CVE-2023-2163
Incorrect Verifier Branch Pruning Logic Leads To Arbitrary Read/Write In Linux Kernel and Lateral Privilege Escalation
02 Description
Incorrect Verifier Branch Pruning Logic Leads To Arbitrary Read/Write In Linux Kernel and Lateral Privilege Escalation
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 3.63% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 89.3% of scored records. A rank, not a probability.
- NVD base score
- 8.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2023-09-20 05:02Z3 YR AGO
- Last updated
- 2025-02-27 20:49Z1 YR AGO
- Reserved
- 2023-04-18
- Assigning CNA
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 10.0)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
- Weaknesses
- CWE-682Incorrect CalculationPillar
- Data version
- 5.1
- Document digest
- 930fa0c7479363179f55fd6aef343f01e892dd87301bea8050bc691f860c469a
05 Affected products
06 References
07 Fixed in
AlmaLinux 8
- bpftool Fixed in 4.18.0-513.9.1.el8_9
- kernel Fixed in 4.18.0-513.9.1.el8_9
- kernel-abi-stablelists Fixed in 4.18.0-513.9.1.el8_9
- kernel-core Fixed in 4.18.0-513.9.1.el8_9
- kernel-cross-headers Fixed in 4.18.0-513.9.1.el8_9
- kernel-debug Fixed in 4.18.0-513.9.1.el8_9
- kernel-debug-core Fixed in 4.18.0-513.9.1.el8_9
- kernel-debug-devel Fixed in 4.18.0-513.9.1.el8_9
- kernel-debug-modules Fixed in 4.18.0-513.9.1.el8_9
- kernel-debug-modules-extra Fixed in 4.18.0-513.9.1.el8_9
- kernel-devel Fixed in 4.18.0-513.9.1.el8_9
- kernel-doc Fixed in 4.18.0-513.9.1.el8_9
- kernel-modules Fixed in 4.18.0-513.9.1.el8_9
- kernel-modules-extra Fixed in 4.18.0-513.9.1.el8_9
- kernel-tools Fixed in 4.18.0-513.9.1.el8_9
- kernel-tools-libs Fixed in 4.18.0-513.9.1.el8_9
- kernel-tools-libs-devel Fixed in 4.18.0-513.9.1.el8_9
- kernel-zfcpdump Fixed in 4.18.0-513.9.1.el8_9
- kernel-zfcpdump-core Fixed in 4.18.0-513.9.1.el8_9
- kernel-zfcpdump-devel Fixed in 4.18.0-513.9.1.el8_9
- kernel-zfcpdump-modules Fixed in 4.18.0-513.9.1.el8_9
- kernel-zfcpdump-modules-extra Fixed in 4.18.0-513.9.1.el8_9
- perf Fixed in 4.18.0-513.9.1.el8_9
- python3-perf Fixed in 4.18.0-513.9.1.el8_9
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- bpftool Fixed in 4.18.0-513.9.1.el8_9
- kernel Fixed in 4.18.0-513.9.1.el8_9
- kernel-abi-stablelists Fixed in 4.18.0-513.9.1.el8_9
- kernel-core Fixed in 4.18.0-513.9.1.el8_9
- kernel-cross-headers Fixed in 4.18.0-513.9.1.el8_9
- kernel-debug Fixed in 4.18.0-513.9.1.el8_9
- kernel-debug-core Fixed in 4.18.0-513.9.1.el8_9
- kernel-debug-devel Fixed in 4.18.0-513.9.1.el8_9
- kernel-debug-modules Fixed in 4.18.0-513.9.1.el8_9
- kernel-debug-modules-extra Fixed in 4.18.0-513.9.1.el8_9
- kernel-devel Fixed in 4.18.0-513.9.1.el8_9
- kernel-doc Fixed in 4.18.0-513.9.1.el8_9
- kernel-modules Fixed in 4.18.0-513.9.1.el8_9
- kernel-modules-extra Fixed in 4.18.0-513.9.1.el8_9
- kernel-tools Fixed in 4.18.0-513.9.1.el8_9
- kernel-tools-libs Fixed in 4.18.0-513.9.1.el8_9
- kernel-tools-libs-devel Fixed in 4.18.0-513.9.1.el8_9
- kernel-zfcpdump Fixed in 4.18.0-513.9.1.el8_9
- kernel-zfcpdump-core Fixed in 4.18.0-513.9.1.el8_9
- kernel-zfcpdump-devel Fixed in 4.18.0-513.9.1.el8_9
- kernel-zfcpdump-modules Fixed in 4.18.0-513.9.1.el8_9
- kernel-zfcpdump-modules-extra Fixed in 4.18.0-513.9.1.el8_9
- perf Fixed in 4.18.0-513.9.1.el8_9
- python3-perf Fixed in 4.18.0-513.9.1.el8_9
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- linux Fixed in 6.1.27-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.1.27-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 6.1.27-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux-hwe-edge No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- linux-aws-5.0 No fix yet
- linux-aws-5.3 No fix yet
- linux-azure No fix yet
- linux-azure-5.3 No fix yet
- linux-azure-edge No fix yet
- linux-gcp No fix yet
- linux-gcp-5.3 No fix yet
- linux-gke-4.15 No fix yet
- linux-gke-5.4 No fix yet
- linux-gkeop-5.4 No fix yet
- linux-hwe No fix yet
- linux-hwe-edge No fix yet
- linux-oem No fix yet
- linux-oracle-5.0 No fix yet
- linux-oracle-5.3 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux Fixed in 5.4.0-162.179
- linux-aws Fixed in 5.4.0-1109.118
- linux-aws-5.11 No fix yet
