CVE-2023-6606
Kernel: out-of-bounds read vulnerability in smbcalcsize
02 Description
Kernel: out-of-bounds read vulnerability in smbcalcsize
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
- 0.52% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 44.2% of scored records. A rank, not a probability.
- NVD base score
- 7.1 (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:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-14.
- 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
- 2023-12-08 16:58Z2 YR AGO
- Last updated
- 2026-10-14 22:15Z15 DAYS AGO
- Reserved
- 2023-12-08
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.1)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Weaknesses
- CWE-125Out-of-bounds ReadBase
- Data version
- 5.2
- Document digest
- 80e5ffa88f33194f3ca10bc8b4028b9f74904278bb78d71f254f856c4ea42251
05 Affected products
06 References
- access.redhat.comRHSA-2024:0723https://access.redhat.com/errata/RHSA-2024:0723
- access.redhat.comRHSA-2024:0725https://access.redhat.com/errata/RHSA-2024:0725
- access.redhat.comRHSA-2024:0881https://access.redhat.com/errata/RHSA-2024:0881
- access.redhat.comRHSA-2024:0897https://access.redhat.com/errata/RHSA-2024:0897
- access.redhat.comRHSA-2024:1188https://access.redhat.com/errata/RHSA-2024:1188
- access.redhat.comRHSA-2024:1248https://access.redhat.com/errata/RHSA-2024:1248
- access.redhat.comRHSA-2024:1404https://access.redhat.com/errata/RHSA-2024:1404
- access.redhat.comRHSA-2024:2094https://access.redhat.com/errata/RHSA-2024:2094
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-6606
- bugzilla.kernel.orghttps://bugzilla.kernel.org/show_bug.cgi?id=218218
- bugzilla.redhat.comRHBZ#2253611https://bugzilla.redhat.com/show_bug.cgi?id=2253611
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-794697.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-613116.html
07 Fixed in
AlmaLinux 8
- bpftool Fixed in 4.18.0-513.18.1.el8_9
- kernel Fixed in 4.18.0-513.18.1.el8_9
- kernel-abi-stablelists Fixed in 4.18.0-513.18.1.el8_9
- kernel-core Fixed in 4.18.0-513.18.1.el8_9
- kernel-cross-headers Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-core Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-modules Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-modules-extra Fixed in 4.18.0-513.18.1.el8_9
- kernel-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-doc Fixed in 4.18.0-513.18.1.el8_9
- kernel-modules Fixed in 4.18.0-513.18.1.el8_9
- kernel-modules-extra Fixed in 4.18.0-513.18.1.el8_9
- kernel-tools Fixed in 4.18.0-513.18.1.el8_9
- kernel-tools-libs Fixed in 4.18.0-513.18.1.el8_9
- kernel-tools-libs-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-core Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-modules Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-modules-extra Fixed in 4.18.0-513.18.1.el8_9
- perf Fixed in 4.18.0-513.18.1.el8_9
- python3-perf Fixed in 4.18.0-513.18.1.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 4.18.0-513.18.1.el8_9
- kernel Fixed in 4.18.0-513.18.1.el8_9
- kernel-abi-stablelists Fixed in 4.18.0-513.18.1.el8_9
- kernel-core Fixed in 4.18.0-513.18.1.el8_9
- kernel-cross-headers Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-core Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-modules Fixed in 4.18.0-513.18.1.el8_9
- kernel-debug-modules-extra Fixed in 4.18.0-513.18.1.el8_9
- kernel-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-doc Fixed in 4.18.0-513.18.1.el8_9
- kernel-modules Fixed in 4.18.0-513.18.1.el8_9
- kernel-modules-extra Fixed in 4.18.0-513.18.1.el8_9
- kernel-tools Fixed in 4.18.0-513.18.1.el8_9
- kernel-tools-libs Fixed in 4.18.0-513.18.1.el8_9
- kernel-tools-libs-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-core Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-devel Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-modules Fixed in 4.18.0-513.18.1.el8_9
- kernel-zfcpdump-modules-extra Fixed in 4.18.0-513.18.1.el8_9
- perf Fixed in 4.18.0-513.18.1.el8_9
- python3-perf Fixed in 4.18.0-513.18.1.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 6.1.76-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.6.9-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 6.6.9-1
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 5.4.0-170.188
- linux-aws Fixed in 5.4.0-1117.127
- linux-aws-5.11 No fix yet
- linux-aws-5.13 No fix yet
- linux-aws-5.15 Fixed in 5.15.0-1052.57~20.04.1
- linux-aws-5.8 No fix yet
- linux-azure Fixed in 5.4.0-1122.129
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.15 Fixed in 5.15.0-1054.62~20.04.1
- linux-azure-5.8 No fix yet
- linux-azure-fde No fix yet
- linux-bluefield Fixed in 5.4.0-1077.83
- linux-gcp Fixed in 5.4.0-1121.130
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.15 Fixed in 5.15.0-1049.57~20.04.1
- linux-gcp-5.8 No fix yet
- linux-gke No fix yet
- linux-gke-5.15 No fix yet
- linux-gkeop Fixed in 5.4.0-1084.88
- linux-gkeop-5.15 Fixed in 5.15.0-1035.41~20.04.1
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.15 Fixed in 5.15.0-92.102~20.04.1
- linux-hwe-5.8 No fix yet
