CVE-2023-30456: linux linux_kernel

Modified

AliasesUBUNTU-CVE-2023-30456DEBIAN-CVE-2023-30456

Published 10-04-2023Last modified 19-03-2025

Vulnerability summary

CVE-2023-30456 is a medium (CVSS 6.5) vulnerability in linux linux_kernel. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 40.6% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 6.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

6.5/10

010

Medium · v3.1 (CVE.org)

EPSS score

0.47%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Timeline

10-04-2023
PublishedVulnerability first disclosed.
19-03-2025
Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

v3.16.5

EPSS trend

Probability

0.47%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.47% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-754Improper Check for Unusual or Exceptional ConditionsThe product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu91 products

linux< 3.13.0-197.248 | < 4.4.0-241.275 | < 4.15.0-212.223 | < 5.4.0-150.167 | < 5.15.0-73.80
linux-aws< 4.4.0-1119.125 | < 4.4.0-1157.172 | < 4.15.0-1157.170 | < 5.4.0-1103.111 | < 5.15.0-1037.41
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11All versions (No fix recorded)
linux-aws-5.13All versions (No fix recorded)

linux-aws-5.15< 5.15.0-1037.41~20.04.1
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1103.111~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-fips< 4.15.0-2096.102 | All versions (No fix recorded) | < 5.4.0-1103.111+fips1
linux-aws-hwe< 4.15.0-1157.170~16.04.1
linux-azure< 4.15.0-1166.181~14.04.1 | < 4.15.0-1166.181~16.04.1 | All versions (No fix recorded) | < 5.4.0-1109.115 | < 5.15.0-1039.46
linux-azure-4.15< 4.15.0-1166.181
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1039.46~20.04.1
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1109.115~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded) | < 5.15.0-1039.46.1
linux-azure-fips< 4.15.0-2075.81 | All versions (No fix recorded) | < 5.4.0-1109.115+fips1
linux-bluefield< 5.4.0-1064.70 | < 5.15.0-1017.19
linux-fips< 4.4.0-1089.96 | All versions (No fix recorded) | < 4.15.0-1112.123 | < 5.4.0-1078.87
linux-gcp< 4.15.0-1151.167~16.04.1 | All versions (No fix recorded) | < 5.4.0-1106.115 | < 5.15.0-1035.43
linux-gcp-4.15< 4.15.0-1151.167
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1035.43~20.04.1
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1106.115~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-fips< 4.15.0-2059.64 | All versions (No fix recorded) | < 5.4.0-1106.115+fips1
linux-gke< 5.4.0-1100.107 | < 5.15.0-1034.39
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15< 5.15.0-1034.39~20.04.1
linux-gke-5.4All versions (No fix recorded)
linux-gkeop< 5.4.0-1070.74 | < 5.15.0-1021.26
linux-gkeop-5.15< 5.15.0-1021.26~20.04.1
linux-gkeop-5.4All versions (No fix recorded)
linux-hwe< 4.15.0-212.223~16.04.1 | All versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.15< 5.15.0-73.80~20.04.1
linux-hwe-5.19< 5.19.0-43.44~22.04.1
linux-hwe-5.4< 5.4.0-150.167~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1050.55 | < 5.15.0-1031.34
linux-ibm-5.4< 5.4.0-1050.55~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtime< 5.15.0-1028.33
linux-intel-iotg< 5.15.0-1031.36
linux-intel-iotg-5.15< 5.15.0-1031.36~20.04.1
linux-iot< 5.4.0-1017.18
linux-kvm< 4.4.0-1120.130 | < 4.15.0-1141.146 | < 5.4.0-1092.98 | < 5.15.0-1034.39
linux-lowlatency< 5.15.0-73.80
linux-lowlatency-hwe-5.15< 5.15.0-73.80~20.04.1
linux-lowlatency-hwe-5.19< 5.19.0-1025.26~22.04.1
linux-lts-xenial< 4.4.0-241.275~14.04.1
linux-nvidia< 5.15.0-1026.26
linux-nvidia-tegra< 5.15.0-1014.14
linux-nvidia-tegra-5.15< 5.15.0-1014.14~20.04.1
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14All versions (No fix recorded)
linux-oem-5.17< 5.17.0-1032.33
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0< 6.0.0-1017.17
linux-oem-6.1< 6.1.0-1009.9
linux-oracle< 4.15.0-1120.131~16.04.1 | < 4.15.0-1120.131 | < 5.4.0-1102.111 | < 5.15.0-1036.42
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11All versions (No fix recorded)
linux-oracle-5.13All versions (No fix recorded)
linux-oracle-5.15< 5.15.0-1036.42~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1102.111~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-raspi< 5.4.0-1086.97 | < 5.15.0-1030.32
linux-raspi-5.4< 5.4.0-1086.97~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1039.42
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1034.38~20.04.1
linux-riscv-5.8All versions (No fix recorded)
linux-snapdragon< 4.15.0-1151.161
linux-xilinx-zynqmp< 5.4.0-1024.28

Show all 91

Debian1 product

linux< 6.1.25-1

Linux1 product

linux_kernel< 6.2.8 | 6.3:rc1 | 6.3:rc2

3 vendors · 93 products

References

27 links

Show all 27 references

ubuntu.com/security/notices/USN-6124-1Advisory
ubuntu.com/security/notices/USN-6127-1Advisory
ubuntu.com/security/notices/USN-6130-1Advisory
ubuntu.com/security/notices/USN-6131-1Advisory
ubuntu.com/security/notices/USN-6132-1Advisory
ubuntu.com/security/notices/USN-6135-1Advisory
ubuntu.com/security/notices/USN-6149-1Advisory
ubuntu.com/security/notices/USN-6150-1Advisory
ubuntu.com/security/notices/USN-6162-1Advisory
ubuntu.com/security/notices/USN-6175-1Advisory
ubuntu.com/security/notices/USN-6186-1Advisory
ubuntu.com/security/notices/USN-6222-1Advisory
ubuntu.com/security/notices/USN-6256-1Advisory
ubuntu.com/security/notices/USN-6699-1Advisory
www.cve.org/CVERecord?id=CVE-2023-30456REPORT
security-tracker.debian.org/tracker/CVE-2023-30456Advisory
nvd.nist.gov/vuln/detail/CVE-2023-30456OvalAdvisory