- linux-aws-5.13 No fix yet
- linux-aws-5.15 Fixed in 5.15.0-1041.46~20.04.1
- linux-aws-5.8 No fix yet
- linux-azure Fixed in 5.4.0-1115.122
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.15 Fixed in 5.15.0-1045.52~20.04.1
- linux-azure-5.8 No fix yet
- linux-azure-fde No fix yet
- linux-bluefield Fixed in 5.4.0-1070.76
- linux-gcp Fixed in 5.4.0-1112.121
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.15 Fixed in 5.15.0-1039.47~20.04.1
- linux-gcp-5.8 No fix yet
- linux-gke No fix yet
- linux-gke-5.15 Fixed in 5.15.0-1039.44~20.04.1
- linux-gkeop Fixed in 5.4.0-1076.80
- linux-gkeop-5.15 Fixed in 5.15.0-1025.30~20.04.1
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.15 Fixed in 5.15.0-79.86~20.04.2
- linux-hwe-5.8 No fix yet
- linux-ibm Fixed in 5.4.0-1056.61
- linux-ibm-5.15 Fixed in 5.15.0-1036.39~20.04.1
- linux-intel-5.13 No fix yet
- linux-intel-iotg-5.15 Fixed in 5.15.0-1037.42~20.04.1
- linux-iot Fixed in 5.4.0-1021.22
- linux-kvm Fixed in 5.4.0-1098.104
- linux-lowlatency-hwe-5.15 Fixed in 5.15.0-79.88~20.04.1
- linux-nvidia-tegra-5.15 Fixed in 5.15.0-1016.16~20.04.1
- linux-oem-5.10 No fix yet
- linux-oem-5.13 No fix yet
- linux-oem-5.14 No fix yet
- linux-oem-5.6 No fix yet
- linux-oracle Fixed in 5.4.0-1108.117
- linux-oracle-5.11 No fix yet
10 further packages in Ubuntu 20.04 LTS not shown (first 40 listed).
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- linux Fixed in 5.15.0-79.86
- linux-allwinner-5.19 No fix yet
- linux-aws Fixed in 5.15.0-1042.47
- linux-aws-5.19 No fix yet
- linux-aws-6.2 Fixed in 6.2.0-1007.7~22.04.1
- linux-azure Fixed in 5.15.0-1045.52
- linux-azure-5.19 No fix yet
- linux-azure-fde Fixed in 5.15.0-1044.51.1
- linux-azure-fde-5.19 No fix yet
- linux-gcp Fixed in 5.15.0-1039.47
- linux-gcp-5.19 No fix yet
- linux-gke Fixed in 5.15.0-1039.44
- linux-gkeop Fixed in 5.15.0-1025.30
- linux-hwe-5.19 No fix yet
- linux-ibm Fixed in 5.15.0-1035.38
- linux-intel-iotg Fixed in 5.15.0-1037.42
- linux-kvm Fixed in 5.15.0-1039.44
- linux-lowlatency Fixed in 5.15.0-79.88
- linux-lowlatency-hwe-5.19 No fix yet
- linux-nvidia Fixed in 5.15.0-1030.30
- linux-nvidia-6.2 Fixed in 6.2.0-1009.9
- linux-nvidia-tegra Fixed in 5.15.0-1016.16
- linux-nvidia-tegra-igx Fixed in 5.15.0-1002.2
- linux-oem-5.17 No fix yet
- linux-oem-6.0 Fixed in 6.0.0-1021.21
- linux-oem-6.1 Fixed in 6.1.0-1014.14
- linux-oracle Fixed in 5.15.0-1040.46
- linux-raspi Fixed in 5.15.0-1035.38
- linux-realtime No fix yet
- linux-riscv No fix yet
- linux-riscv-5.19 No fix yet
- linux-starfive-5.19 No fix yet
- linux-xilinx-zynqmp Fixed in 5.15.0-1025.29
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux-raspi-realtime No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Nvidia-BlueField 22.04 LTS
- linux-bluefield Fixed in 5.15.0-1022.24
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- linux-aws-5.4 Fixed in 5.4.0-1109.118~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure-5.4 Fixed in 5.4.0-1115.122~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp-5.4 Fixed in 5.4.0-1112.121~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-hwe-5.4 Fixed in 5.4.0-162.179~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-ibm-5.4 Fixed in 5.4.0-1056.61~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle-5.4 Fixed in 5.4.0-1108.117~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-raspi-5.4 Fixed in 5.4.0-1093.104~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-preview 22.04 LTS
- linux-fips No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 20.04 LTS
- linux-aws-fips Fixed in 5.4.0-1109.118+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 5.4.0-1115.122+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 5.4.0-1084.93Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 5.4.0-1112.121+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS 20.04 LTS
- linux-aws-fips No fix yet
- linux-azure-fips No fix yet
- linux-fips No fix yet
- linux-gcp-fips No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro Realtime 22.04 LTS
- linux-intel-iot-realtime Fixed in 5.15.0-1036.38Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 5.15.0-1043.48Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.