🛡️ CVE-2023-20569 on Ubuntu — amd64-microcode
Description
A side channel vulnerability on some of the AMD CPUs may allow an attacker to influence the return address prediction. This may result in speculative execution at an attacker-controlled address, potentially leading to information disclosure.
Distribution advisory
This page covers CVE-2023-20569 as tracked by Ubuntu, for the package amd64-microcode. The fix is available in version 3.20230808.1.1ubuntu1; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.
Weakness class
UBUNTU-CVE-2023-20569 is classified as CWE-203: Observable Discrepancy. The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.
Affected software
UBUNTU-CVE-2023-20569 is recorded against 106 packages.
- amd64-microcode (fixed in 3.20230808.1.1ubuntu1)
- linux (fixed in 5.15.0-112.122)
- linux-allwinner-5.19
- linux-aws (fixed in 5.15.0-1063.69)
- linux-aws-5.0
- linux-aws-5.11
- linux-aws-5.13
- linux-aws-5.15 (fixed in 5.15.0-1063.69~20.04.1)
- linux-aws-5.19
- linux-aws-5.3
- linux-aws-5.4
- linux-aws-5.8
- linux-aws-6.2 (fixed in 6.2.0-1013.13~22.04.1)
- linux-aws-fips (fixed in 5.15.0-1063.69+fips1)
- linux-aws-hwe
- linux-azure (fixed in 5.15.0-1066.75)
- linux-azure-4.15
- linux-azure-5.11
- linux-azure-5.13
- linux-azure-5.15 (fixed in 5.15.0-1065.74~20.04.1)
- linux-azure-5.19
- linux-azure-5.3
- linux-azure-5.4
- linux-azure-5.8
Show the remaining 82 packages
- linux-azure-6.2 (fixed in 6.2.0-1014.14~22.04.1)
- linux-azure-edge
- linux-azure-fde (fixed in 5.15.0-1067.76.1)
- linux-azure-fde-5.15 (fixed in 5.15.0-1114.123~20.04.1)
- linux-azure-fde-5.19
- linux-azure-fips (fixed in 5.15.0-1065.74+fips1)
- linux-bluefield
- linux-fips (fixed in 5.15.0-111.121+fips1)
- linux-gcp (fixed in 5.15.0-1062.70)
- linux-gcp-4.15
- linux-gcp-5.11
- linux-gcp-5.13
- linux-gcp-5.15 (fixed in 5.15.0-1062.70~20.04.1)
- linux-gcp-5.19
- linux-gcp-5.3
- linux-gcp-5.4
- linux-gcp-5.8
- linux-gcp-6.2 (fixed in 6.2.0-1016.18~22.04.1)
- linux-gcp-fips (fixed in 5.15.0-1062.70+fips1)
- linux-gke (fixed in 5.15.0-1060.66)
- linux-gke-4.15
- linux-gke-5.15
- linux-gke-5.4
- linux-gkeop (fixed in 5.15.0-1046.53)
- linux-gkeop-5.15 (fixed in 5.15.0-1046.53~20.04.1)
- linux-gkeop-5.4
- linux-hwe
- linux-hwe-5.11
- linux-hwe-5.13
- linux-hwe-5.15 (fixed in 5.15.0-113.123~20.04.1)
- linux-hwe-5.19
- linux-hwe-5.4
- linux-hwe-5.8
- linux-hwe-6.2 (fixed in 6.2.0-34.34~22.04.1)
- linux-hwe-edge
- linux-ibm (fixed in 5.15.0-1056.59)
- linux-ibm-5.15 (fixed in 5.15.0-1057.60~20.04.1)
- linux-ibm-5.4
- linux-intel-5.13
- linux-intel-iot-realtime (fixed in 5.15.0-1056.58)
- linux-intel-iotg (fixed in 5.15.0-1058.64)
- linux-intel-iotg-5.15 (fixed in 5.15.0-1058.64~20.04.1)
- linux-iot
- linux-kvm (fixed in 5.15.0-1060.65)
- linux-lowlatency (fixed in 5.15.0-110.120)
- linux-lowlatency-hwe-5.15 (fixed in 5.15.0-110.120~20.04.1)
- linux-lowlatency-hwe-5.19
- linux-lowlatency-hwe-6.2 (fixed in 6.2.0-1014.14~22.04.1)
- linux-lts-xenial
- linux-nvidia (fixed in 5.15.0-1058.59)
- linux-nvidia-6.2 (fixed in 6.2.0-1011.11)
- linux-nvidia-tegra (fixed in 5.15.0-1026.26)
- linux-nvidia-tegra-5.15 (fixed in 5.15.0-1027.27~20.04.1)
- linux-nvidia-tegra-igx (fixed in 5.15.0-1015.15)
- linux-oem
- linux-oem-5.10
- linux-oem-5.13
- linux-oem-5.14
- linux-oem-5.17
- linux-oem-5.6
- linux-oem-6.0
- linux-oem-6.1 (fixed in 6.1.0-1023.23)
- linux-oracle (fixed in 5.15.0-1061.67)
- linux-oracle-5.0
- linux-oracle-5.11
- linux-oracle-5.13
- linux-oracle-5.15 (fixed in 5.15.0-1061.67~20.04.1)
- linux-oracle-5.3
- linux-oracle-5.4
- linux-oracle-5.8
- linux-raspi (fixed in 5.15.0-1058.61)
- linux-raspi-5.4
- linux-raspi-realtime
- linux-raspi2
- linux-realtime (fixed in 5.15.0-1064.72)
