synced 3 MIN AGO
01 Record

CVE-2023-0597

A flaw possibility of memory leak in the Linux kernel cpu_entry_area mapping of X86 CPU data to memory was found in the way user can guess location of exception stack(s) or other important data. A

MediumPUBLISHEDCNA: redhat
CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
View raw JSON

02 Description

A flaw possibility of memory leak in the Linux kernel cpu_entry_area mapping of X86 CPU data to memory was found in the way user can guess location of exception stack(s) or other important data. A

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.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.29% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 22.2% of scored records. A rank, not a probability.
NVD base score
5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/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
Moderate. 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
2023-02-23 00:00Z3 YR AGO
Last updated
2025-03-12 19:17Z1 YR AGO
Reserved
2023-01-31
Assigning CNA
redhat
Record state
PUBLISHED
Severity
Medium (CVSS 5.5)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weaknesses
  • CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
  • CWE-401Missing Release of Memory after Effective LifetimeVariant
Data version
5.1
Document digest
5c0ee08f339fce12a5982b9403a6ada11c07642a7520a59e174e9ab154132563

05 Affected products

VendorProductVersionsPlatforms
n/aKernelLinux kernel 6.2-rc1—

06 References

07 Fixed in

AlmaLinux 8

  • bpftool
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-abi-stablelists
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-core
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-cross-headers
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-debug
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-debug-core
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-debug-devel
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-debug-modules
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-debug-modules-extra
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-devel
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-doc
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-headers
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-modules
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-modules-extra
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-tools
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-tools-libs
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-tools-libs-devel
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-zfcpdump
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-zfcpdump-core
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-zfcpdump-devel
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-zfcpdump-modules
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-zfcpdump-modules-extra
    Fixed in 4.18.0-513.5.1.el8_9
  • perf
    Fixed in 4.18.0-513.5.1.el8_9
  • python3-perf
    Fixed in 4.18.0-513.5.1.el8_9

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • bpftool
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-abi-stablelists
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-core
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-cross-headers
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-debug
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-debug-core
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-debug-devel
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-debug-modules
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-debug-modules-extra
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-devel
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-doc
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-headers
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-modules
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-modules-extra
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-tools
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-tools-libs
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-tools-libs-devel
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-zfcpdump
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-zfcpdump-core
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-zfcpdump-devel
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-zfcpdump-modules
    Fixed in 4.18.0-513.5.1.el8_9
  • kernel-zfcpdump-modules-extra
    Fixed in 4.18.0-513.5.1.el8_9
  • perf
    Fixed in 4.18.0-513.5.1.el8_9
  • python3-perf
    Fixed in 4.18.0-513.5.1.el8_9

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • linux
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • linux
    Fixed in 6.3.7-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • linux
    Fixed in 6.3.7-1

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-aws-5.0
    No fix yet
  • linux-aws-5.3
    No fix yet
  • linux-azure
    No fix yet
  • linux-azure-5.3
    No fix yet
  • linux-azure-edge
    No fix yet
  • linux-gcp
    No fix yet
  • linux-gcp-5.3
    No fix yet
  • 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-edge
    No fix yet
  • linux-oem
    No fix yet
  • linux-oracle-5.0
    No fix yet
  • linux-oracle-5.3
    No fix yet

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 5.4.0-166.183
  • linux-aws
    Fixed in 5.4.0-1113.123
  • linux-aws-5.11
    No fix yet
  • linux-aws-5.13
    No fix yet
  • linux-aws-5.15
    Fixed in 5.15.0-1041.46~20.04.1
  • linux-aws-5.8
    No fix yet
  • linux-azure
    Fixed in 5.4.0-1119.126
  • linux-azure-5.11
    No fix yet
  • linux-azure-5.13
    No fix yet
  • linux-azure-5.15
    Fixed in 5.15.0-1045.52~20.04.1
  • linux-azure-5.8
    No fix yet
  • linux-azure-fde
    No fix yet
  • linux-bluefield
    Fixed in 5.4.0-1074.80
  • linux-gcp
    Fixed in 5.4.0-1117.126
  • linux-gcp-5.11
    No fix yet
  • linux-gcp-5.13
    No fix yet
  • linux-gcp-5.15
    Fixed in 5.15.0-1039.47~20.04.1
  • linux-gcp-5.8
    No fix yet
  • linux-gke
    No fix yet
  • linux-gke-5.15
    Fixed in 5.15.0-1039.44~20.04.1
  • linux-gkeop
    Fixed in 5.4.0-1080.84
  • linux-gkeop-5.15
    Fixed in 5.15.0-1025.30~20.04.1
  • linux-hwe-5.11
    No fix yet
  • linux-hwe-5.13
    No fix yet
  • linux-hwe-5.15
    Fixed in 5.15.0-79.86~20.04.2
  • linux-hwe-5.8
    No fix yet
  • linux-ibm
    Fixed in 5.4.0-1060.65
  • linux-ibm-5.15
    Fixed in 5.15.0-1036.39~20.04.1
  • linux-intel-5.13
    No fix yet
  • linux-intel-iotg-5.15
    Fixed in 5.15.0-1037.42~20.04.1
  • linux-iot
    Fixed in 5.4.0-1025.26
  • linux-kvm
    Fixed in 5.4.0-1102.108
  • linux-lowlatency-hwe-5.15
    Fixed in 5.15.0-79.88~20.04.1
  • linux-nvidia-tegra-5.15
    Fixed in 5.15.0-1016.16~20.04.1
  • linux-oem-5.10
    No fix yet
  • linux-oem-5.13
    No fix yet
  • linux-oem-5.14
    No fix yet
  • linux-oem-5.6
    No fix yet
  • linux-oracle
    Fixed in 5.4.0-1112.121
  • linux-oracle-5.11
    No fix yet

