01 Record
CVE-2023-31248
Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability
HighPUBLISHEDCNA: canonical
CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
02 Description
Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability
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.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 1.89% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 79.3% 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 2026-06-17.
- 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
- 2023-07-05 18:33Z3 YR AGO
- Last updated
- 2025-03-05 18:54Z1 YR AGO
- Reserved
- 2023-06-29
- Assigning CNA
- canonical
- 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
- 5.1
- Document digest
- 1b7826f4a46c481d305dd3994e4c06acd3f352000fd4d711a67072e36549ec67
05 Affected products
VendorProductVersionsPlatforms
06 References
- lore.kernel.orghttps://lore.kernel.org/netfilter-devel/20230705121627.GC19489@breakpoint.cc/T/
- www.openwall.comhttps://www.openwall.com/lists/oss-security/2023/07/05/2
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2023/07/05/2
- www.debian.orghttps://www.debian.org/security/2023/dsa-5453
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPHI46ROSSLVAV4R5LJWJYU747JGOS6D/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGZC5XOANA75OJ4XARBBXYSLDKUIJI5E/
- packetstormsecurity.comhttp://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/08/msg00001.html
- packetstormsecurity.comhttp://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20240201-0001/
07 Fixed in
AlmaLinux 9
- bpftool Fixed in 7.0.0-284.30.1.el9_2
- kernel Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug-devel Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug-devel-matched Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug-modules Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug-modules-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug-modules-extra Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-devel Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-devel-matched Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-modules Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-modules-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-modules-extra Fixed in 5.14.0-284.30.1.el9_2
- kernel-abi-stablelists Fixed in 5.14.0-284.30.1.el9_2
- kernel-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-devel Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-devel-matched Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-modules Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-modules-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-modules-extra Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-uki-virt Fixed in 5.14.0-284.30.1.el9_2
- kernel-devel Fixed in 5.14.0-284.30.1.el9_2
- kernel-devel-matched Fixed in 5.14.0-284.30.1.el9_2
- kernel-modules Fixed in 5.14.0-284.30.1.el9_2
- kernel-modules-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-modules-extra Fixed in 5.14.0-284.30.1.el9_2
- kernel-rt Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-core Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug-core Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug-devel Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug-kvm Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug-modules Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug-modules-core Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug-modules-extra Fixed in 5.14.0-284.30.1.rt14.315.el9_2
19 further packages in AlmaLinux 9 not shown (first 40 listed).
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- bpftool Fixed in 7.0.0-284.30.1.el9_2
- kernel Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug-devel Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug-devel-matched Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug-modules Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug-modules-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-debug-modules-extra Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-devel Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-devel-matched Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-modules Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-modules-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-64k-modules-extra Fixed in 5.14.0-284.30.1.el9_2
- kernel-abi-stablelists Fixed in 5.14.0-284.30.1.el9_2
- kernel-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-devel Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-devel-matched Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-modules Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-modules-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-modules-extra Fixed in 5.14.0-284.30.1.el9_2
- kernel-debug-uki-virt Fixed in 5.14.0-284.30.1.el9_2
- kernel-devel Fixed in 5.14.0-284.30.1.el9_2
- kernel-devel-matched Fixed in 5.14.0-284.30.1.el9_2
- kernel-modules Fixed in 5.14.0-284.30.1.el9_2
- kernel-modules-core Fixed in 5.14.0-284.30.1.el9_2
- kernel-modules-extra Fixed in 5.14.0-284.30.1.el9_2
- kernel-rt Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-core Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug-core Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug-devel Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug-kvm Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug-modules Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug-modules-core Fixed in 5.14.0-284.30.1.rt14.315.el9_2
- kernel-rt-debug-modules-extra Fixed in 5.14.0-284.30.1.rt14.315.el9_2
19 further packages in CloudLinux 9 not shown (first 40 listed).
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 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 6.1.38-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.4.4-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 6.4.4-1
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 5.15.0-1040.45~20.04.1
- 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 5.15.0-1042.49~20.04.1
- linux-azure-5.8 No fix yet
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.15 Fixed in 5.15.0-1038.46~20.04.1
- linux-gcp-5.8 No fix yet
- linux-gke-5.15 Fixed in 5.15.0-1038.43~20.04.1
- linux-gkeop-5.15 Fixed in 5.15.0-1024.29~20.04.1
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.15 Fixed in 5.15.0-78.85~20.04.1
- linux-hwe-5.8 No fix yet
- linux-intel-5.13 No fix yet
- linux-intel-iotg-5.15 Fixed in 5.15.0-1036.41~20.04.1
- linux-lowlatency-hwe-5.15 Fixed in 5.15.0-78.85~20.04.1
- 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-5.11 No fix yet
- linux-oracle-5.13 No fix yet
- linux-oracle-5.15 Fixed in 5.15.0-1039.45~20.04.1
- 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 5.15.0-1037.41~20.04.2
- 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 5.15.0-78.85
- linux-aws Fixed in 5.15.0-1040.45
- linux-aws-5.19 Fixed in 5.19.0-1029.30~22.04.1
- linux-aws-6.2 No fix yet
- linux-azure Fixed in 5.15.0-1042.49
- linux-azure-5.19 No fix yet
- linux-azure-6.2 No fix yet
- linux-azure-fde Fixed in 5.15.0-1042.49.1
- linux-azure-fde-5.19 No fix yet
- linux-azure-fde-6.2 No fix yet
- linux-gcp Fixed in 5.15.0-1038.46
- linux-gcp-5.19 Fixed in 5.19.0-1030.32~22.04.1
- linux-gcp-6.2 No fix yet
- linux-gke Fixed in 5.15.0-1038.43
- linux-gkeop Fixed in 5.15.0-1024.29
- linux-hwe-5.19 Fixed in 5.19.0-50.50
- linux-hwe-6.2 Fixed in 6.2.0-26.26~22.04.1
- linux-ibm Fixed in 5.15.0-1034.37
- linux-intel-iotg Fixed in 5.15.0-1036.41
- linux-kvm Fixed in 5.15.0-1038.43
- linux-lowlatency Fixed in 5.15.0-78.85
- linux-lowlatency-hwe-5.19 No fix yet
- linux-lowlatency-hwe-6.2 No fix yet
- linux-nvidia Fixed in 5.15.0-1029.29
- linux-nvidia-6.2 No fix yet
- 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 Fixed in 5.17.0-1035.36
- linux-oem-6.0 Fixed in 6.0.0-1020.20
- linux-oem-6.1 Fixed in 6.1.0-1019.19
- linux-oracle Fixed in 5.15.0-1039.45
- linux-raspi Fixed in 5.15.0-1034.37
- linux-realtime No fix yet
- linux-riscv No fix yet
- linux-riscv-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 5.15.0-1021.23
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 Realtime 22.04 LTS
- linux-intel-iot-realtime Fixed in 5.15.0-1035.37Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 5.15.0-1042.47Available 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.