CVE-2023-40283
An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.
02 Description
An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.
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
- 0.55% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 45.7% 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
- 2023-08-14 00:00Z3 YR AGO
- Last updated
- 2026-10-14 23:47Z14 DAYS AGO
- Reserved
- 2023-08-14
- Assigning CNA
- mitre
- 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
- 424c406a47e9bbc5de67f41d39459c65e0d8660f479912ee76ad2385018bab50
05 Affected products
06 References
- git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1728137b33c00d5a2b5110ed7aafb42e7c32e4a1
- github.comhttps://github.com/torvalds/linux/commit/1728137b33c00d5a2b5110ed7aafb42e7c32e4a1
- cdn.kernel.orghttps://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.10
- www.debian.orgDSA-5480https://www.debian.org/security/2023/dsa-5480
- www.debian.orgDSA-5492https://www.debian.org/security/2023/dsa-5492
- packetstormsecurity.comhttp://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html
- lists.debian.org[debian-lts-announce] 20231019 [SECURITY] [DLA 3623-1] linux-5.10 security updatehttps://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20231020-0007/
- packetstormsecurity.comhttp://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
- lists.debian.org[debian-lts-announce] 20240111 [SECURITY] [DLA 3710-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-806742.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 6.1.52-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 6.4.11-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 6.4.11-1
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 5.4.0-163.180
- linux-aws Fixed in 5.4.0-1110.119
- linux-aws-5.11 No fix yet
- linux-aws-5.13 No fix yet
- linux-aws-5.15 Fixed in 5.15.0-1045.50~20.04.1
- linux-aws-5.8 No fix yet
- linux-azure Fixed in 5.4.0-1116.123
- linux-azure-5.11 No fix yet
- linux-azure-5.13 No fix yet
- linux-azure-5.15 Fixed in 5.15.0-1047.54~20.04.1
- linux-azure-5.8 No fix yet
- linux-azure-fde No fix yet
- linux-bluefield Fixed in 5.4.0-1071.77
- linux-gcp Fixed in 5.4.0-1113.122
- linux-gcp-5.11 No fix yet
- linux-gcp-5.13 No fix yet
- linux-gcp-5.15 Fixed in 5.15.0-1042.50~20.04.1
- linux-gcp-5.8 No fix yet
- linux-gke No fix yet
- linux-gke-5.15 No fix yet
- linux-gkeop Fixed in 5.4.0-1077.81
- linux-gkeop-5.15 Fixed in 5.15.0-1028.33~20.04.1
- linux-hwe-5.11 No fix yet
- linux-hwe-5.13 No fix yet
- linux-hwe-5.15 Fixed in 5.15.0-84.93~20.04.1
- linux-hwe-5.8 No fix yet
- linux-ibm Fixed in 5.4.0-1057.62
- linux-ibm-5.15 Fixed in 5.15.0-1038.41~20.04.1
- linux-intel-5.13 No fix yet
- linux-intel-iotg-5.15 Fixed in 5.15.0-1040.46~20.04.1
- linux-iot Fixed in 5.4.0-1022.23
- linux-kvm Fixed in 5.4.0-1099.105
- linux-lowlatency-hwe-5.15 Fixed in 5.15.0-84.93~20.04.1
- linux-nvidia-tegra-5.15 Fixed in 5.15.0-1018.18~20.04.1
- 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 5.4.0-1109.118
- 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 5.15.0-84.93
- linux-allwinner-5.19 No fix yet
- linux-aws Fixed in 5.15.0-1045.50
- linux-aws-5.19 No fix yet
- linux-aws-6.2 Fixed in 6.2.0-1012.12~22.04.1
- linux-azure Fixed in 5.15.0-1047.54
- linux-azure-5.19 No fix yet
- linux-azure-6.2 Fixed in 6.2.0-1012.12~22.04.1
- linux-azure-fde Fixed in 5.15.0-1047.54.1
- linux-azure-fde-5.19 No fix yet
- linux-gcp Fixed in 5.15.0-1042.50
- linux-gcp-5.19 No fix yet
- linux-gcp-6.2 Fixed in 6.2.0-1014.14~22.04.1
- linux-gke Fixed in 5.15.0-1042.47
- linux-gkeop Fixed in 5.15.0-1028.33
- linux-hwe-5.19 No fix yet
- linux-hwe-6.2 Fixed in 6.2.0-33.33~22.04.1
- linux-ibm Fixed in 5.15.0-1038.41
- linux-intel-iotg Fixed in 5.15.0-1040.46
- linux-kvm Fixed in 5.15.0-1042.47
- linux-lowlatency Fixed in 5.15.0-84.93
- linux-lowlatency-hwe-5.19 No fix yet
- linux-lowlatency-hwe-6.2 Fixed in 6.2.0-1013.13~22.04.1
- linux-nvidia Fixed in 5.15.0-1033.33
- linux-nvidia-6.2 Fixed in 6.2.0-1011.11
- linux-nvidia-tegra Fixed in 5.15.0-1018.18
- linux-nvidia-tegra-igx Fixed in 5.15.0-1005.5
- linux-oem-5.17 No fix yet
- linux-oem-6.0 Fixed in 6.0.0-1021.21
- linux-oem-6.1 Fixed in 6.1.0-1021.21
- linux-oracle Fixed in 5.15.0-1044.50
- linux-raspi Fixed in 5.15.0-1038.41
- 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 5.15.0-1024.26
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 4.4.0-1123.129Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure Fixed in 4.15.0-1170.185~14.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-lts-xenial Fixed in 4.4.0-245.279~14.04.1Available 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 4.4.0-245.279Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws Fixed in 4.4.0-1161.176Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws-hwe Fixed in 4.15.0-1161.174~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure Fixed in 4.15.0-1170.185~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp Fixed in 4.15.0-1155.172~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-hwe Fixed in 4.15.0-218.229~16.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-kvm Fixed in 4.4.0-1124.134Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle Fixed in 4.15.0-1124.135~16.04.1Available 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 4.15.0-218.229Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws Fixed in 4.15.0-1161.174Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-aws-5.4 Fixed in 5.4.0-1110.119~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure-4.15 Fixed in 4.15.0-1170.185Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure-5.4 Fixed in 5.4.0-1116.123~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp-4.15 Fixed in 4.15.0-1155.172Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-gcp-5.4 Fixed in 5.4.0-1113.122~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-hwe-5.4 Fixed in 5.4.0-163.180~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-ibm-5.4 Fixed in 5.4.0-1057.62~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-kvm Fixed in 4.15.0-1145.150Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle Fixed in 4.15.0-1124.135Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-oracle-5.4 Fixed in 5.4.0-1109.118~18.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-raspi-5.4 Fixed in 5.4.0-1094.105~18.04.1Available 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-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 4.4.0-1093.100Available 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 4.15.0-2100.106Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 4.15.0-2079.85Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 4.15.0-1116.127Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 4.15.0-2063.68Available 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 5.4.0-1110.119+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 5.4.0-1116.123+fips1Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-fips Fixed in 5.4.0-1085.94Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-gcp-fips Fixed in 5.4.0-1113.122+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 5.15.0-1039.41Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-realtime Fixed in 5.15.0-1046.52Available 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.
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.