Vulnerability · Published Oct 5, 2023 · Assigned by redhat
CVE-2023-42755Kernel: rsvp: out-of-bounds read in rsvp_classify()
Medium 6.5
In plain English
A medium-severity out-of-bounds read in Red Hat Enterprise Linux 6 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 65.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-core | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-debug | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-devel | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-doc | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-headers | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-modules | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-rt | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux:8 | kernel-rt-core | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux:8 | kernel-rt-debug | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux:8 | kernel-rt-debug-core | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux:8 | kernel-rt-debug-devel | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux:8 | kernel-rt-debug-kvm | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux:8 | kernel-rt-debug-modules | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux:8 | kernel-rt-devel | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux:8 | kernel-rt-kvm | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux:8 | kernel-rt-modules | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux:8 | kernel-rt-modules-extra | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux:8 | kernel-tools | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | perf | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| AlmaLinux:8 | python3-perf | 4.18.0-553.el8_10 | ALSA-2024:3138 |
| Debian:12 | linux | 6.1.55-1 | DEBIAN-CVE-2023-42755 |
| Debian:13 | linux | 6.3.7-1 | DEBIAN-CVE-2023-42755 |
| Debian:14 | linux | 6.3.7-1 | DEBIAN-CVE-2023-42755 |
| Rocky Linux:8 | kernel | 0:4.18.0-553.el8_10 | RLSA-2024:3138 |
| Rocky Linux:8 | kernel | 0:4.18.0-553.123.1.el8_10.cloud.0.1 | RXSA-2024:3138 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-553.rt7.342.el8_10 | RLSA-2024:2950 |
| Ubuntu:22.04:LTS | linux | 5.15.0-87.97 | USN-6446-1 |
| Ubuntu:22.04:LTS | linux | 5.15.0-87.97 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1048.53 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1048.53 | USN-6446-1 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | 6.2.0-1014.14~22.04.1 | USN-6444-1 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | 6.2.0-1014.14~22.04.1 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1050.57 | USN-6446-1 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1050.57 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | 6.2.0-1015.15~22.04.1 | USN-6444-1 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | 6.2.0-1015.15~22.04.1 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1050.57.1 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1050.57.1 | USN-6446-1 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | 6.2.0-1015.15~22.04.1.1 | UBUNTU-CVE-2023-42755 |
| 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 | 5.15.0-1045.53 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | 6.2.0-1017.19~22.04.1 | UBUNTU-CVE-2023-42755 |
| 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 | 5.15.0-1045.50 | USN-6446-1 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1045.50 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1031.37 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1031.37 | USN-6446-1 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | 6.2.0-35.35~22.04.1 | UBUNTU-CVE-2023-42755 |
| 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 | 5.15.0-1041.44 | USN-6446-1 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1041.44 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1043.49 | USN-6445-1 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1043.49 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1045.50 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1045.50 | USN-6446-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-87.96 | USN-6446-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-87.96 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | 6.2.0-1015.15~22.04.1 | USN-6444-1 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | 6.2.0-1015.15~22.04.1 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1039.39 | UBUNTU-CVE-2023-42755 |
| 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-6.2 | 6.2.0-1011.11 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1019.19 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1006.6 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | 6.1.0-1024.24 | USN-6443-1 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | 6.1.0-1024.24 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1046.52 | USN-6446-1 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1046.52 | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1041.44 | USN-6446-1 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1041.44 | UBUNTU-CVE-2023-42755 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2023-42755 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | 6.2.0-1007.8~22.04.1 | UBUNTU-CVE-2023-42755 |
| 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-CVE-2023-42755 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
References
- RHSA-2024:2950 vendor-advisory, x_refsource_REDHAT
- RHSA-2024:3138 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2023-42755 vdb-entry, x_refsource_REDHAT
- RHBZ#2239847 issue-tracking, x_refsource_REDHAT
- https://seclists.org/oss-sec/2023/q3/229
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html x_transferred
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html x_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html