Info Leak in l2cap_core in the Linux Kernel

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Summary

CVECVE-2022-42896
StatePUBLISHED
AssignerGoogle
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-11-23 15:15:10 UTC
Updated2026-10-14 19:16:52 UTC
DescriptionThere are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth. A remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim. We recommend upgrading past commit  https://www.google.com/url https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4 https://www.google.com/url

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-416 | CWE-416 CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary8HIGHCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
3.1CNACVSS8HIGHCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux Kernel affected 3.0.0 711f8c3fb3db61897080468586b970c87c61d9e4 custom Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected V1.1 custom Not specified

References

ReferenceSourceLinkTags
Bluetooth: L2CAP: Fix accepting connection request for invalid SPSM · torvalds/linux@711f8c3 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-794697.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
???????? af854a3a-2127-422b-91ae-364da2661108 kernel.dance Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 160381 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2023-12017)
  • 160382 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel-container (ELSA-2023-12018)
  • 160447 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2023-12109)
  • 160457 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel-container (ELSA-2023-12121)
  • 160458 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2023-12117)
  • 160461 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel-container (ELSA-2023-12118)
  • 160462 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2023-12119)
  • 160583 Oracle Enterprise Linux Security Update for kernel (ELSA-2023-2458)
  • 160859 Oracle Enterprise Linux Security Update for kernel (ELSA-2023-4517)
  • 161426 Oracle Enterprise Linux Security Update for kernel (ELSA-2024-1249)
  • 181383 Debian Security Update for linux (CVE-2022-42896)
  • 181440 Debian Security Update for linux-5.10 (DLA 3244-1)
  • 181565 Debian Security Update for linux (DLA 3245-1)
  • 199076 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5780-1)
  • 199080 Ubuntu Security Notification for Linux kernel (OEM) Vulnerability (USN-5783-1)
  • 199103 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5803-1)
  • 199105 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5804-1)
  • 199106 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5804-2)
  • 199110 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5809-1)
  • 199111 Ubuntu Security Notification for Linux kernel (IBM) Vulnerabilities (USN-5808-1)
  • 199118 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5814-1)
  • 199121 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5813-1)
  • 199132 Ubuntu Security Notification for Linux kernel (Raspberry Pi) Vulnerabilities (USN-5829-1)
  • 199136 Ubuntu Security Notification for Linux kernel (Azure CVM) Vulnerabilities (USN-5831-1)
  • 199137 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5830-1)
  • 199138 Ubuntu Security Notification for Linux kernel (Raspberry Pi) Vulnerabilities (USN-5832-1)
  • 199160 Ubuntu Security Notification for Linux kernel (GKE) Vulnerabilities (USN-5860-1)
  • 199165 Ubuntu Security Notification for Linux kernel (Dell300x) Vulnerabilities (USN-5861-1)
  • 199179 Ubuntu Security Notification for Linux kernel (GKE) Vulnerabilities (USN-5877-1)
  • 199180 Ubuntu Security Notification for Linux kernel (GKE) Vulnerabilities (USN-5875-1)
  • 199183 Ubuntu Security Notification for Linux kernel (HWE) Vulnerabilities (USN-5879-1)
  • 199207 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5914-1)
  • 199213 Ubuntu Security Notification for Linux kernel (BlueField) Vulnerabilities (USN-5918-1)
  • 199490 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5802-1)
  • 199519 Ubuntu Security Notification for Linux kernel (Azure) Vulnerabilities (USN-5863-1)
  • 199547 Ubuntu Security Notification for Linux kernel (AWS) Vulnerabilities (USN-5794-1)
  • 241417 Red Hat Update for kernel security (RHSA-2023:2458)
  • 241468 Red Hat Update for kernel-rt (RHSA-2023:2148)
  • 241592 Red Hat Update for kernel-rt (RHSA-2023:3462)
  • 241615 Red Hat Update for kpatch-patch (RHSA-2023:3517)
  • 241658 Red Hat Update for kernel (RHSA-2023:3461)
  • 241823 Red Hat Update for kernel (RHSA-2023:4137)
  • 241830 Red Hat Update for kernel-rt (RHSA-2023:4138)
  • 241858 Red Hat Update for kpatch-patch (RHSA-2023:4230)
  • 241927 Red Hat Update for kernel-rt (RHSA-2023:4541)
  • 241934 Red Hat Update for kpatch-patch (RHSA-2023:4531)
  • 241936 Red Hat Update for kernel (RHSA-2023:4517)
  • 242140 Red Hat Update for kpatch-patch (RHSA-2023:5580)
  • 242152 Red Hat Update for kernel (RHSA-2023:5589)
  • 242155 Red Hat Update for kernel-rt (RHSA-2023:5588)
  • 243051 Red Hat Update for kernel (RHSA-2024:1249)
  • 243068 Red Hat Update for kpatch-patch (RHSA-2024:1323)
  • 243071 Red Hat Update for kernel-rt (RHSA-2024:1332)
  • 257311 CentOS Security Update for kernel (CESA-2024:1249)
  • 354272 Amazon Linux Security Advisory for kernel : ALAS2-2022-1903
  • 377891 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0002)
  • 378468 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-20230042)
  • 378473 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX2-SA-2023:0021)
  • 378512 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0042)
  • 672532 EulerOS Security Update for kernel (EulerOS-SA-2023-1126)
  • 753014 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:4505-1)
  • 753020 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:4585-1)
  • 753034 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:4504-1)
  • 753038 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:4573-1)
  • 753039 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:4574-1)
  • 753045 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:4503-1)
  • 753047 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:4566-1)
  • 753051 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:4589-1)
  • 753060 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:4615-1)
  • 753061 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:4616-1)
  • 753062 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:4613-1)
  • 753063 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:4617-1)
  • 941023 AlmaLinux Security Update for kernel (ALSA-2023:2458)
  • 941061 AlmaLinux Security Update for kernel-rt (ALSA-2023:2148)
  • 941227 AlmaLinux Security Update for kernel (ALSA-2023:4517)
  • 941228 AlmaLinux Security Update for kernel-rt (ALSA-2023:4541)
  • 961032 Rocky Linux Security Update for kernel (RLSA-2023:4517)
  • 961046 Rocky Linux Security Update for kernel-rt (RLSA-2023:4541)

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