CVE-2022-3619: Linux Kernel Bluetooth l2cap_core.c l2cap_recv_acldata memory leak
First published: Thu Oct 20 2022(Updated: )
A memory leak flaw was found in the Linux kernel’s L2CAP bluetooth functionality. This issue occurs when a user generates malicious packets, triggering the l2cap_recv_acldata function. This flaw allows a local or bluetooth connection user to potentially crash the system.
Credit: cna@vuldb.com cna@vuldb.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-477.10.1.rt7.274.el8_8 | 0:4.18.0-477.10.1.rt7.274.el8_8 |
| redhat/kernel | <0:4.18.0-477.10.1.el8_8 | 0:4.18.0-477.10.1.el8_8 |
| redhat/kernel | <0:5.14.0-284.11.1.el9_2 | 0:5.14.0-284.11.1.el9_2 |
| redhat/kernel-rt | <0:5.14.0-284.11.1.rt14.296.el9_2 | 0:5.14.0-284.11.1.rt14.296.el9_2 |
| Linux Linux kernel | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.12.5-1 6.12.6-1 |
Remedy
To mitigate these vulnerabilities on the operating system level, disable the Bluetooth functionality via blocklisting kernel modules in the Linux kernel. The kernel modules can be prevented from being loaded by using system-wide modprobe rules. Instructions on how to disable Bluetooth modules are available on the customer portal at https://access.redhat.com/solutions/268293. Alternatively, bluetooth can be disabled within the hardware or at the BIOS level, which will also provide effective mitigation as the kernel will not detect Bluetooth hardware on the system.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-3619 https://nvd.nist.gov/vuln/detail/CVE-2022-3619 https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=97097c85c088e11651146da32a4e1cdb9dfa6193 https://vuldb.com/?id.211918
- https://bugzilla.redhat.com/show_bug.cgi?id=2154235
- https://access.redhat.com/errata/RHSA-2023:2736
- https://access.redhat.com/errata/RHSA-2023:2951
- https://access.redhat.com/errata/RHSA-2023:2458
- https://access.redhat.com/errata/RHSA-2023:2148
- https://access.redhat.com/security/cve/cve-2022-3619
- https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=97097c85c088e11651146da32a4e1cdb9dfa6193
- https://vuldb.com/?id.211918
- https://launchpad.net/bugs/cve/CVE-2022-3619
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2155871
- https://access.redhat.com/errata/RHSA-2024:0724
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-3619
- https://nvd.nist.gov/vuln/detail/CVE-2022-3619
- https://security-tracker.debian.org/tracker/CVE-2022-3619
- https://ubuntu.com/security/CVE-2022-3619
- https://git.kernel.org/linus/7c9524d929648935bac2bbb4c20437df8f9c3f42
Parent vulnerabilities
(Appears in the following advisories)
- collector/redhat-cve
- collector/nvd-index
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/weakness
- agent/author
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2022-3619
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/title
- collector/usn-cve
- source/Ubuntu
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- collector/security-tracker-debian
- source/Debian
- agent/remedy
- agent/references
- agent/last-modified-date
- agent/softwarecombine
- agent/tags
- agent/description
- agent/event
- agent/trending
- package-manager/redhat
- vendor/linux
- canonical/linux linux kernel
- package-manager/debian