CVE-2023-6817
Use-after-free in Linux kernel's netfilter: nf_tables component
02 Description
Use-after-free in Linux kernel's netfilter: nf_tables component
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.33% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 26.4% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (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:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-14.
- 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
- 2023-12-18 14:37Z2 YR AGO
- Last updated
- 2026-10-14 22:15Z14 DAYS AGO
- Reserved
- 2023-12-14
- Assigning CNA
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.8)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416Use After FreeVariant
- Data version
- 5.2
- Document digest
- 0d22536388bd87122d89084d536ff54793268a5850acf34680a215899981b598
05 Affected products
06 References
- git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=317eb9685095678f2c9f5a8189de698c5354316a
- kernel.dancehttps://kernel.dance/317eb9685095678f2c9f5a8189de698c5354316a
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2023/12/22/6
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2023/12/22/13
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
- packetstormsecurity.comhttp://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-265688.html
07 Fixed in
AlmaLinux 8
- bpftool Fixed in 4.18.0-513.18.1.el8_9
- kernel Fixed in 4.18.0-513.18.1.el8_9
- kernel-abi-stablelists Fixed in 4.18.0-513.18.1.el8_9
- kernel-core Fixed in 4.18.0-513.18.1.el8_9
- kernel-cross-headers Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-core Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-modules Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-modules-extra Fixed in 4.18.0-513.18.1.el8_9
- kernel-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-doc Fixed in 4.18.0-513.18.1.el8_9
- kernel-modules Fixed in 4.18.0-513.18.1.el8_9
- kernel-modules-extra Fixed in 4.18.0-513.18.1.el8_9
- kernel-tools Fixed in 4.18.0-513.18.1.el8_9
- kernel-tools-libs Fixed in 4.18.0-513.18.1.el8_9
- kernel-tools-libs-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-core Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-modules Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-modules-extra Fixed in 4.18.0-513.18.1.el8_9
- perf Fixed in 4.18.0-513.18.1.el8_9
- python3-perf Fixed in 4.18.0-513.18.1.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 4.18.0-513.18.1.el8_9
- kernel Fixed in 4.18.0-513.18.1.el8_9
- kernel-abi-stablelists Fixed in 4.18.0-513.18.1.el8_9
- kernel-core Fixed in 4.18.0-513.18.1.el8_9
- kernel-cross-headers Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-core Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-modules Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-modules-extra Fixed in 4.18.0-513.18.1.el8_9
- kernel-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-doc Fixed in 4.18.0-513.18.1.el8_9
- kernel-modules Fixed in 4.18.0-513.18.1.el8_9
- kernel-modules-extra Fixed in 4.18.0-513.18.1.el8_9
- kernel-tools Fixed in 4.18.0-513.18.1.el8_9
- kernel-tools-libs Fixed in 4.18.0-513.18.1.el8_9
- kernel-tools-libs-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-core Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-modules Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-modules-extra Fixed in 4.18.0-513.18.1.el8_9
- perf Fixed in 4.18.0-513.18.1.el8_9
- python3-perf Fixed in 4.18.0-513.18.1.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 6.1.69-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.6.8-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 6.6.8-1
