CVE-2023-52927
netfilter: allow exp not to be removed in nf_ct_find_expectation
02 Description
netfilter: allow exp not to be removed in nf_ct_find_expectation
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.31% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 24.3% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (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:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-15.
- 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
- 2025-03-14 14:25Z1 YR AGO
- Last updated
- 2026-10-15 00:17Z14 DAYS AGO
- Reserved
- 2024-08-21
- Assigning CNA
- Linux
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.8)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416Use After FreeVariant
- Data version
- 5.2
- Document digest
- 57a2b4f8cbf320524edb89145e042c04324db3271337ae5e1021c88ca042f939
05 Affected products
06 References
- git.kernel.orghttps://git.kernel.org/stable/c/3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec
- git.kernel.orghttps://git.kernel.org/stable/c/4914109a8e1e494c6aa9852f9e84ec77a5fc643f
- seadragnol.github.iohttps://seadragnol.github.io/posts/CVE-2023-52927/
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-457936.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-784472.html
07 Fixed in
Debian 12
- linux Fixed in 6.1.133-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.6.8-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 6.6.8-1
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 5.4.0-215.235
- linux-aws Fixed in 5.4.0-1145.155
- linux-aws-5.11 No fix yet
- linux-aws-5.13 No fix yet
- linux-aws-5.15 Fixed in 5.15.0-1083.90~20.04.1
- linux-aws-5.8 No fix yet
- linux-azure Fixed in 5.4.0-1150.157
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.15 Fixed in 5.15.0-1088.97~20.04.1
- linux-azure-5.8 No fix yet
- linux-azure-fde No fix yet
- linux-bluefield Fixed in 5.4.0-1105.112
- linux-gcp Fixed in 5.4.0-1148.157
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.15 Fixed in 5.15.0-1083.92~20.04.1
- linux-gcp-5.8 No fix yet
- linux-gke No fix yet
- linux-gke-5.15 No fix yet
- linux-gkeop No fix yet
- linux-gkeop-5.15 No fix yet
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.15 Fixed in 5.15.0-139.149~20.04.1
- linux-hwe-5.8 No fix yet
- linux-ibm Fixed in 5.4.0-1091.96
- linux-ibm-5.15 Fixed in 5.15.0-1075.78~20.04.1
- linux-intel-5.13 No fix yet
- linux-intel-iotg-5.15 Fixed in 5.15.0-1078.84~20.04.1
- linux-kvm Fixed in 5.4.0-1132.141
- linux-lowlatency-hwe-5.15 Fixed in 5.15.0-139.149~20.04.1
- 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 5.4.0-1143.153
- linux-oracle-5.11 No fix yet
- linux-oracle-5.13 No fix yet
- linux-oracle-5.15 Fixed in 5.15.0-1080.86~20.04.1
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 5.15.0-139.149
- linux-allwinner-5.19 No fix yet
- linux-aws Fixed in 5.15.0-1083.90
- linux-aws-5.19 No fix yet
- linux-aws-6.2 No fix yet
- linux-aws-6.5 No fix yet
- linux-azure Fixed in 5.15.0-1088.97
- linux-azure-5.19 No fix yet
- linux-azure-6.2 No fix yet
- linux-azure-6.5 No fix yet
- linux-azure-fde Fixed in 5.15.0-1088.97.1
- linux-azure-fde-5.19 No fix yet
- linux-azure-fde-6.2 No fix yet
- linux-gcp Fixed in 5.15.0-1082.91
- linux-gcp-5.19 No fix yet
- linux-gcp-6.2 No fix yet
- linux-gcp-6.5 No fix yet
- linux-gke Fixed in 5.15.0-1080.86
- linux-gkeop Fixed in 5.15.0-1065.73
- linux-hwe-5.19 No fix yet
- linux-hwe-6.2 No fix yet
- linux-hwe-6.5 No fix yet
- linux-ibm Fixed in 5.15.0-1075.78
- linux-intel-iot-realtime No fix yet
- linux-intel-iotg Fixed in 5.15.0-1078.84
- linux-kvm Fixed in 5.15.0-1079.84
- linux-lowlatency Fixed in 5.15.0-139.149
- linux-lowlatency-hwe-5.19 No fix yet
- linux-lowlatency-hwe-6.2 No fix yet
- linux-lowlatency-hwe-6.5 No fix yet
- linux-nvidia Fixed in 5.15.0-1077.78
- linux-nvidia-6.2 No fix yet
- linux-nvidia-6.5 No fix yet
- linux-nvidia-tegra Fixed in 5.15.0-1036.36
- linux-nvidia-tegra-igx Fixed in 5.15.0-1024.24
- linux-oem-5.17 No fix yet
- linux-oem-6.0 No fix yet
- linux-oem-6.1 No fix yet
- linux-oem-6.5 No fix yet
- linux-oracle Fixed in 5.15.0-1080.86
10 further packages in Ubuntu 22.04 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 24.04 LTS
- linux-raspi-realtime No fix yet
- linux-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 5.15.0-1065.67
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 No fix yet
- linux-azure Fixed in 4.15.0-1188.203~14.04.1Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro
- linux-lts-xenial No fix yet
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 No fix yet
- linux-aws No fix yet
- linux-aws-hwe Fixed in 4.15.0-1180.193~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure Fixed in 4.15.0-1188.203~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp Fixed in 4.15.0-1173.190~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-hwe Fixed in 4.15.0-237.249~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-kvm No fix yet
- linux-oracle Fixed in 4.15.0-1142.153~16.04.1Available 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 18.04 LTS
- linux Fixed in 4.15.0-237.249Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws Fixed in 4.15.0-1180.193Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws-5.4 Fixed in 5.4.0-1145.155~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure-4.15 Fixed in 4.15.0-1188.203Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure-5.4 Fixed in 5.4.0-1150.157~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp-4.15 Fixed in 4.15.0-1173.190Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp-5.4 Fixed in 5.4.0-1148.157~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-hwe-5.4 Fixed in 5.4.0-215.235~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-ibm-5.4 Fixed in 5.4.0-1092.97~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-kvm Fixed in 4.15.0-1163.168Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle Fixed in 4.15.0-1142.153Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle-5.4 Fixed in 5.4.0-1143.153~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-raspi-5.4 Fixed in 5.4.0-1129.142~18.04.1Available 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 20.04 LTS
- linux-azure-fde-5.15 Fixed in 5.15.0-1114.123~20.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-iot Fixed in 5.4.0-1051.54Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-nvidia-tegra-5.15 Fixed in 5.15.0-1039.39~20.04.1Available 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-preview 22.04 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-updates 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-updates 18.04 LTS
- linux-aws-fips Fixed in 4.15.0-2118.124Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 4.15.0-2097.103Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 4.15.0-1135.146Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 4.15.0-2081.87Available 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 5.4.0-1145.156+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 5.4.0-1151.158+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 5.4.0-1119.129Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 5.4.0-1148.157+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-updates 22.04 LTS
- linux-aws-fips Fixed in 5.15.0-1083.90+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 5.15.0-1088.97+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 5.15.0-139.149+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 5.15.0-1082.91+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 5.15.0-1076.78Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 5.15.0-1083.92Available 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.