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OpenAdvisories
Medium · 6.5 CVE-2023-42755 EUVD-2023-47187GHSA-qhrq-6m4q-9x2x

Kernel: rsvp: out-of-bounds read in rsvp_classify()

Published Oct 5, 2023 · Updated Nov 7, 2026 · Assigned by redhat

Vendor: Red Hat Product: Red Hat Enterprise Linux 6 Product: Red Hat Enterprise Linux 7 Product: Red Hat Enterprise Linux 8 Product: Red Hat Enterprise Linux 9 Package: kernel Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Azure Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

A flaw was found in the IPv4 Resource Reservation Protocol (RSVP) classifier in the Linux kernel. The xprt pointer may go beyond the linear part of the skb, leading to an out-of-bounds read in the `rsvp_classify` function. This issue may allow a local user to crash the system and cause a denial of service.

Affected products

VendorProductAffectedFixed
Red Hat Red Hat Enterprise Linux 8 — —
Red Hat Red Hat Enterprise Linux 6 — —
Red Hat Red Hat Enterprise Linux 7 — —
Red Hat Red Hat Enterprise Linux 9 — —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 6.3.7-1 —
Debian 13 linux 6.3.7-1 —
Debian 12 linux 6.1.55-1 —
Debian 10 linux 4.19.304-1 DLA-3710-1
Debian 10 linux-5.10 5.10.197-1~deb10u1 DLA-3623-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1028.30 —
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux 5.15.0-87.97 USN-6446-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1048.53 USN-6446-1
Ubuntu 22.04 LTS linux-aws-6.2 6.2.0-1014.14~22.04.1 USN-6444-1
Ubuntu 22.04 LTS linux-azure 5.15.0-1050.57 USN-6446-1
Ubuntu 22.04 LTS linux-azure-6.2 +1 6.2.0-1015.15~22.04.1 USN-6444-1
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1050.57.1 USN-6446-1
Ubuntu 22.04 LTS linux-azure-fde-6.2 6.2.0-1015.15~22.04.1.1 USN-6444-1
Ubuntu 22.04 LTS linux-gcp 5.15.0-1045.53 USN-6446-1
Ubuntu 22.04 LTS linux-gcp-6.2 6.2.0-1017.19~22.04.1 USN-6444-1
Ubuntu 22.04 LTS linux-gke +1 5.15.0-1045.50 USN-6446-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1031.37 USN-6446-1
Ubuntu 22.04 LTS linux-hwe-6.2 6.2.0-35.35~22.04.1 USN-6444-1
Ubuntu 22.04 LTS linux-ibm +1 5.15.0-1041.44 USN-6446-1
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1043.49 USN-6445-1
Ubuntu 22.04 LTS linux-lowlatency 5.15.0-87.96 USN-6446-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1039.39 USN-6446-1
Ubuntu 22.04 LTS linux-nvidia-6.2 6.2.0-1011.11 USN-6466-1
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1019.19 —
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1006.6 —
Ubuntu 22.04 LTS linux-oem-6.1 6.1.0-1024.24 USN-6443-1
Ubuntu 22.04 LTS linux-oracle 5.15.0-1046.52 USN-6446-1
Ubuntu 22.04 LTS linux-riscv +12 No fix yet —
Ubuntu 22.04 LTS linux-starfive-6.2 6.2.0-1007.8~22.04.1 USN-6444-2
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1025.29 —
Ubuntu 20.04 LTS linux 5.4.0-165.182 USN-6441-1
Ubuntu 20.04 LTS linux-aws 5.4.0-1112.121 USN-6441-1
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1048.53~20.04.1 USN-6446-1
Ubuntu 20.04 LTS linux-azure 5.4.0-1118.125 USN-6441-1
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1050.57~20.04.1 USN-6446-1
Ubuntu 20.04 LTS linux-azure-fde-5.15 5.15.0-1050.57~20.04.1.1 USN-6446-1
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1073.79 USN-6442-1
Ubuntu 20.04 LTS linux-gcp 5.4.0-1116.125 USN-6441-1
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1045.53~20.04.2 USN-6446-2
Ubuntu 20.04 LTS linux-gke +26 No fix yet —
Ubuntu 20.04 LTS linux-gkeop 5.4.0-1079.83 USN-6441-1
Ubuntu 20.04 LTS linux-gkeop-5.15 5.15.0-1031.37~20.04.1 USN-6446-2
Ubuntu 20.04 LTS linux-hwe-5.15 5.15.0-87.97~20.04.1 USN-6446-1
Ubuntu 20.04 LTS linux-ibm 5.4.0-1059.64 USN-6441-1
Ubuntu 20.04 LTS linux-ibm-5.15 5.15.0-1041.44~20.04.1 USN-6446-1
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1043.49~20.04.1 USN-6445-2
Ubuntu 20.04 LTS linux-iot 5.4.0-1024.25 USN-6441-3
Ubuntu 20.04 LTS linux-kvm 5.4.0-1101.107 USN-6441-1
Ubuntu 20.04 LTS linux-lowlatency-hwe-5.15 5.15.0-87.96~20.04.1 USN-6446-1
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1019.19~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1111.120 USN-6441-1
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1046.52~20.04.1 USN-6446-3
Ubuntu 20.04 LTS linux-raspi 5.4.0-1096.107 USN-6441-3
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1044.48~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1032.36 USN-6441-1
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Show 12 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1041.43 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1049.55 —
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1112.121+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1118.125+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1087.96 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1116.125+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2101.107 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2080.86 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1117.128 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2064.69 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips 4.4.0-1094.101 —
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips No fix yet —
Ubuntu Pro 18.04 LTS linux 4.15.0-219.230 USN-6440-1
Ubuntu Pro 18.04 LTS linux-aws 4.15.0-1162.175 USN-6440-1
Ubuntu Pro 18.04 LTS linux-aws-5.4 5.4.0-1112.121~18.04.2 USN-6441-1
Ubuntu Pro 18.04 LTS linux-azure-4.15 4.15.0-1171.186 USN-6440-1
Ubuntu Pro 18.04 LTS linux-azure-5.4 5.4.0-1118.125~18.04.1 USN-6441-1
Ubuntu Pro 18.04 LTS linux-gcp-4.15 4.15.0-1156.173 USN-6440-1
Ubuntu Pro 18.04 LTS linux-gcp-5.4 5.4.0-1116.125~18.04.1 USN-6441-2
Ubuntu Pro 18.04 LTS linux-hwe-5.4 5.4.0-165.182~18.04.1 USN-6441-1
Ubuntu Pro 18.04 LTS linux-ibm-5.4 5.4.0-1059.64~18.04.1 USN-6441-1
Ubuntu Pro 18.04 LTS linux-kvm 4.15.0-1146.151 USN-6440-1
Ubuntu Pro 18.04 LTS linux-oracle 4.15.0-1125.136 USN-6440-1
Ubuntu Pro 18.04 LTS linux-oracle-5.4 5.4.0-1111.120~18.04.1 USN-6441-1
Ubuntu Pro 18.04 LTS linux-raspi-5.4 5.4.0-1096.107~18.04.1 USN-6441-3
Ubuntu Pro 16.04 LTS linux 4.4.0-246.280 USN-6439-1
Ubuntu Pro 16.04 LTS linux-aws 4.4.0-1162.177 USN-6439-1
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1162.175~16.04.1 USN-6440-3
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1171.186~16.04.1 USN-6440-1
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1156.173~16.04.1 USN-6440-1
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-219.230~16.04.1 USN-6440-1
Ubuntu Pro 16.04 LTS linux-kvm 4.4.0-1125.135 USN-6439-1
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1125.136~16.04.1 USN-6440-1
Ubuntu Pro 14.04 LTS linux 3.13.0-194.245 USN-6460-1
Ubuntu Pro 14.04 LTS linux-aws 4.4.0-1124.130 USN-6439-2
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1171.186~14.04.1 USN-6440-2
Ubuntu Pro 14.04 LTS linux-lts-xenial 4.4.0-246.280~14.04.1 USN-6439-1
ReleasePackageFixed inAdvisory
RHEL 8 kernel-rt +12 4.18.0-553.rt7.342.el8_10 RHSA-2024:2950
RHEL 8 perf +26 4.18.0-553.el8_10 RHSA-2024:3138

