01 Record
CVE-2023-42756
Kernel: netfilter: race condition between ipset_cmd_add and ipset_cmd_swap
MediumPUBLISHEDCNA: redhat
CNA base score4.4 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
02 Description
Kernel: netfilter: race condition between ipset_cmd_add and ipset_cmd_swap
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
- 0.27% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 19.5% of scored records. A rank, not a probability.
- NVD base score
- 4.7 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/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
- 2023-09-28 13:55Z3 YR AGO
- Last updated
- 2025-11-06 19:47Z11 MO AGO
- Reserved
- 2023-09-13
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 4.4)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class
- Data version
- 5.2
- Document digest
- 9a19728778a2a3c12f2f066243532a424b2a736d2547023a262cf7cf31be2de9
05 Affected products
VendorProductVersionsPlatforms
06 References
- access.redhat.comRHSA-2024:2394https://access.redhat.com/errata/RHSA-2024:2394
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-42756
- bugzilla.redhat.comRHBZ#2239848https://bugzilla.redhat.com/show_bug.cgi?id=2239848
- seclists.orghttps://seclists.org/oss-sec/2023/q3/242
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GISYSL3F6WIEVGHJGLC2MFNTUXHPTKQH/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GPMICQ2HVZO5UAM5KPXHAZKA2U3ZDOO6/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V5PDNWPKAP3WL5RQZ4RIDS6MG32OHH5R/
07 Fixed in
AlmaLinux 9
- bpftool Fixed in 7.3.0-427.13.1.el9_4
- kernel Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug-devel Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug-devel-matched Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug-modules Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug-modules-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug-modules-extra Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-devel Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-devel-matched Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-modules Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-modules-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-modules-extra Fixed in 5.14.0-427.13.1.el9_4
- kernel-abi-stablelists Fixed in 5.14.0-427.13.1.el9_4
- kernel-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-cross-headers Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-devel Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-devel-matched Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-modules Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-modules-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-modules-extra Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-uki-virt Fixed in 5.14.0-427.13.1.el9_4
- kernel-devel Fixed in 5.14.0-427.13.1.el9_4
- kernel-devel-matched Fixed in 5.14.0-427.13.1.el9_4
- kernel-doc Fixed in 5.14.0-427.13.1.el9_4
- kernel-headers Fixed in 5.14.0-427.13.1.el9_4
- kernel-modules Fixed in 5.14.0-427.13.1.el9_4
- kernel-modules-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-modules-extra Fixed in 5.14.0-427.13.1.el9_4
- kernel-rt Fixed in 5.14.0-427.13.1.el9_4
- kernel-rt-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-rt-debug Fixed in 5.14.0-427.13.1.el9_4
- kernel-rt-debug-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-rt-debug-devel Fixed in 5.14.0-427.13.1.el9_4
- kernel-rt-debug-modules Fixed in 5.14.0-427.13.1.el9_4
22 further packages in AlmaLinux 9 not shown (first 40 listed).
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- bpftool Fixed in 7.3.0-427.13.1.el9_4
- kernel Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug-devel Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug-devel-matched Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug-modules Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug-modules-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-debug-modules-extra Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-devel Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-devel-matched Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-modules Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-modules-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-64k-modules-extra Fixed in 5.14.0-427.13.1.el9_4
- kernel-abi-stablelists Fixed in 5.14.0-427.13.1.el9_4
- kernel-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-cross-headers Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-devel Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-devel-matched Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-modules Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-modules-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-modules-extra Fixed in 5.14.0-427.13.1.el9_4
- kernel-debug-uki-virt Fixed in 5.14.0-427.13.1.el9_4
- kernel-devel Fixed in 5.14.0-427.13.1.el9_4
- kernel-devel-matched Fixed in 5.14.0-427.13.1.el9_4
- kernel-doc Fixed in 5.14.0-427.13.1.el9_4
- kernel-headers Fixed in 5.14.0-427.13.1.el9_4
- kernel-modules Fixed in 5.14.0-427.13.1.el9_4
- kernel-modules-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-modules-extra Fixed in 5.14.0-427.13.1.el9_4
- kernel-rt Fixed in 5.14.0-427.13.1.el9_4
- kernel-rt-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-rt-debug Fixed in 5.14.0-427.13.1.el9_4
- kernel-rt-debug-core Fixed in 5.14.0-427.13.1.el9_4
- kernel-rt-debug-devel Fixed in 5.14.0-427.13.1.el9_4
- kernel-rt-debug-modules Fixed in 5.14.0-427.13.1.el9_4
22 further packages in CloudLinux 9 not shown (first 40 listed).
