Vulnerability · Published Jul 5, 2023 · Assigned by canonical
CVE-2023-31248Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability
High 7.8
In plain English
A high-severity use-after-free in Linux Kernel from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)1.9%top 20.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | bpftool | 7.0.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-core | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-debug | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-debug-core | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-debug-devel | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-debug-devel-matched | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-debug-modules | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-debug-modules-core | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-debug-modules-extra | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-devel | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-devel-matched | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-modules | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-modules-core | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-64k-modules-extra | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-abi-stablelists | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-core | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-debug | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-debug-core | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-debug-devel | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-debug-devel-matched | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-debug-modules | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-debug-modules-core | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-debug-modules-extra | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-debug-uki-virt | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-devel | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-devel-matched | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-modules | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-modules-core | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-modules-extra | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-rt | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-core | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-debug | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-debug-core | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-debug-devel | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-debug-kvm | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-debug-modules | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-debug-modules-core | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-debug-modules-extra | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-devel | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-kvm | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-modules | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-modules-core | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-rt-modules-extra | 5.14.0-284.30.1.rt14.315.el9_2 | ALSA-2023:5091 |
| AlmaLinux:9 | kernel-tools | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-tools-libs | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-tools-libs-devel | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-uki-virt | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-zfcpdump | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-zfcpdump-core | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-zfcpdump-devel | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-zfcpdump-devel-matched | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-zfcpdump-modules | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-zfcpdump-modules-core | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | kernel-zfcpdump-modules-extra | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | perf | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | python3-perf | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| AlmaLinux:9 | rtla | 5.14.0-284.30.1.el9_2 | ALSA-2023:5069 |
| Debian:12 | linux | 6.1.38-1 | DEBIAN-CVE-2023-31248 |
| Debian:13 | linux | 6.4.4-1 | DEBIAN-CVE-2023-31248 |
| Debian:14 | linux | 6.4.4-1 | DEBIAN-CVE-2023-31248 |
| Rocky Linux:9 | kernel-rt | 0:5.14.0-284.30.1.rt14.315.el9_2 | RLSA-2023:5091 |
| Ubuntu:22.04:LTS | linux | 5.15.0-78.85 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux | 5.15.0-78.85 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1040.45 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1040.45 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | 5.19.0-1029.30~22.04.1 | USN-6260-1 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | 5.19.0-1029.30~22.04.1 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1042.49 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1042.49 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1042.49.1 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1042.49.1 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1038.46 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1038.46 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | 5.19.0-1030.32~22.04.1 | USN-6260-1 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | 5.19.0-1030.32~22.04.1 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1038.43 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1038.43 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1024.29 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1024.29 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | 5.19.0-50.50 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | 5.19.0-50.50 | USN-6260-1 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | 6.2.0-26.26~22.04.1 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1034.37 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1034.37 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1036.41 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1036.41 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1038.43 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1038.43 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-78.85 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-78.85 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1029.29 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1029.29 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1016.16 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1002.2 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | 5.17.0-1035.36 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | 5.17.0-1035.36 | USN-6247-1 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | 6.0.0-1020.20 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | 6.0.0-1020.20 | USN-6248-1 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | 6.1.0-1019.19 | USN-6285-1 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | 6.1.0-1019.19 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1039.45 | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1039.45 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1034.37 | USN-6246-1 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1034.37 | UBUNTU-CVE-2023-31248 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2023-31248 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1025.29 | UBUNTU-CVE-2023-31248 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | v5.9-rc1 |
Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://lore.kernel.org/netfilter-devel/20230705121627.GC19489@breakpoint.cc/T/ issue-tracking
- https://www.openwall.com/lists/oss-security/2023/07/05/2 mailing-list
- http://www.openwall.com/lists/oss-security/2023/07/05/2
- https://www.debian.org/security/2023/dsa-5453
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPHI46ROSSLVAV4R5LJWJYU747JGOS6D/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGZC5XOANA75OJ4XARBBXYSLDKUIJI5E/
- http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html
- https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html
- http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html
- https://security.netapp.com/advisory/ntap-20240201-0001/