CVE-2023-6932 json
Use-after-free in Linux kernel's ipv4: igmp component
published 2023-12-19 2 y ago modified 2026-10-14 25 d ago also EUVD-2023-59130
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation.
A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread.
We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.
Patch / fix
- Linux Kernel 6.7
- Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
- Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
- Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1, V1.1.1
- Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
- linux Debian 12 6.1.66-1
- linux Debian 14, Debian 13 6.6.8-1
debian advisories DEBIAN-CVE-2023-6932
- linux Ubuntu 20.04 LTS 5.4.0-170.188
- linux Ubuntu 22.04 LTS 5.15.0-92.102
- linux-aws Ubuntu 20.04 LTS 5.4.0-1117.127
- linux-aws Ubuntu 22.04 LTS 5.15.0-1052.57
- linux-gcp Ubuntu 20.04 LTS 5.4.0-1121.130
- linux-gcp Ubuntu 22.04 LTS 5.15.0-1049.57
- linux-gke Ubuntu 22.04 LTS 5.15.0-1049.54
- linux-ibm Ubuntu 20.04 LTS 5.4.0-1064.69
ubuntu advisories UBUNTU-CVE-2023-6932
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-2024:2950RHSA-2024:3138RHSA-2024:1404RHSA-2024:1306RHSA-2024:1250
- dtb-aarch64 openSUSE Leap 15.5 5.14.21-150500.55.44.1
- kernel-64kb SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.44.1
- kernel-syms SLE Module for Development Tools 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.44.1
- kernel-obs-qa openSUSE Leap 15.5 5.14.21-150500.55.44.1
- kernel-source SLE Module for Development Tools 15 SP5, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.44.1
- kernel-default SLE Workstation Extension 15 SP5, SLE Module for Legacy 15 SP5, SLE Module for Basesystem 15 SP5 +4 more 5.14.21-150500.55.44.1
- kernel-kvmsmall openSUSE Leap 15.5 5.14.21-150500.55.44.1
- kernel-zfcpdump SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.44.1
suse advisories SUSE-SU-2024:0429-1SUSE-SU-2024:0428-1SUSE-SU-2024:0421-1SUSE-SU-2024:0418-1SUSE-SU-2024:0414-1SUSE-SU-2024:0411-1
- kernel-rt AlmaLinux 8 4.18.0-553.rt7.342.el8_10
- kernel-rt-kvm AlmaLinux 8 4.18.0-553.rt7.342.el8_10
- kernel-rt-core AlmaLinux 8 4.18.0-553.rt7.342.el8_10
- kernel-rt-modules AlmaLinux 8 4.18.0-553.rt7.342.el8_10
- kernel-rt-debug-kvm AlmaLinux 8 4.18.0-553.rt7.342.el8_10
- kernel-rt-debug-core AlmaLinux 8 4.18.0-553.rt7.342.el8_10
- kernel-rt-debug-modules AlmaLinux 8 4.18.0-553.rt7.342.el8_10
- kernel-rt-modules-extra AlmaLinux 8 4.18.0-553.rt7.342.el8_10
almalinux advisories ALSA-2024:2950ALSA-2024:3138ALSA-2024:2394
- kernel Rocky Linux 8 4.18.0-553.123.1.el8_10.cloud.0.1
- kernel-rt Rocky Linux 8 4.18.0-553.rt7.342.el8_10
- kernel Rocky Linux 8 4.18.0-553.el8_10
rocky linux advisories RXSA-2024:3138RLSA-2024:2950RLSA-2024:3138
- kernel CBL-Mariner 2.0 5.15.143.1-1
- kernel Azure Linux 3.0 6.6.29.1-4
azure linux advisories AZL-32263AZL-34870
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-2023-6932 updated cvss 7.0
kernel: use-after-free in IPv4 IGMP
-
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, python-perf, kernel-kdump, kernel-tools, +3 moreaffected: workaround, no fix planned “Out of support scope”
-
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 moreaffected: workaround, no fix available
-
Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.91.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.91.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.91.1.el8_6fixed: vendor fix RHSA-2024:0724
-
Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-debuginfo-common-x86_64 4.18.0-477.51.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.51.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.51.1.el8_8fixed: vendor fix RHSA-2024:1404
-
Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-debuginfo-common-s390x 5.14.0-70.93.2.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.93.2.el9_0, kernel-debuginfo-common-aarch64 5.14.0-70.93.2.el9_0, kernel-debuginfo-common-ppc64le 5.14.0-70.93.2.el9_0fixed: vendor fix RHSA-2024:1250
