Skip to content
Fencer Vulns
high 7.8

CVE-2023-3812 json

Kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags

published 2023-07-24 3 y ago modified 2026-11-07 46 h ago also EUVD-2023-44445

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 28%
public exploits
0
none known

Summary

An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 8 0:4.18.0-513.9.1.el8_9, 0:4.18.0-513.9.1.rt7.311.el8_9
  • Red Hat Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions 0:4.18.0-147.94.1.el8_1
  • Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:4.18.0-193.133.1.el8_2
  • Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service 0:4.18.0-193.133.1.el8_2, 0:4.18.0-193.133.1.rt13.184.el8_2
  • Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions 0:4.18.0-193.133.1.el8_2
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:4.18.0-305.120.1.el8_4
  • Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service 0:4.18.0-305.120.1.el8_4, 0:4.18.0-305.120.1.rt7.196.el8_4
  • Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions 0:4.18.0-305.120.1.el8_4
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support 0:4.18.0-372.87.1.el8_6
  • Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support 0:4.18.0-477.43.1.el8_8
  • Red Hat Red Hat Enterprise Linux 9 0:5.14.0-362.18.1.el9_3
  • Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support 0:5.14.0-70.80.1.el9_0, 0:5.14.0-70.80.1.rt21.151.el9_0
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support 0:5.14.0-284.40.1.el9_2, 0:5.14.0-284.40.1.rt14.325.el9_2
  • Red Hat Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 0:4.18.0-372.87.1.el8_6
  • linux Debian 14, Debian 13, Debian 12 6.0.8-1

debian advisories DEBIAN-CVE-2023-3812

  • linux Ubuntu 18.04 LTS 4.15.0-206.217
  • linux Ubuntu 20.04 LTS 5.4.0-139.156
  • linux Ubuntu 22.04 LTS 5.15.0-60.66
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1151.164
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1096.104
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1030.34
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1100.109
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1029.36

ubuntu advisories UBUNTU-CVE-2023-3812

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 5.14.0-362.18.1.el9_3
  • rv RHEL 9 5.14.0-362.18.1.el9_3
  • perf RHEL 9 5.14.0-362.18.1.el9_3
  • rtla RHEL 9 5.14.0-362.18.1.el9_3
  • bpftool RHEL 9 7.2.0-362.18.1.el9_3
  • libperf RHEL 9 5.14.0-362.18.1.el9_3
  • kernel-rt RHEL 9 5.14.0-362.18.1.el9_3
  • kernel-64k RHEL 9 5.14.0-362.18.1.el9_3

red hat advisories RHSA-2024:2008RHSA-2024:2006RHSA-2024:0461RHSA-2024:0412RHSA-2023:7549RHSA-2023:7370

  • kernel-syms SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.176.1
  • kernel-source SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.176.1
  • kernel-default SLES for SAP 12 SP5, SLES 12 SP5, SLE Workstation Extension 12 SP5 +2 more 4.12.14-122.176.1
  • kernel-obs-build SLE Software Development Kit 12 SP5 4.12.14-122.176.1
  • kernel-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.149.1
  • kernel-syms-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.149.1
  • kernel-source-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.149.1
  • kernel-default SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE Live Patching 15 SP1 +3 more 4.12.14-150100.197.157.1

suse advisories SUSE-SU-2023:3928-1SUSE-SU-2023:3893-1SUSE-SU-2023:3892-1SUSE-SU-2023:3889-1SUSE-SU-2023:3846-1SUSE-SU-2023:3844-1

  • kernel AlmaLinux 8 4.18.0-513.9.1.el8_9
  • perf AlmaLinux 8 4.18.0-513.9.1.el8_9
  • bpftool AlmaLinux 8 4.18.0-513.9.1.el8_9
  • kernel-core AlmaLinux 8 4.18.0-513.9.1.el8_9
  • kernel-tools AlmaLinux 8 4.18.0-513.9.1.el8_9
  • python3-perf AlmaLinux 8 4.18.0-513.9.1.el8_9
  • kernel-modules AlmaLinux 8 4.18.0-513.9.1.el8_9
  • kernel-zfcpdump AlmaLinux 8 4.18.0-513.9.1.el8_9

almalinux advisories ALSA-2023:7549

  • kernel Rocky Linux 8 4.18.0-513.9.1.el8_9.cloud
  • kernel Rocky Linux 8 4.18.0-513.9.1.el8_9
  • kernel-rt Rocky Linux 8 4.18.0-513.9.1.rt7.311.el8_9

rocky linux advisories RXSA-2023:7549RLSA-2023:7549RLSA-2023:7548

  • kernel CBL-Mariner 2.0 5.15.126.1-1

azure linux advisories AZL-27764

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-2023-3812 updated cvss 7.8

kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags

  • 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 “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.”
  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-513.9.1.el8_9, kernel-debuginfo-common-aarch64 4.18.0-513.9.1.el8_9, kernel-debuginfo-common-ppc64le 4.18.0-513.9.1.el8_9
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7549
  • Red Hat CodeReady Linux Builder (v. 9) libperf 5.14.0-362.18.1.el9_3, kernel-debuginfo-common-s390x 5.14.0-362.18.1.el9_3, kernel-debuginfo-common-x86_64 5.14.0-362.18.1.el9_3, kernel-debuginfo-common-aarch64 5.14.0-362.18.1.el9_3, kernel-debuginfo-common-ppc64le 5.14.0-362.18.1.el9_3
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0461
  • Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.87.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.87.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.87.1.el8_6
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0412
  • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-debuginfo-common-x86_64 4.18.0-477.43.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.43.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.43.1.el8_8
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0575
  • Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-debuginfo-common-s390x 5.14.0-70.80.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.80.1.el9_0, kernel-debuginfo-common-aarch64 5.14.0-70.80.1.el9_0, kernel-debuginfo-common-ppc64le 5.14.0-70.80.1.el9_0
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7382
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.40.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.40.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.40.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.40.1.el9_2
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7370
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-362.18.1.el9_3, perf 5.14.0-362.18.1.el9_3, rtla 5.14.0-362.18.1.el9_3, kernel-devel-matched 5.14.0-362.18.1.el9_3, kernel-64k-devel-matched 5.14.0-362.18.1.el9_3, kernel-debug-devel-matched 5.14.0-362.18.1.el9_3, +6 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0461
show 28 more
  • Red Hat Enterprise Linux AppStream EUS (v.9.0) perf 5.14.0-70.80.1.el9_0, kernel-devel-matched 5.14.0-70.80.1.el9_0, kernel-debug-devel-matched 5.14.0-70.80.1.el9_0, kernel-debuginfo-common-s390x 5.14.0-70.80.1.el9_0, kernel-zfcpdump-devel-matched 5.14.0-70.80.1.el9_0, kernel-debuginfo-common-x86_64 5.14.0-70.80.1.el9_0, +2 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7382
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.40.1.el9_2, rtla 5.14.0-284.40.1.el9_2, kernel-devel-matched 5.14.0-284.40.1.el9_2, kernel-64k-devel-matched 5.14.0-284.40.1.el9_2, kernel-debug-devel-matched 5.14.0-284.40.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.40.1.el9_2, +5 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7370
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-513.9.1.el8_9, kernel 4.18.0-513.9.1.el8_9, bpftool 4.18.0-513.9.1.el8_9, kernel-core 4.18.0-513.9.1.el8_9, kernel-tools 4.18.0-513.9.1.el8_9, python3-perf 4.18.0-513.9.1.el8_9, +16 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7549
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.2.0-362.18.1.el9_3, kernel 5.14.0-362.18.1.el9_3, kernel-64k 5.14.0-362.18.1.el9_3, kernel-core 5.14.0-362.18.1.el9_3, kernel-tools 5.14.0-362.18.1.el9_3, python3-perf 5.14.0-362.18.1.el9_3, +30 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0461
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) perf 4.18.0-193.133.1.el8_2, kernel 4.18.0-193.133.1.el8_2, bpftool 4.18.0-193.133.1.el8_2, kernel-core 4.18.0-193.133.1.el8_2, kernel-tools 4.18.0-193.133.1.el8_2, python3-perf 4.18.0-193.133.1.el8_2, +8 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:2006
