CVE-2023-0045
Incorrect indirect branch prediction barrier in the Linux Kernel
02 Description
Incorrect indirect branch prediction barrier in the Linux Kernel
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 2.39% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 83.5% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. 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
- 2023-04-25 22:44Z3 YR AGO
- Last updated
- 2025-02-13 16:38Z1 YR AGO
- Reserved
- 2023-01-04
- Assigning CNA
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 4.7)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-610Externally Controlled Reference to a Resource in Another SphereClass
- Data version
- 5.1
- Document digest
- 9d6404b9898805f43fdb3f5298fce6fb6051c86bc2f6f6651ca4fe8b20079f78
05 Affected products
06 References
- git.kernel.orghttps://git.kernel.org/tip/a664ec9158eeddd75121d39c9a0758016097fa96
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20230714-0001/
- github.comhttps://github.com/google/security-research/security/advisories/GHSA-9x5g-vmxf-4qj8
07 Fixed in
Debian 12
- linux Fixed in 6.1.7-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.1.7-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 6.1.7-1
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 Fixed in 4.15.0-208.220
- linux-aws Fixed in 4.15.0-1153.166
- linux-aws-5.0 No fix yet
- linux-aws-5.3 No fix yet
- linux-aws-5.4 Fixed in 5.4.0-1097.105~18.04.1
- linux-azure No fix yet
- linux-azure-4.15 Fixed in 4.15.0-1162.177
- linux-azure-5.3 No fix yet
- linux-azure-5.4 Fixed in 5.4.0-1104.110~18.04.1
- linux-azure-edge No fix yet
- linux-dell300x Fixed in 4.15.0-1062.67
- linux-gcp No fix yet
- linux-gcp-4.15 Fixed in 4.15.0-1147.163
- linux-gcp-5.3 No fix yet
- linux-gcp-5.4 Fixed in 5.4.0-1101.110~18.04.1
- 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-hwe-5.4 Fixed in 5.4.0-144.161~18.04.1
- linux-hwe-edge No fix yet
- linux-ibm-5.4 Fixed in 5.4.0-1045.50~18.04.1
- linux-kvm Fixed in 4.15.0-1137.142
- linux-oem No fix yet
- linux-oracle Fixed in 4.15.0-1116.127
- linux-oracle-5.0 No fix yet
- linux-oracle-5.3 No fix yet
- linux-oracle-5.4 Fixed in 5.4.0-1094.103~18.04.1
- linux-raspi-5.4 Fixed in 5.4.0-1081.92~18.04.1
- linux-raspi2 Fixed in 4.15.0-1129.137
- linux-snapdragon Fixed in 4.15.0-1148.158
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux Fixed in 5.4.0-144.161
- linux-aws Fixed in 5.4.0-1097.105
- linux-aws-5.11 No fix yet
- linux-aws-5.13 No fix yet
- linux-aws-5.15 Fixed in 5.15.0-1033.37~20.04.1
- linux-aws-5.8 No fix yet
- linux-azure Fixed in 5.4.0-1104.110
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.15 Fixed in 5.15.0-1035.42~20.04.1
- linux-azure-5.8 No fix yet
- linux-bluefield Fixed in 5.4.0-1059.65
- linux-gcp Fixed in 5.4.0-1101.110
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.15 Fixed in 5.15.0-1031.38~20.04.1
- linux-gcp-5.8 No fix yet
- linux-gke Fixed in 5.4.0-1095.102
- linux-gke-5.15 Fixed in 5.15.0-1029.34~20.04.1
- linux-gkeop Fixed in 5.4.0-1065.69
- linux-gkeop-5.15 Fixed in 5.15.0-1017.22~20.04.1
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.15 Fixed in 5.15.0-69.76~20.04.1
- linux-hwe-5.8 No fix yet
- linux-ibm Fixed in 5.4.0-1045.50
- linux-intel-5.13 No fix yet
- linux-intel-iotg-5.15 Fixed in 5.15.0-1027.32~20.04.1
- linux-iot Fixed in 5.4.0-1013.15
- linux-kvm Fixed in 5.4.0-1087.93
- linux-lowlatency-hwe-5.15 Fixed in 5.15.0-69.76~20.04.1
- linux-nvidia-tegra-5.15 Fixed in 5.15.0-1014.14~20.04.1
- linux-oem-5.10 No fix yet
