CVE-2022-3619 Linux Kernel Bluetooth l2cap_core.c l2cap_recv_acldata memory leak

What is CVE-2022-3619?

CVE-2022-3619 is a low-severity denial of service vulnerability in Linux kernel, published on 20 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability has been found in Linux Kernel and classified as problematic. This vulnerability affects the function l2cap_recv_acldata of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The manipulation leads to memory leak. It is recommended to apply a patch to fix this issue. VDB-211918 is the identifier assigned to this vulnerability.

Weakness: CWE-401, CWE-404

Which versions are affected by CVE-2022-3619?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-3619?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-3619 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-3619 exists.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2022-3619, GHSA-hq5f-3c8f-c5w8, UBUNTU-CVE-2022-3619.