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.120.1.el8_4, kernel 4.18.0-305.120.1.el8_4, bpftool 4.18.0-305.120.1.el8_4, kernel-core 4.18.0-305.120.1.el8_4, kernel-tools 4.18.0-305.120.1.el8_4, python3-perf 4.18.0-305.120.1.el8_4, +8 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0562
  • Red Hat Enterprise Linux BaseOS E4S (v. 8.1) perf 4.18.0-147.94.1.el8_1, kernel 4.18.0-147.94.1.el8_1, bpftool 4.18.0-147.94.1.el8_1, kernel-core 4.18.0-147.94.1.el8_1, kernel-tools 4.18.0-147.94.1.el8_1, python3-perf 4.18.0-147.94.1.el8_1, +13 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:6813
  • Red Hat Enterprise Linux BaseOS E4S (v. 8.2) perf 4.18.0-193.133.1.el8_2, kernel 4.18.0-193.133.1.el8_2, bpftool 4.18.0-193.133.1.el8_2, kernel-core 4.18.0-193.133.1.el8_2, kernel-tools 4.18.0-193.133.1.el8_2, python3-perf 4.18.0-193.133.1.el8_2, +12 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:2006
  • Red Hat Enterprise Linux BaseOS E4S (v.8.4) perf 4.18.0-305.120.1.el8_4, kernel 4.18.0-305.120.1.el8_4, bpftool 4.18.0-305.120.1.el8_4, kernel-core 4.18.0-305.120.1.el8_4, kernel-tools 4.18.0-305.120.1.el8_4, python3-perf 4.18.0-305.120.1.el8_4, +13 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0562
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.87.1.el8_6, kernel 4.18.0-372.87.1.el8_6, bpftool 4.18.0-372.87.1.el8_6, kernel-core 4.18.0-372.87.1.el8_6, kernel-tools 4.18.0-372.87.1.el8_6, python3-perf 4.18.0-372.87.1.el8_6, +19 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0412
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) perf 4.18.0-477.43.1.el8_8, kernel 4.18.0-477.43.1.el8_8, bpftool 4.18.0-477.43.1.el8_8, kernel-core 4.18.0-477.43.1.el8_8, kernel-tools 4.18.0-477.43.1.el8_8, python3-perf 4.18.0-477.43.1.el8_8, +18 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0575
  • Red Hat Enterprise Linux BaseOS EUS (v.9.0) kernel 5.14.0-70.80.1.el9_0, bpftool 5.14.0-70.80.1.el9_0, kernel-core 5.14.0-70.80.1.el9_0, kernel-tools 5.14.0-70.80.1.el9_0, python3-perf 5.14.0-70.80.1.el9_0, kernel-modules 5.14.0-70.80.1.el9_0, +19 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7382
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.40.1.el9_2, kernel 5.14.0-284.40.1.el9_2, kernel-64k 5.14.0-284.40.1.el9_2, kernel-core 5.14.0-284.40.1.el9_2, kernel-tools 5.14.0-284.40.1.el9_2, python3-perf 5.14.0-284.40.1.el9_2, +32 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7370
  • Red Hat Enterprise Linux BaseOS TUS (v. 8.2) perf 4.18.0-193.133.1.el8_2, kernel 4.18.0-193.133.1.el8_2, bpftool 4.18.0-193.133.1.el8_2, kernel-core 4.18.0-193.133.1.el8_2, kernel-tools 4.18.0-193.133.1.el8_2, python3-perf 4.18.0-193.133.1.el8_2, +8 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:2006
  • Red Hat Enterprise Linux BaseOS TUS (v.8.4) perf 4.18.0-305.120.1.el8_4, kernel 4.18.0-305.120.1.el8_4, bpftool 4.18.0-305.120.1.el8_4, kernel-core 4.18.0-305.120.1.el8_4, kernel-tools 4.18.0-305.120.1.el8_4, python3-perf 4.18.0-305.120.1.el8_4, +8 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0562
  • Red Hat Enterprise Linux for Real Time (v. 8) kernel-rt 4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-core 4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-modules 4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-debug-core 4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-debug-modules 4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-modules-extra 4.18.0-513.9.1.rt7.311.el8_9, +2 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7548
  • Red Hat Enterprise Linux NFV TUS (v.8.4) kernel-rt 4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-kvm 4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-core 4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-modules 4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-debug-kvm 4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-debug-core 4.18.0-305.120.1.rt7.196.el8_4, +4 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0563
  • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-362.18.1.el9_3, kernel-rt-core 5.14.0-362.18.1.el9_3, kernel-rt-modules 5.14.0-362.18.1.el9_3, kernel-rt-debug-core 5.14.0-362.18.1.el9_3, kernel-rt-modules-core 5.14.0-362.18.1.el9_3, kernel-rt-debug-modules 5.14.0-362.18.1.el9_3, +4 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0461
  • Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt 5.14.0-70.80.1.rt21.151.el9_0, kernel-rt-core 5.14.0-70.80.1.rt21.151.el9_0, kernel-rt-modules 5.14.0-70.80.1.rt21.151.el9_0, kernel-rt-debug-core 5.14.0-70.80.1.rt21.151.el9_0, kernel-rt-debug-modules 5.14.0-70.80.1.rt21.151.el9_0, kernel-rt-modules-extra 5.14.0-70.80.1.rt21.151.el9_0, +2 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7389
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-core 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-modules 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-debug-core 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-modules-core 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-debug-modules 5.14.0-284.40.1.rt14.325.el9_2, +4 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7379
  • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-kvm 4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-core 4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-modules 4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-debug-kvm 4.18.0-513.9.1.rt7.311.el8_9, kernel-rt-debug-core 4.18.0-513.9.1.rt7.311.el8_9, +4 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7548
  • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-362.18.1.el9_3, kernel-rt-kvm 5.14.0-362.18.1.el9_3, kernel-rt-core 5.14.0-362.18.1.el9_3, kernel-rt-modules 5.14.0-362.18.1.el9_3, kernel-rt-debug-kvm 5.14.0-362.18.1.el9_3, kernel-rt-debug-core 5.14.0-362.18.1.el9_3, +6 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0461
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt 5.14.0-70.80.1.rt21.151.el9_0, kernel-rt-kvm 5.14.0-70.80.1.rt21.151.el9_0, kernel-rt-core 5.14.0-70.80.1.rt21.151.el9_0, kernel-rt-modules 5.14.0-70.80.1.rt21.151.el9_0, kernel-rt-debug-kvm 5.14.0-70.80.1.rt21.151.el9_0, kernel-rt-debug-core 5.14.0-70.80.1.rt21.151.el9_0, +4 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7389
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-kvm 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-core 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-modules 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-debug-kvm 5.14.0-284.40.1.rt14.325.el9_2, kernel-rt-debug-core 5.14.0-284.40.1.rt14.325.el9_2, +6 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2023:7379
  • Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2) kernel-rt 4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-kvm 4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-core 4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-modules 4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-debug-kvm 4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-debug-core 4.18.0-193.133.1.rt13.184.el8_2, +4 more Red Hat Enterprise Linux Real Time TUS (v. 8.2) kernel-rt 4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-core 4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-modules 4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-debug-core 4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-debug-modules 4.18.0-193.133.1.rt13.184.el8_2, kernel-rt-modules-extra 4.18.0-193.133.1.rt13.184.el8_2, +2 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:2008
  • Red Hat Enterprise Linux RT TUS (v.8.4) kernel-rt 4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-core 4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-modules 4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-debug-core 4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-debug-modules 4.18.0-305.120.1.rt7.196.el8_4, kernel-rt-modules-extra 4.18.0-305.120.1.rt7.196.el8_4, +2 more
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0563
  • Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.87.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.87.1.el8_6
    fixed: vendor fix “To mitigate this issue, prevent the tun module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.” RHSA-2024:0412
  • 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 EUS (v.9.2) kernel-doc 5.14.0-284.40.1.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 SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
20 mo ago

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 28% 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

  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
  • Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
  • Red Hat Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7

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.