CVE-2022-3640

Name: CVE-2022-3640
Creator: NVD / NIST
Published: 2022-10-21T15:15:09.427+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.07%

Last modified Jun 17, 2026

CVE-2022-3640 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 1.07% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.07%

60.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 4.9.326, < 4.9.333
Linux	Linux Kernel	>= 4.14.291, < 4.14.299
Linux	Linux Kernel	>= 4.19.255, < 4.19.265
Linux	Linux Kernel	>= 5.4.209, < 5.4.224
Linux	Linux Kernel	>= 5.10.135, < 5.10.154
Linux	Linux Kernel	>= 5.15.59, < 5.15.79
Linux	Linux Kernel	>= 5.18.16, < 6.0.8
Fedoraproject	Fedora	35
Fedoraproject	Fedora	36
Fedoraproject	Fedora	37
Debian	Debian Linux	10.0

References

https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=42cf46dea905a80f6de218e837ba4d4cc33d6979Exploit, Mailing List, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00031.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00034.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DGOIRR72OAFE53XZRUDZDP7INGLIC3E3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OD7VWUT7YAU4CJ247IF44NGVOAODAJGC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XG2UPX3MQ7RKRJEUMGEH2TLPKZJCBU5C/
https://vuldb.com/?id.211944Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=42cf46dea905a80f6de218e837ba4d4cc33d6979Exploit, Mailing List, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00031.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00034.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DGOIRR72OAFE53XZRUDZDP7INGLIC3E3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OD7VWUT7YAU4CJ247IF44NGVOAODAJGC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XG2UPX3MQ7RKRJEUMGEH2TLPKZJCBU5C/
https://vuldb.com/?id.211944Third Party Advisory

Timeline

Published: Oct 21, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-3640?

How severe is CVE-2022-3640?

CVE-2022-3640 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.07% probability of exploitation in the next 30 days.

How do I fix CVE-2022-3640?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-3640?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST