.1
  • kernel-default SLE Workstation Extension 15 SP5, SLE Module for Legacy 15 SP5, SLE Module for Basesystem 15 SP5 +4 more 5.14.21-150500.55.49.1
  • kernel-kvmsmall openSUSE Leap 15.5 5.14.21-150500.55.49.1
  • kernel-zfcpdump SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.49.1

suse advisories SUSE-SU-2024:1318-1SUSE-SU-2024:1312-1SUSE-SU-2024:1299-1SUSE-SU-2024:1298-1SUSE-SU-2024:1292-1SUSE-SU-2024:1288-1

  • kernel AlmaLinux 9 5.14.0-427.13.1.el9_4
  • rv AlmaLinux 9 5.14.0-427.13.1.el9_4
  • perf AlmaLinux 9 5.14.0-427.13.1.el9_4
  • rtla AlmaLinux 9 5.14.0-427.13.1.el9_4
  • bpftool AlmaLinux 9 7.3.0-427.13.1.el9_4
  • libperf AlmaLinux 9 5.14.0-427.13.1.el9_4
  • kernel-rt AlmaLinux 9 5.14.0-427.13.1.el9_4
  • kernel-64k AlmaLinux 9 5.14.0-427.13.1.el9_4

almalinux advisories ALSA-2024:2394

  • kernel Azure Linux 3.0 6.6.35.1-5

azure linux advisories AZL-62764

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2024-1085 updated cvss 6.6

kernel: nf_tables: use-after-free vulnerability in the nft_setelem_catchall_deactivate() function

  • 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: workaround, no fix available
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.55.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.55.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.55.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.55.1.el9_2
    fixed: vendor fix RHSA-2024:1018
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.13.1.el9_4, perf 5.14.0-427.13.1.el9_4, rtla 5.14.0-427.13.1.el9_4, kernel-devel-matched 5.14.0-427.13.1.el9_4, kernel-64k-devel-matched 5.14.0-427.13.1.el9_4, kernel-debug-devel-matched 5.14.0-427.13.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:2394
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.55.1.el9_2, rtla 5.14.0-284.55.1.el9_2, kernel-devel-matched 5.14.0-284.55.1.el9_2, kernel-64k-devel-matched 5.14.0-284.55.1.el9_2, kernel-debug-devel-matched 5.14.0-284.55.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.55.1.el9_2, +5 more
    fixed: vendor fix RHSA-2024:1018
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.13.1.el9_4, kernel 5.14.0-427.13.1.el9_4, kernel-64k 5.14.0-427.13.1.el9_4, kernel-core 5.14.0-427.13.1.el9_4, kernel-tools 5.14.0-427.13.1.el9_4, python3-perf 5.14.0-427.13.1.el9_4, +28 more
    fixed: vendor fix RHSA-2024:2394
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.55.1.el9_2, kernel 5.14.0-284.55.1.el9_2, kernel-64k 5.14.0-284.55.1.el9_2, kernel-core 5.14.0-284.55.1.el9_2, kernel-tools 5.14.0-284.55.1.el9_2, python3-perf 5.14.0-284.55.1.el9_2, +28 more
    fixed: vendor fix RHSA-2024:1018
  • Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.13.1.el9_4 Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.13.1.el9_4, kernel-rt-kvm 5.14.0-427.13.1.el9_4, kernel-rt-core 5.14.0-427.13.1.el9_4, kernel-rt-modules 5.14.0-427.13.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.13.1.el9_4, kernel-rt-debug-core 5.14.0-427.13.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:2394
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-core 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-modules 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-debug-core 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-modules-core 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-debug-modules 5.14.0-284.55.1.rt14.340.el9_2, +4 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-kvm 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-core 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-modules 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-debug-kvm 5.14.0-284.55.1.rt14.340.el9_2, kernel-rt-debug-core 5.14.0-284.55.1.rt14.340.el9_2, +6 more
    fixed: vendor fix RHSA-2024:1019
show 2 more
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.13.1.el9_4, kernel-rt-core 5.14.0-427.13.1.el9_4, kernel-rt-modules 5.14.0-427.13.1.el9_4, kernel-rt-debug-core 5.14.0-427.13.1.el9_4, kernel-rt-modules-core 5.14.0-427.13.1.el9_4, kernel-rt-debug-modules 5.14.0-427.13.1.el9_4, +4 more
    fixed: vendor fix RHSA-2024:2394
  • 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
    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
total
Assessed
18 mo ago

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Kernel

Classification

Weakness
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.