- linux-oem-5.13 No fix yet
- linux-oem-5.14 Fixed in 5.14.0-1058.66
- linux-oem-5.6 No fix yet
- linux-oracle Fixed in 5.4.0-1094.103
- linux-oracle-5.11 No fix yet
- linux-oracle-5.13 No fix yet
- linux-oracle-5.15 Fixed in 5.15.0-1032.38~20.04.1
8 further packages in Ubuntu 20.04 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 22.04 LTS
- linux Fixed in 5.15.0-69.76
- linux-aws Fixed in 5.15.0-1033.37
- linux-azure Fixed in 5.15.0-1035.42
- linux-azure-5.19 Fixed in 5.19.0-1022.23~22.04.1
- linux-azure-fde Fixed in 5.15.0-1035.42.1
- linux-gcp Fixed in 5.15.0-1031.38
- linux-gke Fixed in 5.15.0-1030.35
- linux-gkeop Fixed in 5.15.0-1017.22
- linux-hwe-5.19 Fixed in 5.19.0-38.39~22.04.1
- linux-ibm Fixed in 5.15.0-1027.30
- linux-intel-iotg Fixed in 5.15.0-1027.32
- linux-kvm Fixed in 5.15.0-1030.35
- linux-lowlatency Fixed in 5.15.0-69.76
- linux-lowlatency-hwe-5.19 Fixed in 5.19.0-1021.22~22.04.1
- linux-nvidia Fixed in 5.15.0-1023.23
- linux-oem-5.17 Fixed in 5.17.0-1028.29
- linux-oem-6.0 Fixed in 6.0.0-1012.12
- linux-oem-6.1 Fixed in 6.1.0-1007.7
- linux-oracle Fixed in 5.15.0-1032.38
- linux-raspi Fixed in 5.15.0-1026.28
- linux-realtime No fix yet
- linux-riscv No fix yet
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 5.15.0-1015.17
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- linux-aws Fixed in 4.4.0-1116.122Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure Fixed in 4.15.0-1162.177~14.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-lts-xenial Fixed in 4.4.0-237.271~14.04.1Available with Ubuntu Pro (Infra-only): 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 16.04 LTS
- linux Fixed in 4.4.0-237.271Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws Fixed in 4.4.0-1154.169Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws-hwe Fixed in 4.15.0-1153.166~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure Fixed in 4.15.0-1162.177~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp Fixed in 4.15.0-1147.163~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-hwe Fixed in 4.15.0-208.219~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-kvm Fixed in 4.4.0-1117.127Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle Fixed in 4.15.0-1116.127~16.04.1Available with Ubuntu Pro (Infra-only): 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 FIPS-updates 16.04 LTS
- linux-fips Fixed in 4.4.0-1086.93Available 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 FIPS-updates 18.04 LTS
- linux-aws-fips Fixed in 4.15.0-2092.98Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 4.15.0-2071.77Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 4.15.0-1108.119Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 4.15.0-2055.60Available 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 FIPS-updates 20.04 LTS
- linux-aws-fips Fixed in 5.4.0-1099.107+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 5.4.0-1104.110+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 5.4.0-1073.82Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 5.4.0-1101.110+fips1Available 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 FIPS 16.04 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 FIPS 18.04 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 20.04 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 Realtime 22.04 LTS
- linux-intel-iot-realtime Fixed in 5.15.0-1023.28Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 5.15.0-1034.37Available 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.