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Fencer Vulns
high 7.0

CVE-2023-28466 json

do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through 6.2.6 lacks a lock_sock call, leading to a race condition (with a resul…

published 2023-03-15 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-32143

cvss
7.0
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 19%
public exploits
0
none known

Summary

do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through 6.2.6 lacks a lock_sock call, leading to a race condition (with a resultant use-after-free or NULL pointer dereference).

Patch / fix

  • linux linux_kernel 5.10.177, 5.15.105, 6.1.20, 6.2.7
  • linux Debian 14, Debian 13, Debian 12 6.1.20-1

debian advisories DEBIAN-CVE-2023-28466

  • linux Ubuntu 20.04 LTS 5.4.0-156.173
  • linux Ubuntu 22.04 LTS 5.15.0-79.86
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1107.115
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1042.47
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1110.119
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1039.47
  • linux-gke Ubuntu 20.04 LTS 5.4.0-1105.112
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1039.44

ubuntu advisories UBUNTU-CVE-2023-28466

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 9 5.14.0-284.18.1.rt14.303.el9_2
  • kernel-rt-kvm RHEL 9 5.14.0-284.18.1.rt14.303.el9_2
  • kernel-rt-core RHEL 9 5.14.0-284.18.1.rt14.303.el9_2
  • kernel-rt-modules RHEL 9 5.14.0-284.18.1.rt14.303.el9_2
  • kernel-rt-debug-kvm RHEL 9 5.14.0-284.18.1.rt14.303.el9_2
  • kernel-rt-debug-core RHEL 9 5.14.0-284.18.1.rt14.303.el9_2
  • kernel-rt-modules-core RHEL 9 5.14.0-284.18.1.rt14.303.el9_2
  • kernel-rt-debug-modules RHEL 9 5.14.0-284.18.1.rt14.303.el9_2

red hat advisories RHSA-2023:3708RHSA-2023:3723RHSA-2023:4801RHSA-2023:4789RHSA-2023:4814RHSA-2023:3819

  • kernel-rt Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.5.1
  • kernel-syms-rt Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.5.1
  • kernel-rt_debug Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.5.1
  • kernel-source-rt Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.5.1
  • kernel-syms SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS +1 more 5.3.18-150200.24.148.1
  • kernel-source SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS +1 more 5.3.18-150200.24.148.1
  • kernel-default SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE Live Patching 15 SP2 +3 more 5.3.18-150200.24.148.1
  • kernel-preempt SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS +1 more 5.3.18-150200.24.148.1

suse advisories SUSE-SU-2023:2809-1SUSE-SU-2023:1800-1SUSE-SU-2023:1811-1SUSE-SU-2023:1892-1SUSE-SU-2023:2755-1SUSE-SU-2023:2743-1

  • kernel-rt AlmaLinux 8 4.18.0-477.15.1.rt7.278.el8_8
  • kernel-rt-kvm AlmaLinux 8 4.18.0-477.15.1.rt7.278.el8_8
  • kernel-rt-core AlmaLinux 8 4.18.0-477.15.1.rt7.278.el8_8
  • kernel-rt-modules AlmaLinux 8 4.18.0-477.15.1.rt7.278.el8_8
  • kernel-rt-debug-kvm AlmaLinux 8 4.18.0-477.15.1.rt7.278.el8_8
  • kernel-rt-debug-core AlmaLinux 8 4.18.0-477.15.1.rt7.278.el8_8
  • kernel-rt-debug-modules AlmaLinux 8 4.18.0-477.15.1.rt7.278.el8_8
  • kernel-rt-modules-extra AlmaLinux 8 4.18.0-477.15.1.rt7.278.el8_8

almalinux advisories ALSA-2023:3819ALSA-2023:3847ALSA-2023:3708ALSA-2023:3723

  • kernel-rt Rocky Linux 8 4.18.0-477.15.1.rt7.278.el8_8
  • kernel Rocky Linux 8 4.18.0-477.15.1.el8_8