- linux-riscv
- linux-riscv-5.11
- linux-riscv-5.15 (fixed in 5.15.0-1059.63~20.04.1)
- linux-riscv-5.19
- linux-riscv-5.8
- linux-starfive-5.19
- linux-xilinx-zynqmp (fixed in 5.15.0-1030.34)
Timeline and source
Published on 8 August 2023 and last revised on 19 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
www.amd.com (Report)
lore.kernel.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
www.cve.org (Report)
CVE-2023-20569 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| amd64-microcode | — | 3.20230808.1.1ubuntu1 |
| linux | — | 5.15.0-112.122 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 5.15.0-1063.69 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1063.69~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | — |
| linux-aws-5.8 | — | — |
| linux-aws-6.2 | — | 6.2.0-1013.13~22.04.1 |
| linux-aws-fips | — | 5.15.0-1063.69+fips1 |
| linux-aws-hwe | — | — |
| linux-azure | — | 5.15.0-1066.75 |
| linux-azure-4.15 | — | — |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1065.74~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | — |
| linux-azure-5.8 | — | — |
| linux-azure-6.2 | — | 6.2.0-1014.14~22.04.1 |
| linux-azure-edge | — | — |
| linux-azure-fde | — | 5.15.0-1067.76.1 |
| linux-azure-fde-5.15 | — | 5.15.0-1114.123~20.04.1 |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fips | — | 5.15.0-1065.74+fips1 |
| linux-bluefield | — | — |
| linux-fips | — | 5.15.0-111.121+fips1 |
| linux-gcp | — | 5.15.0-1062.70 |
| linux-gcp-4.15 | — | — |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1062.70~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | — |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.2 | — | 6.2.0-1016.18~22.04.1 |
| linux-gcp-fips | — | 5.15.0-1062.70+fips1 |
| linux-gke | — | 5.15.0-1060.66 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 5.15.0-1046.53 |
| linux-gkeop-5.15 | — | 5.15.0-1046.53~20.04.1 |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-113.123~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.4 | — | — |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.2 | — | 6.2.0-34.34~22.04.1 |
| linux-hwe-edge | — | — |
| linux-ibm | — | 5.15.0-1056.59 |
| linux-ibm-5.15 | — | 5.15.0-1057.60~20.04.1 |
| linux-ibm-5.4 | — | — |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1056.58 |
| linux-intel-iotg | — | 5.15.0-1058.64 |
| linux-intel-iotg-5.15 | — | 5.15.0-1058.64~20.04.1 |
| linux-iot | — | — |
| linux-kvm | — | 5.15.0-1060.65 |
| linux-lowlatency | — | 5.15.0-110.120 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-110.120~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.2 | — | 6.2.0-1014.14~22.04.1 |
| linux-lts-xenial | — | — |
| linux-nvidia | — | 5.15.0-1058.59 |
| linux-nvidia-6.2 | — | 6.2.0-1011.11 |
| linux-nvidia-tegra | — | 5.15.0-1026.26 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1027.27~20.04.1 |
| linux-nvidia-tegra-igx | — | 5.15.0-1015.15 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | — |
| linux-oem-5.17 | — | — |
| linux-oem-5.6 | — | — |
| linux-oem-6.0 | — | — |
| linux-oem-6.1 | — | 6.1.0-1023.23 |
| linux-oracle | — | 5.15.0-1061.67 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1061.67~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | — |
| linux-oracle-5.8 | — | — |
| linux-raspi | — | 5.15.0-1058.61 |
| linux-raspi-5.4 | — | — |
| linux-raspi-realtime | — | — |
| linux-raspi2 | — | — |
| linux-realtime | — | 5.15.0-1064.72 |
| linux-riscv | — | — |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1059.63~20.04.1 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-starfive-5.19 | — | — |
| linux-xilinx-zynqmp | — | 5.15.0-1030.34 |
References
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