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-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-aws-5.11 No fix yet
- linux-aws-5.13 No fix yet
- linux-aws-5.15 Fixed in 5.15.0-1052.57~20.04.1
- linux-aws-5.8 No fix yet
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.15 Fixed in 5.15.0-1054.62~20.04.1
- linux-azure-5.8 No fix yet
- linux-azure-fde No fix yet
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.15 Fixed in 5.15.0-1049.57~20.04.1
- linux-gcp-5.8 No fix yet
- linux-gke No fix yet
- linux-gke-5.15 No fix yet
- linux-gkeop-5.15 Fixed in 5.15.0-1035.41~20.04.1
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.15 Fixed in 5.15.0-92.102~20.04.1
- linux-hwe-5.8 No fix yet
- linux-ibm-5.15 Fixed in 5.15.0-1045.48~20.04.1
- linux-intel-5.13 No fix yet
- linux-intel-iotg-5.15 Fixed in 5.15.0-1048.54~20.04.1
- linux-lowlatency-hwe-5.15 Fixed in 5.15.0-92.102~20.04.1
- linux-nvidia-tegra-5.15 Fixed in 5.15.0-1022.22~20.04.1
- 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-5.11 No fix yet
- linux-oracle-5.13 No fix yet
- linux-oracle-5.15 Fixed in 5.15.0-1050.56~20.04.1
- linux-oracle-5.8 No fix yet
- linux-raspi2 No fix yet
- linux-riscv No fix yet
- linux-riscv-5.11 No fix yet
- linux-riscv-5.15 Fixed in 5.15.0-1048.52~20.04.1
- linux-riscv-5.8 No fix yet
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 5.15.0-92.102
- linux-allwinner-5.19 No fix yet
- linux-aws Fixed in 5.15.0-1052.57
- linux-aws-5.19 No fix yet
- linux-aws-6.2 Fixed in 6.2.0-1018.18~22.04.1
- linux-aws-6.5 Fixed in 6.5.0-1012.12~22.04.1
- linux-azure Fixed in 5.15.0-1054.62
- linux-azure-5.19 No fix yet
- linux-azure-6.2 Fixed in 6.2.0-1019.19~22.04.1
- linux-azure-6.5 Fixed in 6.5.0-1011.11~22.04.1
- linux-azure-fde Fixed in 5.15.0-1054.62.1
- linux-azure-fde-5.19 No fix yet
- linux-azure-fde-6.2 Fixed in 6.2.0-1019.19~22.04.1.1
- linux-gcp Fixed in 5.15.0-1049.57
- linux-gcp-5.19 No fix yet
- linux-gcp-6.2 Fixed in 6.2.0-1021.23~22.04.1
- linux-gcp-6.5 Fixed in 6.5.0-1011.11~22.04.1
- linux-gke Fixed in 5.15.0-1049.54
- linux-gkeop Fixed in 5.15.0-1035.41
- linux-hwe-5.19 No fix yet
- linux-hwe-6.2 No fix yet
- linux-hwe-6.5 Fixed in 6.5.0-15.15~22.04.1
- linux-ibm Fixed in 5.15.0-1045.48
- linux-intel-iotg Fixed in 5.15.0-1047.53
- linux-kvm Fixed in 5.15.0-1049.54
- linux-lowlatency Fixed in 5.15.0-92.102
- linux-lowlatency-hwe-5.19 No fix yet
- linux-lowlatency-hwe-6.2 No fix yet
- linux-lowlatency-hwe-6.5 Fixed in 6.5.0-15.15.1.1~22.04.1
- linux-nvidia Fixed in 5.15.0-1043.43
- linux-nvidia-6.2 Fixed in 6.2.0-1015.15
- linux-nvidia-6.5 Fixed in 6.5.0-1014.14
- linux-nvidia-tegra Fixed in 5.15.0-1021.21
- linux-nvidia-tegra-igx Fixed in 5.15.0-1008.8
- linux-oem-5.17 No fix yet
- linux-oem-6.0 No fix yet
- linux-oem-6.1 Fixed in 6.1.0-1029.29
- linux-oem-6.5 Fixed in 6.5.0-1013.14
- linux-oracle Fixed in 5.15.0-1050.56
- linux-oracle-6.5 Fixed in 6.5.0-1014.14~22.04.1
7 further packages in Ubuntu 22.04 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 24.04 LTS
- linux-raspi Fixed in 6.7.0-1001.1
- 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 5.15.0-1033.35
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 20.04 LTS
- linux-bluefield 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-preview 22.04 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 FIPS-updates 22.04 LTS
- linux-gcp-fips Fixed in 5.15.0-1055.63+fips2Available 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 Realtime 22.04 LTS
- linux-intel-iot-realtime Fixed in 5.15.0-1046.48Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 5.15.0-1053.59Available 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.