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 8 kernel-rt +11 4.18.0-553.rt7.342.el8_10 ALSA-2024:2950
AlmaLinux 8 perf +24 4.18.0-553.el8_10 ALSA-2024:3138

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 8 kernel 4.18.0-553.el8_10 RXSA-2024:3138, RLSA-2024:3138
Rocky Linux 8 kernel-rt 4.18.0-553.rt7.342.el8_10 RLSA-2024:2950
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.68.1 SUSE-SU-2024:2190-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.57.1 SUSE-SU-2024:2019-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.68.1.150500.6.31.1 SUSE-SU-2024:2190-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.188.1 SUSE-SU-2024:1979-1
SLES 12 SP5 kernel-docs +4 4.12.14-122.219.1 SUSE-SU-2024:2184-1
Show 6 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.188.1 SUSE-SU-2024:1979-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.219.1 SUSE-SU-2024:2184-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.188.1 SUSE-SU-2024:1983-1
SLE Micro 5.5 kernel-default 5.14.21-150500.55.68.1 SUSE-SU-2024:2190-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.68.1.150500.6.31.1 SUSE-SU-2024:2190-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.58.1 SUSE-SU-2024:2008-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.68.1 SUSE-SU-2024:2190-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_15 +1 1-150500.11.3.1 SUSE-SU-2024:2190-1, SUSE-SU-2024:2008-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.219.1 SUSE-SU-2024:2184-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_57 1-8.3.1 SUSE-SU-2024:2184-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.58.1 SUSE-SU-2024:2008-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.5 dtb-aarch64 +10 5.14.21-150500.55.68.1 SUSE-SU-2024:2190-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.57.1 SUSE-SU-2024:2019-1
openSUSE Leap 15.5 kernel-default-base 5.14.21-150500.55.68.1.150500.6.31.1 SUSE-SU-2024:2190-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.58.1 SUSE-SU-2024:2008-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 kernel-livepatch-6.1.55-75.123 1.0-0.amzn2023 ALAS2023-2023-356
Amazon Linux 2023 perf +12 6.1.55-75.123.amzn2023 ALAS2023-2023-356
Amazon Linux 2 kernel-livepatch-4.14.326-245.539 1.0-0.amzn2 ALAS2-2023-2264
Amazon Linux 2 perf +8 4.14.326-245.539.amzn2 ALAS2-2023-2264

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 2 (CBL-Mariner) kernel 5.15.135.1-2 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 8 perf +19 4.18.0-553.el8_10 ELSA-2024-3138

Advisories 42

References