- linux-ibm Fixed in 5.4.0-1064.69
- linux-ibm-5.15 Fixed in 5.15.0-1045.48~20.04.1
- linux-intel-5.13 No fix yet
- linux-intel-iotg-5.15 Fixed in 5.15.0-1048.54~20.04.1
- linux-iot Fixed in 5.4.0-1029.30
- linux-kvm Fixed in 5.4.0-1105.112
- linux-lowlatency-hwe-5.15 Fixed in 5.15.0-92.102~20.04.1
- linux-nvidia-tegra-5.15 Fixed in 5.15.0-1022.22~20.04.1
- 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 5.4.0-1116.125
- 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 5.15.0-92.102
- linux-allwinner-5.19 No fix yet
- linux-aws Fixed in 5.15.0-1052.57
- linux-aws-5.19 No fix yet
- linux-aws-6.2 Fixed in 6.2.0-1018.18~22.04.1
- linux-aws-6.5 No fix yet
- linux-azure Fixed in 5.15.0-1054.62
- linux-azure-5.19 No fix yet
- linux-azure-6.2 Fixed in 6.2.0-1019.19~22.04.1
- linux-azure-6.5 No fix yet
- linux-azure-fde Fixed in 5.15.0-1054.62.1
- linux-azure-fde-5.19 No fix yet
- linux-azure-fde-6.2 Fixed in 6.2.0-1019.19~22.04.1.1
- linux-gcp Fixed in 5.15.0-1049.57
- linux-gcp-5.19 No fix yet
- linux-gcp-6.2 Fixed in 6.2.0-1021.23~22.04.1
- linux-gcp-6.5 No fix yet
- linux-gke Fixed in 5.15.0-1049.54
- linux-gkeop Fixed in 5.15.0-1035.41
- linux-hwe-5.19 No fix yet
- linux-hwe-6.2 No fix yet
- linux-hwe-6.5 Fixed in 6.5.0-15.15~22.04.1
- linux-ibm Fixed in 5.15.0-1045.48
- linux-intel-iotg Fixed in 5.15.0-1047.53
- linux-kvm Fixed in 5.15.0-1049.54
- linux-lowlatency Fixed in 5.15.0-92.102
- linux-lowlatency-hwe-5.19 No fix yet
- linux-lowlatency-hwe-6.2 No fix yet
- linux-lowlatency-hwe-6.5 Fixed in 6.5.0-15.15.1.1~22.04.1
- linux-nvidia Fixed in 5.15.0-1043.43
- linux-nvidia-6.2 Fixed in 6.2.0-1015.15
- linux-nvidia-6.5 Fixed in 6.5.0-1014.14
- linux-nvidia-tegra Fixed in 5.15.0-1021.21
- linux-nvidia-tegra-igx Fixed in 5.15.0-1008.8
- linux-oem-5.17 No fix yet
- linux-oem-6.0 No fix yet
- linux-oem-6.1 Fixed in 6.1.0-1029.29
- linux-oem-6.5 Fixed in 6.5.0-1013.14
- linux-oracle Fixed in 5.15.0-1050.56
- linux-oracle-6.5 No fix yet
7 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
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 5.15.0-1033.35
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 4.4.0-1127.133Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure Fixed in 4.15.0-1173.188~14.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-lts-xenial Fixed in 4.4.0-250.284~14.04.1Available 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 4.4.0-250.284Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws Fixed in 4.4.0-1165.180Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws-hwe Fixed in 4.15.0-1164.177~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure Fixed in 4.15.0-1173.188~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp Fixed in 4.15.0-1158.175~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-hwe Fixed in 4.15.0-221.232~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-kvm Fixed in 4.4.0-1128.138Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle Fixed in 4.15.0-1127.138~16.04.1Available 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 4.15.0-221.232Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws Fixed in 4.15.0-1164.177Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws-5.4 Fixed in 5.4.0-1117.127~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure-4.15 Fixed in 4.15.0-1173.188Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure-5.4 Fixed in 5.4.0-1122.129~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp-4.15 Fixed in 4.15.0-1158.175Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp-5.4 Fixed in 5.4.0-1121.130~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-hwe-5.4 Fixed in 5.4.0-170.188~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-ibm-5.4 Fixed in 5.4.0-1064.69~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-kvm Fixed in 4.15.0-1148.153Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle Fixed in 4.15.0-1127.138Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle-5.4 Fixed in 5.4.0-1116.125~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-raspi-5.4 Fixed in 5.4.0-1101.113~18.04.1Available 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-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 Fixed in 4.4.0-1097.104Available 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 4.15.0-2103.109Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 4.15.0-2082.88Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 4.15.0-1119.130Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 4.15.0-2066.71Available 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 5.4.0-1117.127+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 5.4.0-1122.129+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 5.4.0-1091.101Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 5.4.0-1121.130+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-gcp-fips Fixed in 5.15.0-1055.63+fips2Available 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 5.15.0-1046.48Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 5.15.0-1053.59Available 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.