Improper access control in Linux kernel - CVE-2026-68294

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Main Vulnerability Database Vulnerabilities #VU142022

Improper access control in Linux kernel - CVE-2026-68294

Published: August 12, 2026


Vulnerability identifier: #VU142022
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-68294
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to bypass network namespace isolation.

The vulnerability exists due to improper access control in the AF_QIPCRTR socket creation logic and global QRTR state handling when creating and using QRTR sockets from a separate network namespace. A local user can create an AF_QIPCRTR socket in another network namespace and send crafted QRTR datagrams to sockets owned by a different namespace to bypass network namespace isolation.

The receiving socket may treat the message as originating from node id 1, making it indistinguishable from a legitimate local client.


Affected software

Linux kernel
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
SUSE Linux Enterprise Live Patching
SUSE Real Time Module
Public Cloud Module
Legacy Module
Development Tools Module
Basesystem Module
Ubuntu
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
linux-nvidia-tegra (Ubuntu package)
linux-nvidia-tegra-igx (Ubuntu package)
linux-nvidia-tegra-5.15 (Ubuntu package)
linux (Ubuntu package)
linux-lowlatency (Ubuntu package)
linux-azure (Ubuntu package)
linux-gcp (Ubuntu package)
linux-aws (Ubuntu package)
linux-ibm (Ubuntu package)
linux-oracle (Ubuntu package)
linux-azure-fde (Ubuntu package)
linux-realtime (Ubuntu package)
linux-fips (Ubuntu package)
linux-gkeop (Ubuntu package)
linux-gke (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-aws-fips (Ubuntu package)
linux-gcp-fips (Ubuntu package)
kernel-livepatch-6_4_0-150700_7_78-rt-debuginfo
kernel-livepatch-6_4_0-150700_7_78-rt
kernel-livepatch-SLE15-SP7-RT_Update_21-debugsource
kernel-livepatch-6_4_0-150700_53_84-default-debuginfo
kernel-livepatch-SLE15-SP7_Update_22-debugsource
kernel-livepatch-6_4_0-150700_53_84-default
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-rt
ocfs2-kmp-rt-debuginfo
cluster-md-kmp-rt-debuginfo
kernel-rt-debuginfo
kernel-rt-devel-debuginfo
kernel-rt-devel
dlm-kmp-rt
kernel-syms-rt
kernel-rt-debugsource
dlm-kmp-rt-debuginfo
gfs2-kmp-rt
gfs2-kmp-rt-debuginfo
ocfs2-kmp-rt
kernel-source-rt
kernel-devel-rt
cluster-md-kmp-rt
reiserfs-kmp-default
reiserfs-kmp-default-debuginfo
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-azure
kernel-azure-debugsource
kernel-azure-devel
kernel-azure-debuginfo
kernel-azure-devel-debuginfo
kernel-default-extra
kernel-default-extra-debuginfo
kernel-source
kernel-macros
ocfs2-kmp-default
gfs2-kmp-default
dlm-kmp-default
gfs2-kmp-default-debuginfo
cluster-md-kmp-default
kernel-default-debugsource
dlm-kmp-default-debuginfo
kernel-default-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default