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 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 6.1.55-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.5.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 6.5.6-1
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-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-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 5.4.0-165.182
- linux-aws Fixed in 5.4.0-1112.121
- linux-aws-5.11 No fix yet
- linux-aws-5.13 No fix yet
- linux-aws-5.15 Fixed in 5.15.0-1048.53~20.04.1
- linux-aws-5.8 No fix yet
- linux-azure Fixed in 5.4.0-1118.125
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.15 Fixed in 5.15.0-1050.57~20.04.1
- linux-azure-5.8 No fix yet
- linux-azure-fde No fix yet
- linux-azure-fde-5.15 Fixed in 5.15.0-1050.57~20.04.1.1
- linux-bluefield Fixed in 5.4.0-1073.79
- linux-gcp Fixed in 5.4.0-1116.125
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.15 Fixed in 5.15.0-1045.53~20.04.2
- linux-gcp-5.8 No fix yet
- linux-gke No fix yet
- linux-gke-5.15 No fix yet
- linux-gkeop Fixed in 5.4.0-1079.83
- linux-gkeop-5.15 Fixed in 5.15.0-1031.37~20.04.1
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.15 Fixed in 5.15.0-87.97~20.04.1
- linux-hwe-5.8 No fix yet
- linux-ibm Fixed in 5.4.0-1059.64
- linux-ibm-5.15 Fixed in 5.15.0-1041.44~20.04.1
- linux-intel-5.13 No fix yet
- linux-iot Fixed in 5.4.0-1024.25
- linux-kvm Fixed in 5.4.0-1101.107
- linux-lowlatency-hwe-5.15 Fixed in 5.15.0-87.96~20.04.1
- 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 5.4.0-1111.120
- linux-oracle-5.11 No fix yet
- linux-oracle-5.13 No fix yet
9 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 5.15.0-87.97
- linux-allwinner-5.19 No fix yet
- linux-aws Fixed in 5.15.0-1048.53
- linux-aws-5.19 No fix yet
- linux-aws-6.2 Fixed in 6.2.0-1014.14~22.04.1
- linux-aws-6.5 No fix yet
- linux-azure Fixed in 5.15.0-1050.57
- linux-azure-5.19 No fix yet
- linux-azure-6.2 Fixed in 6.2.0-1015.15~22.04.1
- linux-azure-6.5 No fix yet
- linux-azure-fde Fixed in 5.15.0-1050.57.1
- linux-azure-fde-5.19 No fix yet
- linux-azure-fde-6.2 Fixed in 6.2.0-1015.15~22.04.1.1
- linux-gcp Fixed in 5.15.0-1045.53
- linux-gcp-5.19 No fix yet
- linux-gcp-6.2 Fixed in 6.2.0-1017.19~22.04.1
- linux-gke Fixed in 5.15.0-1045.50
- linux-gkeop Fixed in 5.15.0-1031.37
- linux-hwe-5.19 No fix yet
- linux-hwe-6.2 Fixed in 6.2.0-35.35~22.04.1
- linux-ibm Fixed in 5.15.0-1041.44
- linux-kvm Fixed in 5.15.0-1045.50
- linux-lowlatency Fixed in 5.15.0-87.96
- linux-lowlatency-hwe-5.19 No fix yet
- linux-lowlatency-hwe-6.2 Fixed in 6.2.0-1015.15~22.04.1
- linux-nvidia Fixed in 5.15.0-1039.39
- linux-oem-5.17 No fix yet
- linux-oem-6.0 No fix yet
- linux-oem-6.1 Fixed in 6.1.0-1024.24
- linux-oem-6.5 Fixed in 6.5.0-1007.7
- linux-oracle Fixed in 5.15.0-1046.52
- linux-raspi Fixed in 5.15.0-1041.44
- 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-starfive-6.2 Fixed in 6.2.0-1007.8~22.04.1
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 5.15.0-1028.30
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-aws-5.4 Fixed in 5.4.0-1112.121~18.04.2Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure-5.4 Fixed in 5.4.0-1118.125~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp-5.4 Fixed in 5.4.0-1116.125~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-hwe-5.4 Fixed in 5.4.0-165.182~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-ibm-5.4 Fixed in 5.4.0-1059.64~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle-5.4 Fixed in 5.4.0-1111.120~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-raspi-5.4 Fixed in 5.4.0-1096.107~18.04.1Available 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 20.04 LTS
- linux-aws-fips Fixed in 5.4.0-1112.121+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 5.4.0-1118.125+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 5.4.0-1087.96Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 5.4.0-1116.125+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 Realtime 22.04 LTS
- linux-intel-iot-realtime Fixed in 5.15.0-1041.43Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 5.15.0-1049.55Available 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.