rocky linux advisories RLSA-2023:3819RLSA-2023:3847

  • kernel CBL-Mariner 2.0 5.15.107.1-2

azure linux advisories AZL-25661

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-2023-28466 updated cvss 7.0

kernel: tls: race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference

  • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.70.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.70.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.70.1.el8_6
    fixed: vendor fix RHSA-2023:4789
  • Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-debuginfo-common-s390x 5.14.0-70.70.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.70.1.el9_0, kernel-debuginfo-common-aarch64 5.14.0-70.70.1.el9_0, kernel-debuginfo-common-ppc64le 5.14.0-70.70.1.el9_0
    fixed: vendor fix RHSA-2023:4801
  • Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-284.18.1.el9_2, rtla 5.14.0-284.18.1.el9_2, kernel-devel-matched 5.14.0-284.18.1.el9_2, kernel-64k-devel-matched 5.14.0-284.18.1.el9_2, kernel-debug-devel-matched 5.14.0-284.18.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.18.1.el9_2, +5 more
    fixed: vendor fix RHSA-2023:3723
  • Red Hat Enterprise Linux AppStream EUS (v.9.0) perf 5.14.0-70.70.1.el9_0, kernel-devel-matched 5.14.0-70.70.1.el9_0, kernel-debug-devel-matched 5.14.0-70.70.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.70.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.70.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.70.1.el9_0, +2 more
    fixed: vendor fix RHSA-2023:4801
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-477.15.1.el8_8, kernel 4.18.0-477.15.1.el8_8, bpftool 4.18.0-477.15.1.el8_8, kernel-core 4.18.0-477.15.1.el8_8, kernel-tools 4.18.0-477.15.1.el8_8, python3-perf 4.18.0-477.15.1.el8_8, +15 more
    fixed: vendor fix RHSA-2023:3847
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.0.0-284.18.1.el9_2, kernel 5.14.0-284.18.1.el9_2, kernel-64k 5.14.0-284.18.1.el9_2, kernel-core 5.14.0-284.18.1.el9_2, kernel-tools 5.14.0-284.18.1.el9_2, python3-perf 5.14.0-284.18.1.el9_2, +28 more
    fixed: vendor fix RHSA-2023:3723
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.70.1.el8_6, kernel 4.18.0-372.70.1.el8_6, bpftool 4.18.0-372.70.1.el8_6, kernel-core 4.18.0-372.70.1.el8_6, kernel-tools 4.18.0-372.70.1.el8_6, python3-perf 4.18.0-372.70.1.el8_6, +15 more
    fixed: vendor fix RHSA-2023:4789
  • Red Hat Enterprise Linux BaseOS EUS (v.9.0) kernel 5.14.0-70.70.1.el9_0, bpftool 5.14.0-70.70.1.el9_0, kernel-core 5.14.0-70.70.1.el9_0, kernel-tools 5.14.0-70.70.1.el9_0, python3-perf 5.14.0-70.70.1.el9_0, kernel-modules 5.14.0-70.70.1.el9_0, +14 more
    fixed: vendor fix RHSA-2023:4801
show 9 more
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-477.15.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.15.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.15.1.el8_8
    fixed: vendor fix RHSA-2023:3847
  • Red Hat Enterprise Linux CRB (v. 9) kernel-debuginfo-common-s390x 5.14.0-284.18.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.18.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.18.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.18.1.el9_2
    fixed: vendor fix RHSA-2023:3723
  • Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-477.15.1.rt7.278.el8_8, kernel-rt-kvm 4.18.0-477.15.1.rt7.278.el8_8, kernel-rt-core 4.18.0-477.15.1.rt7.278.el8_8, kernel-rt-modules 4.18.0-477.15.1.rt7.278.el8_8, kernel-rt-debug-kvm 4.18.0-477.15.1.rt7.278.el8_8, kernel-rt-debug-core 4.18.0-477.15.1.rt7.278.el8_8, +4 more
    fixed: vendor fix RHSA-2023:3819
  • Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-284.18.1.rt14.303.el9_2, kernel-rt-kvm 5.14.0-284.18.1.rt14.303.el9_2, kernel-rt-core 5.14.0-284.18.1.rt14.303.el9_2, kernel-rt-modules 5.14.0-284.18.1.rt14.303.el9_2, kernel-rt-debug-kvm 5.14.0-284.18.1.rt14.303.el9_2, kernel-rt-debug-core 5.14.0-284.18.1.rt14.303.el9_2, +6 more
    fixed: vendor fix RHSA-2023:3708
  • Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt 5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-core 5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-modules 5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-debug-core 5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-debug-modules 5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-modules-extra 5.14.0-70.70.1.rt21.141.el9_0, +2 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt 5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-kvm 5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-core 5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-modules 5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-debug-kvm 5.14.0-70.70.1.rt21.141.el9_0, kernel-rt-debug-core 5.14.0-70.70.1.rt21.141.el9_0, +4 more
    fixed: vendor fix RHSA-2023:4814
  • Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-477.15.1.rt7.278.el8_8, kernel-rt-core 4.18.0-477.15.1.rt7.278.el8_8, kernel-rt-modules 4.18.0-477.15.1.rt7.278.el8_8, kernel-rt-debug-core 4.18.0-477.15.1.rt7.278.el8_8, kernel-rt-debug-modules 4.18.0-477.15.1.rt7.278.el8_8, kernel-rt-modules-extra 4.18.0-477.15.1.rt7.278.el8_8, +2 more
    fixed: vendor fix RHSA-2023:3819
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-284.18.1.rt14.303.el9_2, kernel-rt-core 5.14.0-284.18.1.rt14.303.el9_2, kernel-rt-modules 5.14.0-284.18.1.rt14.303.el9_2, kernel-rt-debug-core 5.14.0-284.18.1.rt14.303.el9_2, kernel-rt-modules-core 5.14.0-284.18.1.rt14.303.el9_2, kernel-rt-debug-modules 5.14.0-284.18.1.rt14.303.el9_2, +4 more
    fixed: vendor fix RHSA-2023:3708
  • Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.70.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.70.1.el8_6
    fixed: vendor fix RHSA-2023:4789
  • 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 AppStream (v. 9) kernel-doc 5.14.0-284.18.1.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-24-046-11 updated cvss 7.0