kernel-default-devel
kernel-default-devel-debuginfo
kernel-devel
cluster-md-kmp-default-debuginfo
kernel-zfcpdump
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-64kb
kernel-64kb-debuginfo
kernel-64kb-devel-debuginfo
kernel-64kb-debugsource
kernel-64kb-devel
kernel-docs
kernel-syms
kernel-obs-build
kernel-obs-build-debugsource
kernel-default-base
kernel-zfcpdump-core (Red Hat package)
kernel-tools (Red Hat package)
kernel-tools-libs (Red Hat package)
kernel-uki-virt (Red Hat package)
kernel-uki-virt-addons (Red Hat package)
perf (Red Hat package)
python3-perf (Red Hat package)
kernel-zfcpdump (Red Hat package)
kernel-rt-modules-core (Red Hat package)
kernel-zfcpdump-devel (Red Hat package)
kernel-zfcpdump-devel-matched (Red Hat package)
kernel-zfcpdump-modules (Red Hat package)
kernel-zfcpdump-modules-core (Red Hat package)
kernel-zfcpdump-modules-extra (Red Hat package)
kernel-debug-modules-extra (Red Hat package)
kernel-rt-modules-extra (Red Hat package)
rtla (Red Hat package)
kernel-rt-modules (Red Hat package)
kernel-rt-devel (Red Hat package)
kernel-rt-debug-modules-extra (Red Hat package)
kernel-rt-debug-modules-core (Red Hat package)
kernel-rt-debug-modules (Red Hat package)
kernel-rt-debug-devel (Red Hat package)
kernel-rt-debug-core (Red Hat package)
kernel-rt-debug (Red Hat package)
kernel-rt-core (Red Hat package)
kernel-modules-extra-matched (Red Hat package)
kernel-modules-extra (Red Hat package)
kernel-modules-core (Red Hat package)
kernel-cross-headers (Red Hat package)
kernel-64k-debug-devel (Red Hat package)
kernel-rt-64k-debug-modules-core (Red Hat package)
kernel-rt-64k-debug-modules-extra (Red Hat package)
kernel-rt-64k-devel (Red Hat package)
kernel-rt-64k-modules (Red Hat package)
kernel-rt-64k-modules-core (Red Hat package)
kernel-rt-64k-modules-extra (Red Hat package)
rv (Red Hat package)
kernel-debug-modules-core (Red Hat package)
kernel-tools-libs-devel (Red Hat package)
libperf (Red Hat package)
kernel-modules (Red Hat package)
kernel-headers (Red Hat package)
kernel-devel-matched (Red Hat package)
kernel-devel (Red Hat package)
kernel-debug-uki-virt (Red Hat package)
kernel-rt-64k (Red Hat package)
kernel-64k-debug-devel-matched (Red Hat package)
kernel-64k-devel (Red Hat package)
kernel-debug (Red Hat package)
kernel-debug-core (Red Hat package)
kernel-debug-devel (Red Hat package)
kernel-64k-devel-matched (Red Hat package)
kernel-debug-modules (Red Hat package)
kernel-rt-64k-core (Red Hat package)
kernel-rt-64k-debug (Red Hat package)
kernel-rt-64k-debug-core (Red Hat package)
kernel-rt-64k-debug-devel (Red Hat package)
kernel-rt-64k-debug-modules (Red Hat package)
kernel-debug-devel-matched (Red Hat package)
linux-nvidia (Ubuntu package)
linux-oracle-5.15 (Ubuntu package)
linux-gcp-5.15 (Ubuntu package)
linux-gcp-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
linux-azure-7.0 (Ubuntu package)

