Vulnerability · Published Oct 21, 2022 · Assigned by VulDB
CVE-2022-3640Linux Kernel Bluetooth l2cap_core.c l2cap_conn_del use after free
Medium 5.5
In plain English
A medium-severity memory corruption in Kernel from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)1.2%top 31.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A vulnerability, which was classified as critical, was found in Linux Kernel. Affected is the function l2cap_conn_del of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-211944.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | bpftool | 7.0.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug-devel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug-devel-matched | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug-modules | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug-modules-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-debug-modules-extra | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-devel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-devel-matched | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-modules | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-modules-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-64k-modules-extra | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-abi-stablelists | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-core | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-cross-headers | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-debug | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-debug | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-debug-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-debug-devel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-debug-devel-matched | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-debug-modules | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-debug-modules-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-debug-modules-extra | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-debug-uki-virt | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-devel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-devel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-devel-matched | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-doc | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-doc | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-headers | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:8 | kernel-modules | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-modules | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-modules-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-modules-extra | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-rt | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-core | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug-core | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug-devel | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug-kvm | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug-modules | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug-modules-core | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-debug-modules-extra | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-devel | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-kvm | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-modules | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-modules-core | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:9 | kernel-rt-modules-extra | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux:8 | kernel-tools | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-tools | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-tools-libs | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-tools-libs-devel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-uki-virt | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-zfcpdump | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-zfcpdump-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-zfcpdump-devel | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-zfcpdump-devel-matched | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-zfcpdump-modules | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | kernel-zfcpdump-modules-core | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | kernel-zfcpdump-modules-extra | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | perf | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | perf | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:8 | python3-perf | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
| AlmaLinux:9 | python3-perf | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux:9 | rtla | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
| Debian:12 | linux | 6.0.8-1 | DEBIAN-CVE-2022-3640 |
| Debian:13 | linux | 6.0.8-1 | DEBIAN-CVE-2022-3640 |
| Debian:14 | linux | 6.0.8-1 | DEBIAN-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux | 5.15.0-60.66 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux | 5.15.0-60.66 | USN-5851-1 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1030.34 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1030.34 | USN-5876-1 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1033.40 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1033.40 | USN-5851-1 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1033.40.1 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1033.40.1 | USN-5876-1 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1029.36 | USN-5876-1 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1029.36 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1027.32 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1027.32 | USN-5860-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1015.19 | USN-5851-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1015.19 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | 5.19.0-32.33~22.04.1 | USN-5879-1 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | 5.19.0-32.33~22.04.1 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1025.28 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1025.28 | USN-5851-1 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1025.30 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1025.30 | USN-5876-1 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1028.33 | USN-5851-1 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1028.33 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-60.66 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-60.66 | USN-5851-1 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1017.17 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1029.35 | USN-5851-1 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1029.35 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1024.26 | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1024.26 | USN-5851-1 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2022-3640 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2022-3640 |
Affected products (as reported)
Weakness: CWE-119 · Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
References
- https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=42cf46dea905a80f6de218e837ba4d4cc33d6979
- https://vuldb.com/?id.211944
- FEDORA-2022-64ab9153c0 vendor-advisory
- FEDORA-2022-65a0a3504a vendor-advisory
- FEDORA-2022-7aadaadebc vendor-advisory
- [debian-lts-announce] 20221222 [SECURITY] [DLA 3244-1] linux-5.10 security update mailing-list
- [debian-lts-announce] 20221223 [SECURITY] [DLA 3245-1] linux security update mailing-list