Siemens SCALANCE XCM-/XRM-300

  • Siemens SCALANCE XCH328 (6GK5328-4TS01-2EC2) <V2.4 Siemens SCALANCE XCM324 (6GK5324-8TS01-2AC2) <V2.4 Siemens SCALANCE XCM328 (6GK5328-4TS01-2AC2) <V2.4 Siemens SCALANCE XCM332 (6GK5332-0GA01-2AC2) <V2.4 Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC) (6GK5334-2TS01-2ER3) <V2.4 Siemens SCALANCE XRM334 (2x230 V AC, 8xFO) (6GK5334-2TS01-4AR3) <V2.4
    +5 more products
    Siemens SCALANCE XRM334 (2x230 V AC, 12xFO) (6GK5334-3TS01-4AR3) <V2.4 Siemens SCALANCE XRM334 (24 V DC, 8xFO) (6GK5334-2TS01-2AR3) <V2.4 Siemens SCALANCE XRM334 (24 V DC, 12xFO) (6GK5334-3TS01-2AR3) <V2.4 Siemens SCALANCE XRM334 (230 V AC, 8xFO) (6GK5334-2TS01-3AR3) <V2.4 Siemens SCALANCE XRM334 (230 V AC, 12xFO) (6GK5334-3TS01-3AR3) <V2.4
    affected: fixed in V2.4 support.industry.siemens.com

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
total
Assessed
18 mo ago

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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.