How to mitigate CVE-2026-68294

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux-nvidia-tegra (Ubuntu package) - addressed in versions 5.15.0-1070.72, 6.8.0-1036.39+1
linux-nvidia-tegra-igx (Ubuntu package) - update to 5.15.0-1059.59
linux-nvidia-tegra-5.15 (Ubuntu package) - update to 5.15.0-1070.72~20.04.1
linux (Ubuntu package) - addressed in versions 5.15.0-195.205~20.04.1, 5.15.0-195.205, 5.15.0-198.208~20.04.1, 5.15.0-198.208+fips1, 5.15.0-1080.84, 5.15.0-1100.108, 5.15.0-1109.111, 5.15.0-1109.114, 5.15.0-1111.115~20.04.1, 5.15.0-1111.115, 5.15.0-1112.118~20.04.1, 5.15.0-1112.118, 5.15.0-1113.119, 5.15.0-1114.120, 5.15.0-1116.125~20.04.1, 5.15.0-1117.124~20.04.1, 5.15.0-1117.124, 5.15.0-1117.124+fips1, 5.15.0-1122.131~20.04.1, 5.15.0-1123.132~20.04.1, 5.15.0-1123.132, 5.15.0-1123.132+fips1, 5.15.0.195.160, 5.15.0.195.205~20.04.1, 5.15.0.198.114, 5.15.0.198.171, 5.15.0.198.208~20.04.1, 5.15.0.1080.83~20.04.1, 5.15.0.1100.99, 5.15.0.1109.105, 5.15.0.1109.113, 5.15.0.1111.108, 5.15.0.1111.115~20.04.1, 5.15.0.1112.111, 5.15.0.1112.118~20.04.1, 5.15.0.1113.112, 5.15.0.1114.110, 5.15.0.1116.120, 5.15.0.1117.113, 5.15.0.1117.120, 5.15.0.1117.124~20.04.1, 5.15.0.1122.131~20.04.1, 5.15.0.1123.107, 5.15.0.1123.121, 5.15.0.1123.132~20.04.1, 6.8.0-147.147, 7.0.0-38.38, 7.0.0-38.38.1, 7.0.0-1008.9, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14, 7.0.0-1015.15
linux-lowlatency (Ubuntu package) - update to 6.8.0-147.147.1
linux-azure (Ubuntu package) - addressed in versions 6.8.0-1071.79, 7.0.0-1016.16, 7.0.0-1017.17
linux-gcp (Ubuntu package) - addressed in versions 5.15.0-1118.128, 5.15.0-1118.128+fips1, 5.15.0.1118.107, 5.15.0.1118.115, 6.8.0-1071.79
linux-aws (Ubuntu package) - update to 6.8.0-1067.70
linux-ibm (Ubuntu package) - update to 6.8.0-1067.68
linux-oracle (Ubuntu package) - update to 6.8.0-1064.67
linux-azure-fde (Ubuntu package) - addressed in versions 5.15.0-1122.131, 5.15.0.1122.131, 6.8.0-1069.76
linux-realtime (Ubuntu package) - update to 6.8.1-1062.63
linux-fips (Ubuntu package) - update to 6.8.0-147.147+fips1
linux-gkeop (Ubuntu package) - update to 6.8.0-1052.56
linux-gke (Ubuntu package) - update to 6.8.0-1066.74
linux-azure-fips (Ubuntu package) - update to 6.8.0-1071.79+fips1
linux-aws-fips (Ubuntu package) - update to 6.8.0-1067.70+fips1
linux-gcp-fips (Ubuntu package) - update to 6.8.0-1071.79+fips1
kernel-livepatch-6_4_0-150700_7_78-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_78-rt - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7-RT_Update_21-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_53_84-default-debuginfo - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_22-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_84-default - update to 1-150700.15.3.1
kernel (Red Hat package) - addressed in versions 4.18.0-305.211.1.el8_4, 4.18.0-372.220.1.el8_6, 4.18.0-477.172.1.el8_8, 5.14.0-427.153.1.el9_4, 5.14.0-570.146.1.el9_6, 5.14.0-687.48.1.el9_8, 6.12.0-55.108.1.el10_0
kernel-rt (Red Hat package) - addressed in versions 4.18.0-553.163.1.rt7.504.el8_10, 5.14.0-284.195.1.rt14.480.el9_2, 6.12.0-211.56.1.el10_2
kernel-rt - update to 6.4.0-150700.7.78.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.78.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.78.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.78.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.78.1
kernel-rt-devel - update to 6.4.0-150700.7.78.1
dlm-kmp-rt - update to 6.4.0-150700.7.78.1
kernel-syms-rt - update to 6.4.0-150700.7.78.1
kernel-rt-debugsource - update to 6.4.0-150700.7.78.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.78.1
gfs2-kmp-rt - update to 6.4.0-150700.7.78.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.78.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.78.1
kernel-source-rt - update to 6.4.0-150700.7.78.1
kernel-devel-rt - update to 6.4.0-150700.7.78.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.78.1
reiserfs-kmp-default - update to 6.4.0-150700.53.84.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.84.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.84.1
kernel-default-livepatch - update to 6.4.0-150700.53.84.1
kernel-azure - update to 6.4.0-150700.53.84.1
kernel-azure-debugsource - update to 6.4.0-150700.53.84.1
kernel-azure-devel - update to 6.4.0-150700.53.84.1
kernel-azure-debuginfo - update to 6.4.0-150700.53.84.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.53.84.1
kernel-default-extra - update to 6.4.0-150700.53.84.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.84.1
kernel-source - update to 6.4.0-150700.53.84.1
kernel-macros - update to 6.4.0-150700.53.84.1
ocfs2-kmp-default - update to 6.4.0-150700.53.84.1
gfs2-kmp-default - update to 6.4.0-150700.53.84.1
dlm-kmp-default - update to 6.4.0-150700.53.84.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.84.1
cluster-md-kmp-default - update to 6.4.0-150700.53.84.1
kernel-default-debugsource - update to 6.4.0-150700.53.84.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.84.1
kernel-default-debuginfo - update to 6.4.0-150700.53.84.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.84.1
kernel-default - update to 6.4.0-150700.53.84.1
kernel-default-devel - update to 6.4.0-150700.53.84.1
kernel-default-devel-debuginfo - update to 6.4.0-150700.53.84.1