-
Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.52.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.52.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.52.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.52.1.el9_2fixed: vendor fix RHSA-2024:0723
-
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 morefixed: vendor fix RHSA-2024:2394
-
Red Hat Enterprise Linux AppStream EUS (v.9.0) perf 5.14.0-70.93.2.el9_0, kernel-devel-matched 5.14.0-70.93.2.el9_0, kernel-debug-devel-matched 5.14.0-70.93.2.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.93.2.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.93.2.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.93.2.el9_0, +2 morefixed: vendor fix RHSA-2024:1250
show 18 moreshow fewer
-
Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.52.1.el9_2, rtla 5.14.0-284.52.1.el9_2, kernel-devel-matched 5.14.0-284.52.1.el9_2, kernel-64k-devel-matched 5.14.0-284.52.1.el9_2, kernel-debug-devel-matched 5.14.0-284.52.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.52.1.el9_2, +5 morefixed: vendor fix RHSA-2024:0723
-
Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.el8_10, kernel 4.18.0-553.el8_10, bpftool 4.18.0-553.el8_10, kernel-core 4.18.0-553.el8_10, kernel-tools 4.18.0-553.el8_10, python3-perf 4.18.0-553.el8_10, +15 morefixed: vendor fix RHSA-2024:3138
-
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 morefixed: vendor fix RHSA-2024:2394
-
Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.91.1.el8_6, kernel 4.18.0-372.91.1.el8_6, bpftool 4.18.0-372.91.1.el8_6, kernel-core 4.18.0-372.91.1.el8_6, kernel-tools 4.18.0-372.91.1.el8_6, python3-perf 4.18.0-372.91.1.el8_6, +15 morefixed: vendor fix RHSA-2024:0724
-
Red Hat Enterprise Linux BaseOS EUS (v.8.8) perf 4.18.0-477.51.1.el8_8, kernel 4.18.0-477.51.1.el8_8, bpftool 4.18.0-477.51.1.el8_8, kernel-core 4.18.0-477.51.1.el8_8, kernel-tools 4.18.0-477.51.1.el8_8, python3-perf 4.18.0-477.51.1.el8_8, +15 morefixed: vendor fix RHSA-2024:1404
-
Red Hat Enterprise Linux BaseOS EUS (v.9.0) kernel 5.14.0-70.93.2.el9_0, bpftool 5.14.0-70.93.2.el9_0, kernel-core 5.14.0-70.93.2.el9_0, kernel-tools 5.14.0-70.93.2.el9_0, python3-perf 5.14.0-70.93.2.el9_0, kernel-modules 5.14.0-70.93.2.el9_0, +14 morefixed: vendor fix RHSA-2024:1250
-
Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.52.1.el9_2, kernel 5.14.0-284.52.1.el9_2, kernel-64k 5.14.0-284.52.1.el9_2, kernel-core 5.14.0-284.52.1.el9_2, kernel-tools 5.14.0-284.52.1.el9_2, python3-perf 5.14.0-284.52.1.el9_2, +28 morefixed: vendor fix RHSA-2024:0723
-
Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.el8_10fixed: vendor fix RHSA-2024:3138
-
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_4fixed: vendor fix RHSA-2024:2394
-
Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-553.rt7.342.el8_10, kernel-rt-kvm 4.18.0-553.rt7.342.el8_10, kernel-rt-core 4.18.0-553.rt7.342.el8_10, kernel-rt-modules 4.18.0-553.rt7.342.el8_10, kernel-rt-debug-kvm 4.18.0-553.rt7.342.el8_10, kernel-rt-debug-core 4.18.0-553.rt7.342.el8_10, +4 morefixed: vendor fix RHSA-2024:2950
-
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 morefixed: vendor fix RHSA-2024:2394
-
Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt 5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-core 5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-modules 5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-debug-core 5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-debug-modules 5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-modules-extra 5.14.0-70.93.1.rt21.165.el9_0, +2 morefixed: vendor fix RHSA-2024:1306
-
Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.52.1.rt14.337.el9_2, kernel-rt-core 5.14.0-284.52.1.rt14.337.el9_2, kernel-rt-modules 5.14.0-284.52.1.rt14.337.el9_2, kernel-rt-debug-core 5.14.0-284.52.1.rt14.337.el9_2, kernel-rt-modules-core 5.14.0-284.52.1.rt14.337.el9_2, kernel-rt-debug-modules 5.14.0-284.52.1.rt14.337.el9_2, +4 morefixed: vendor fix RHSA-2024:0725
-
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt 5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-kvm 5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-core 5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-modules 5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-debug-kvm 5.14.0-70.93.1.rt21.165.el9_0, kernel-rt-debug-core 5.14.0-70.93.1.rt21.165.el9_0, +4 morefixed: vendor fix RHSA-2024:1306
-
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.52.1.rt14.337.el9_2, kernel-rt-kvm 5.14.0-284.52.1.rt14.337.el9_2, kernel-rt-core 5.14.0-284.52.1.rt14.337.el9_2, kernel-rt-modules 5.14.0-284.52.1.rt14.337.el9_2, kernel-rt-debug-kvm 5.14.0-284.52.1.rt14.337.el9_2, kernel-rt-debug-core 5.14.0-284.52.1.rt14.337.el9_2, +6 morefixed: vendor fix RHSA-2024:0725
-
Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-553.rt7.342.el8_10, kernel-rt-core 4.18.0-553.rt7.342.el8_10, kernel-rt-modules 4.18.0-553.rt7.342.el8_10, kernel-rt-debug-core 4.18.0-553.rt7.342.el8_10, kernel-rt-debug-modules 4.18.0-553.rt7.342.el8_10, kernel-rt-modules-extra 4.18.0-553.rt7.342.el8_10, +2 morefixed: vendor fix RHSA-2024:2950
-
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 morefixed: vendor fix RHSA-2024:2394
-
Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.91.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.91.1.el8_6fixed: vendor fix RHSA-2024:0724
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 7.8
Siemens SIMATIC S7-1500 TM MFP
-
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystemaffected: 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 ICSA-25-226-15 updated
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 familynot affected
Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf
cisa ICSA-23-348-10 updated cvss 7.8
Siemens SIMATIC S7-1500
-
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5affected: fixed in V3.1.5, mitigation 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 ICSA-23-166-11 updated cvss 7.8
Siemens SIMATIC S7-1500 TM MFP Linux Kernel
-
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem <V1.1affected: fixed in V1.1, workaround 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
- 2 y ago
Exploit prediction
0.37% chance of exploitation in the next 30 days, higher than 30% 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 | 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Linux Kernel
- Siemens RUGGEDCOM RST2428P
- Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family
- Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family
- Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
- Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
- Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
- Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Classification
- Weakness
-
- CWE-416 Use After Free
- Technology feeds
References
-
git.kernel.org
/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=e2b706c691905fe78468c361aaabc719d0a496f1
patch, mailing-list
-
kernel.dance
/e2b706c691905fe78468c361aaabc719d0a496f1
patch
-
lists.debian.org
/debian-lts-announce/2024/01/msg00004.html
mailing-list, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2024/01/msg00005.html
mailing-list, third-party-advisory
-
packetstormsecurity.com
/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html
third-party-advisory
- cert-portal.siemens.com /productcert/html/ssa-794697.html
- cert-portal.siemens.com /productcert/html/ssa-398330.html
- cert-portal.siemens.com /productcert/html/ssa-265688.html
- cert-portal.siemens.com /productcert/html/ssa-613116.html
Sources
- CVE List CVE-2023-6932
- NVD CVE-2023-6932
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.