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Fencer Vulns
high 7.8

CVE-2024-26643 json

netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout

published 2024-03-21 2 y ago modified 2026-10-15 25 d ago also EUVD-2024-23905

cvss
7.8
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 10%
public exploits
0
none known

Summary

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

netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout

While the rhashtable set gc runs asynchronously, a race allows it to collect elements from anonymous sets with timeouts while it is being released from the commit path.

Mingi Cho originally reported this issue in a different path in 6.1.x with a pipapo set with low timeouts which is not possible upstream since 7395dfacfff6 ("netfilter: nf_tables: use timestamp to check for set element timeout").

Fix this by setting on the dead flag for anonymous sets to skip async gc in this case.

According to 08e4c8c5919f ("netfilter: nf_tables: mark newset as dead on transaction abort"), Florian plans to accelerate abort path by releasing objects via workqueue, therefore, this sets on the dead flag for abort path too.

Patch / fix

  • Linux Linux 5.4.274, 5.10.215, 5.15.154, 6.1.84, 6.5, 6.6.24, 6.7.12, 6.8
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1.1
  • linux Debian 12 6.1.85-1
  • linux Debian 14, Debian 13 6.7.12-1

debian advisories DEBIAN-CVE-2024-26643

  • linux Ubuntu 20.04 LTS 5.4.0-187.207
  • linux Ubuntu 22.04 LTS 5.15.0-113.123
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1127.137
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1064.70
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1131.140
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1063.71
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1061.67
  • linux-ibm Ubuntu 20.04 LTS 5.4.0-1074.79

ubuntu advisories UBUNTU-CVE-2024-26643

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-rt RHEL 8 4.18.0-553.5.1.rt7.346.el8_10
  • kernel-rt-kvm RHEL 8 4.18.0-553.5.1.rt7.346.el8_10
  • kernel-rt-core RHEL 8 4.18.0-553.5.1.rt7.346.el8_10
  • kernel-rt-modules RHEL 8 4.18.0-553.5.1.rt7.346.el8_10
  • kernel-rt-debug-kvm RHEL 8 4.18.0-553.5.1.rt7.346.el8_10
  • kernel-rt-debug-core RHEL 8 4.18.0-553.5.1.rt7.346.el8_10
  • kernel-rt-debug-modules RHEL 8 4.18.0-553.5.1.rt7.346.el8_10
  • kernel-rt-modules-extra RHEL 8 4.18.0-553.5.1.rt7.346.el8_10

red hat advisories RHSA-2024:3627RHSA-2024:3618RHSA-2024:3461RHSA-2024:3460RHSA-2024:3306

  • kernel-rt SLE Micro 5.5 5.14.21-150500.13.103.2
  • kernel-source-rt SLE Micro 5.5 5.14.21-150500.13.103.2
  • kernel-rt SLE Micro 5.4, SLE Micro 5.3 5.14.21-150400.15.127.1
  • kernel-source-rt SLE Micro 5.4, SLE Micro 5.3 5.14.21-150400.15.127.1
  • kernel-64kb SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS, SLE High Performance Computing 15 SP4-ESPOS 5.14.21-150400.24.173.1
  • kernel-syms SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +3 more 5.14.21-150400.24.173.1
  • kernel-source SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +3 more 5.14.21-150400.24.173.1
  • kernel-default SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +7 more 5.14.21-150400.24.173.1

suse advisories SUSE-SU-2025:02852-1SUSE-SU-2025:02851-1SUSE-SU-2025:02849-1SUSE-SU-2025:02588-1SUSE-SU-2025:20028-1SUSE-SU-2025:20008-1

  • kernel AlmaLinux 8 4.18.0-553.5.1.el8_10
  • perf AlmaLinux 8 4.18.0-553.5.1.el8_10
  • bpftool AlmaLinux 8 4.18.0-553.5.1.el8_10
  • kernel-core AlmaLinux 8 4.18.0-553.5.1.el8_10
  • kernel-tools AlmaLinux 8 4.18.0-553.5.1.el8_10
  • python3-perf AlmaLinux 8 4.18.0-553.5.1.el8_10
  • kernel-modules AlmaLinux 8 4.18.0-553.5.1.el8_10
  • kernel-zfcpdump AlmaLinux 8 4.18.0-553.5.1.el8_10

almalinux advisories ALSA-2024:3618ALSA-2024:3627ALSA-2024:3306

  • kernel-rt Rocky Linux 8 4.18.0-553.5.1.rt7.346.el8_10
  • kernel Rocky Linux 8 4.18.0-553.5.1.el8_10

rocky linux advisories RLSA-2024:3627RLSA-2024:3618

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-2024-26643 updated cvss 4.7

kernel: netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout

  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    affected: workaround, no fix planned “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.”
  • 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 has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.”
  • 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:3306
  • 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:3461
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.5.1.el8_10, kernel 4.18.0-553.5.1.el8_10, bpftool 4.18.0-553.5.1.el8_10, kernel-core 4.18.0-553.5.1.el8_10, kernel-tools 4.18.0-553.5.1.el8_10, python3-perf 4.18.0-553.5.1.el8_10, +15 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:3618
  • 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:3306
  • 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:3461
show 8 more
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.5.1.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.5.1.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.5.1.el8_10
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:3618
  • 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
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:3306
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-kvm 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-core 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-modules 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-debug-kvm 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-debug-core 4.18.0-553.5.1.rt7.346.el8_10, +4 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:3627
  • 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:3306
  • 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:3460
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-core 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-modules 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-debug-core 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-debug-modules 4.18.0-553.5.1.rt7.346.el8_10, kernel-rt-modules-extra 4.18.0-553.5.1.rt7.346.el8_10, +2 more
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:3627
  • 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 “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:3306
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 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-24-102-01 updated cvss 5.5

Siemens SIMATIC S7-1500 TM MFP

  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
    affected: mitigation, no fix available

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

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 10% 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 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Linux Linux
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

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.