kernel-devel - update to 6.4.0-150700.53.84.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.84.1
kernel-zfcpdump - update to 6.4.0-150700.53.84.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.84.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.84.1
kernel-64kb - update to 6.4.0-150700.53.84.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.84.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.84.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.84.1
kernel-64kb-devel - update to 6.4.0-150700.53.84.1
kernel-docs - update to 6.4.0-150700.53.84.1
kernel-syms - update to 6.4.0-150700.53.84.1
kernel-obs-build - update to 6.4.0-150700.53.84.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.84.1
kernel-default-base - update to 6.4.0-150700.53.84.1.150700.17.47.1
kernel-zfcpdump-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-tools (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-tools-libs (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-uki-virt (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-uki-virt-addons (Red Hat package) - update to 6.12.0-211.56.1.el10_2
perf (Red Hat package) - update to 6.12.0-211.56.1.el10_2
python3-perf (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-zfcpdump (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-modules-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-zfcpdump-devel (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-zfcpdump-devel-matched (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-zfcpdump-modules (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-zfcpdump-modules-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-zfcpdump-modules-extra (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-debug-modules-extra (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-modules-extra (Red Hat package) - update to 6.12.0-211.56.1.el10_2
rtla (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-modules (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-devel (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-debug-modules-extra (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-debug-modules-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-debug-modules (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-debug-devel (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-debug-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-debug (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-modules-extra-matched (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-modules-extra (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-modules-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-cross-headers (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-64k-debug-devel (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-64k-debug-modules-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-64k-debug-modules-extra (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-64k-devel (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-64k-modules (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-64k-modules-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-64k-modules-extra (Red Hat package) - update to 6.12.0-211.56.1.el10_2
rv (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-debug-modules-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-tools-libs-devel (Red Hat package) - update to 6.12.0-211.56.1.el10_2
libperf (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-modules (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-headers (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-devel-matched (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-devel (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-debug-uki-virt (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-64k (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-64k-debug-devel-matched (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-64k-devel (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-debug (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-debug-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-debug-devel (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-64k-devel-matched (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-debug-modules (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-64k-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-64k-debug (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-64k-debug-core (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-64k-debug-devel (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-rt-64k-debug-modules (Red Hat package) - update to 6.12.0-211.56.1.el10_2
kernel-debug-devel-matched (Red Hat package) - update to 6.12.0-211.56.1.el10_2
linux-nvidia (Ubuntu package) - addressed in versions 5.15.0-1112.113, 5.15.0.1112.112
linux-oracle-5.15 (Ubuntu package) - addressed in versions 5.15.0-1114.120~20.04.1, 5.15.0.1114.120~20.04.1
linux-gcp-5.15 (Ubuntu package) - addressed in versions 5.15.0-1118.128~20.04.1, 5.15.0.1118.128~20.04.1
linux-gcp-7.0 (Ubuntu package) - addressed in versions 7.0.0-38.38~24.04.4, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1015.15
linux-azure-7.0 (Ubuntu package) - addressed in versions 7.0.0-1016.16~24.04.1, 7.0.0-1017.17~24.04.1

External References

Related Security Bulletins