Vulnerability · Published Apr 10, 2023 · Assigned by mitre
CVE-2023-30456
Medium 6.5
In plain English
A medium-severity security flaw in the bpftool package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 59.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An issue was discovered in arch/x86/kvm/vmx/nested.c in the Linux kernel before 6.2.8. nVMX on x86_64 lacks consistency checks for CR0 and CR4.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-core | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-debug | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-devel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-doc | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-headers | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-modules | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-tools | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | perf | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | python3-perf | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| Debian:12 | linux | 6.1.25-1 | DEBIAN-CVE-2023-30456 |
| Debian:13 | linux | 6.1.25-1 | DEBIAN-CVE-2023-30456 |
| Debian:14 | linux | 6.1.25-1 | DEBIAN-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux | 5.15.0-73.80 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux | 5.15.0-73.80 | USN-6127-1 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1037.41 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1037.41 | USN-6127-1 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1039.46 | USN-6127-1 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1039.46 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1039.46.1 | USN-6135-1 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1039.46.1 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1035.43 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1035.43 | USN-6127-1 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1034.39 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1034.39 | USN-6127-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1021.26 | USN-6127-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1021.26 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | 5.19.0-43.44~22.04.1 | USN-6127-1 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | 5.19.0-43.44~22.04.1 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1031.34 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1031.34 | USN-6127-1 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1031.36 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1031.36 | USN-6150-1 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1034.39 | USN-6127-1 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1034.39 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-73.80 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-73.80 | USN-6127-1 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | 5.19.0-1025.26~22.04.1 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1026.26 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1014.14 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | 5.17.0-1032.33 | USN-6124-1 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | 5.17.0-1032.33 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | 6.0.0-1017.17 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | 6.0.0-1017.17 | USN-6123-1 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | 6.1.0-1009.9 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | 6.1.0-1009.9 | USN-6033-1 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1036.42 | USN-6127-1 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1036.42 | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1030.32 | USN-6150-1 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1030.32 | UBUNTU-CVE-2023-30456 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-30456 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-30456 |
Affected products (as reported)
Weakness: CWE-754 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
References
- https://github.com/torvalds/linux/commit/112e66017bff7f2837030f34c2bc19501e9212d5
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.8
- [debian-lts-announce] 20230502 [SECURITY] [DLA 3404-1] linux-5.10 security update mailing-list
- [debian-lts-announce] 20230503 [SECURITY] [DLA 3403-1] linux security update mailing-list
- https://security.netapp.com/advisory/ntap-20230511-0007/
- http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html