CVE-2023-40283

kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

NVD
RedHat

An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.

A flaw was found in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Bluetooth subsystem in the Linux Kernel. This issue may allow a user to cause a use-after-free problem due to sk's children being mishandled.

*Credits: N/A

CVSS Scores

NISTv3.1 7.8

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-08-14 CVE Reserved
2023-08-14 CVE Published
2023-08-22 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (12)

URL	Tag	Source
http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html	Third Party Advisory
http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.10	Release Notes
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html	Mailing List
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html	Mailing List
https://security.netapp.com/advisory/ntap-20231020-0007	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1728137b33c00d5a2b5110ed7aafb42e7c32e4a1	2024-01-11
https://github.com/torvalds/linux/commit/1728137b33c00d5a2b5110ed7aafb42e7c32e4a1	2024-01-11

URL	Date	SRC
https://www.debian.org/security/2023/dsa-5480	2024-01-11
https://www.debian.org/security/2023/dsa-5492	2024-01-11
https://access.redhat.com/security/cve/CVE-2023-40283	2024-04-30
https://bugzilla.redhat.com/show_bug.cgi?id=2231800	2024-04-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.4.10 Search vendor "Linux" for product "Linux Kernel" and version " < 6.4.10"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				12.0 Search vendor "Debian" for product "Debian Linux" and version "12.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				22.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "22.04"		lts		Affected