CVE-2023-2513
A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the extra inode size for extended attributes. This flaw could allow a privileged local user to
02 Description
A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the extra inode size for extended attributes. This flaw could allow a privileged local user to
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.23% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 14.7% of scored records. A rank, not a probability.
- NVD base score
- 6.7 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- 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
- 2023-05-08 00:00Z3 YR AGO
- Last updated
- 2025-04-23 16:21Z1 YR AGO
- Reserved
- 2023-05-04
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.7)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416Use After FreeVariant
- Data version
- 5.1
- Document digest
- a6097a439558b10363eb616eae8e6f043271d4de02b9be8cde629e87772e88cc
05 Affected products
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 Fixed in 5.19.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 5.19.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 5.19.6-1
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 4.15.0-197.208
- linux-aws Fixed in 4.15.0-1143.155
- linux-aws-5.0 No fix yet
- linux-aws-5.3 No fix yet
- linux-aws-5.4 Fixed in 5.4.0-1089.97~18.04.1
- linux-azure No fix yet
- linux-azure-4.15 Fixed in 4.15.0-1157.172
- linux-azure-5.3 No fix yet
- linux-azure-5.4 Fixed in 5.4.0-1095.101~18.04.1
- linux-azure-edge No fix yet
- linux-dell300x Fixed in 4.15.0-1055.60
- linux-gcp No fix yet
- linux-gcp-4.15 Fixed in 4.15.0-1138.154
- linux-gcp-5.3 No fix yet
- linux-gcp-5.4 Fixed in 5.4.0-1093.102~18.04.1
- 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 5.4.0-132.148~18.04.1
- linux-hwe-edge No fix yet
- linux-ibm-5.4 Fixed in 5.4.0-1037.42~18.04.1
- linux-kvm Fixed in 4.15.0-1129.134
- linux-oem No fix yet
- linux-oracle Fixed in 4.15.0-1108.119
- linux-oracle-5.0 No fix yet
- linux-oracle-5.3 No fix yet
- linux-oracle-5.4 Fixed in 5.4.0-1087.96~18.04.1
- linux-raspi-5.4 Fixed in 5.4.0-1074.85~18.04.1
- linux-raspi2 Fixed in 4.15.0-1121.129
- linux-snapdragon Fixed in 4.15.0-1139.149
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 5.4.0-132.148
- linux-aws Fixed in 5.4.0-1089.97
- linux-aws-5.11 No fix yet
- linux-aws-5.13 No fix yet
- linux-aws-5.15 Fixed in 5.15.0-1023.27~20.04.1
- linux-aws-5.8 No fix yet
- linux-azure Fixed in 5.4.0-1095.101
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.15 Fixed in 5.15.0-1023.29~20.04.1
- linux-azure-5.8 No fix yet
- linux-bluefield Fixed in 5.4.0-1050.56
- linux-gcp Fixed in 5.4.0-1093.102
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.15 Fixed in 5.15.0-1022.29~20.04.1
- linux-gcp-5.8 No fix yet
- linux-gke Fixed in 5.4.0-1087.94
- linux-gke-5.15 Fixed in 5.15.0-1020.25~20.04.1
- linux-gkeop Fixed in 5.4.0-1057.61
- linux-gkeop-5.15 Fixed in 5.15.0-1008.12~20.04.1
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.15 Fixed in 5.15.0-53.59~20.04.1
- linux-hwe-5.8 No fix yet
- linux-ibm Fixed in 5.4.0-1037.42
- linux-intel-5.13 No fix yet
- linux-intel-iotg-5.15 Fixed in 5.15.0-1018.23~20.04.1
- linux-iot Fixed in 5.4.0-1006.8
- linux-kvm Fixed in 5.4.0-1079.85
- linux-lowlatency-hwe-5.15 Fixed in 5.15.0-53.59~20.04.1
- 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 5.4.0-1087.96
- linux-oracle-5.11 No fix yet
- linux-oracle-5.13 No fix yet
- linux-oracle-5.15 Fixed in 5.15.0-1022.28~20.04.1
- linux-oracle-5.8 No fix yet
6 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 5.15.0-53.59
- linux-aws Fixed in 5.15.0-1023.27
- linux-azure Fixed in 5.15.0-1023.29
- linux-azure-fde Fixed in 5.15.0-1024.30.1
- linux-gcp Fixed in 5.15.0-1022.29
- linux-gke Fixed in 5.15.0-1020.25
- linux-gkeop Fixed in 5.15.0-1008.12
- linux-ibm Fixed in 5.15.0-1018.21
- linux-intel-iot-realtime No fix yet
- linux-intel-iotg Fixed in 5.15.0-1018.23
- linux-kvm Fixed in 5.15.0-1021.26
- linux-lowlatency Fixed in 5.15.0-53.59
- linux-nvidia Fixed in 5.15.0-1015.15
- linux-oem-5.17 No fix yet
- linux-oracle Fixed in 5.15.0-1022.28
- linux-raspi Fixed in 5.15.0-1018.20
- 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 Pro 14.04 LTS
- linux No fix yet
- linux-aws Fixed in 4.4.0-1121.127Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure Fixed in 4.15.0-1157.172~14.04.2Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-lts-xenial Fixed in 4.4.0-243.277~14.04.1Available 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 4.4.0-243.277Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws Fixed in 4.4.0-1159.174Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws-hwe Fixed in 4.15.0-1143.155~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure Fixed in 4.15.0-1159.174~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp Fixed in 4.15.0-1138.154~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-hwe Fixed in 4.15.0-197.208~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-kvm Fixed in 4.4.0-1122.132Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle Fixed in 4.15.0-1108.119~16.04.1Available 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 4.4.0-1091.98Available 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 4.15.0-2082.88Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 4.15.0-2066.72Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 4.15.0-1100.111Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 4.15.0-2047.52Available 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 5.4.0-1089.97+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 5.4.0-1095.101+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 5.4.0-1065.74Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 5.4.0-1093.102+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-realtime Fixed in 5.15.0-1025.28Available 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.