10 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 5.15.0-79.86
  • linux-allwinner-5.19
    No fix yet
  • linux-aws
    Fixed in 5.15.0-1042.47
  • linux-aws-5.19
    No fix yet
  • linux-azure
    Fixed in 5.15.0-1045.52
  • linux-azure-5.19
    No fix yet
  • linux-azure-fde
    Fixed in 5.15.0-1044.51.1
  • linux-azure-fde-5.19
    No fix yet
  • linux-gcp
    Fixed in 5.15.0-1039.47
  • linux-gcp-5.19
    No fix yet
  • linux-gke
    Fixed in 5.15.0-1039.44
  • linux-gkeop
    Fixed in 5.15.0-1025.30
  • linux-hwe-5.19
    No fix yet
  • linux-ibm
    Fixed in 5.15.0-1035.38
  • linux-intel-iotg
    Fixed in 5.15.0-1037.42
  • linux-kvm
    Fixed in 5.15.0-1039.44
  • linux-lowlatency
    Fixed in 5.15.0-79.88
  • linux-lowlatency-hwe-5.19
    No fix yet
  • linux-nvidia
    Fixed in 5.15.0-1030.30
  • linux-nvidia-tegra
    Fixed in 5.15.0-1016.16
  • linux-nvidia-tegra-igx
    Fixed in 5.15.0-1002.2
  • linux-oem-5.17
    Fixed in 5.17.0-1034.35
  • linux-oem-6.0
    Fixed in 6.0.0-1019.19
  • linux-oem-6.1
    No fix yet
  • linux-oracle
    Fixed in 5.15.0-1040.46
  • linux-raspi
    Fixed in 5.15.0-1035.38
  • linux-realtime
    No fix yet
  • linux-riscv
    No fix yet
  • linux-riscv-5.19
    No fix yet
  • linux-starfive-5.19
    No fix yet
  • linux-xilinx-zynqmp
    Fixed in 5.15.0-1025.29

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 5.15.0-1022.24

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-azure
    Fixed in 4.15.0-1171.186~14.04.1
    Available 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-aws-hwe
    Fixed in 4.15.0-1162.175~16.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-azure
    Fixed in 4.15.0-1171.186~16.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-gcp
    Fixed in 4.15.0-1156.173~16.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-hwe
    Fixed in 4.15.0-219.230~16.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-oracle
    Fixed in 4.15.0-1125.136~16.04.1
    Available 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 18.04 LTS

  • linux
    Fixed in 4.15.0-219.230
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-aws
    Fixed in 4.15.0-1162.175
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-aws-5.4
    Fixed in 5.4.0-1113.123~18.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-azure-4.15
    Fixed in 4.15.0-1171.186
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-azure-5.4
    Fixed in 5.4.0-1119.126~18.04.2
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-gcp-4.15
    Fixed in 4.15.0-1156.173
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-gcp-5.4
    Fixed in 5.4.0-1117.126~18.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-hwe-5.4
    Fixed in 5.4.0-166.183~18.04.2
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-ibm-5.4
    Fixed in 5.4.0-1060.65~18.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-kvm
    Fixed in 4.15.0-1146.151
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-oracle
    Fixed in 4.15.0-1125.136
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-oracle-5.4
    Fixed in 5.4.0-1112.121~18.04.4
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-raspi-5.4
    Fixed in 5.4.0-1097.109~18.04.2
    Available 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-preview 22.04 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-updates 18.04 LTS

  • linux-aws-fips
    Fixed in 4.15.0-2101.107
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-azure-fips
    Fixed in 4.15.0-2080.86
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-fips
    Fixed in 4.15.0-1117.128
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-gcp-fips
    Fixed in 4.15.0-2064.69
    Available 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 5.4.0-1113.123+fips1
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-azure-fips
    Fixed in 5.4.0-1119.126+fips1
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-fips
    Fixed in 5.4.0-1088.97
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-gcp-fips
    Fixed in 5.4.0-1117.126+fips1
    Available 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 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 5.15.0-1036.38
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-realtime
    Fixed in 5.15.0-1043.48
    Available 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.