CVE-2022-42720

kernel: use-after-free in bss_ref_get in net/wireless/scan.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

Various refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to trigger use-after-free conditions to potentially execute code.

Varios errores de recuento en el manejo de multi-BSS en la pila mac80211 en el kernel de Linux versiones 5.1 hasta 5.19.14, podrían ser usados por atacantes locales (capaces de inyectar tramas WLAN) para desencadenar condiciones de uso de memoria previamente liberada para potencialmente ejecutar código

A use-after-free flaw was found in bss_ref_get in the net/wireless/scan.c in the Linux kernel. This issue can lead to a denial of service or arbitrary code execution.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-10-10 CVE Reserved
2022-10-13 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free

CAPEC

References (12)

URL	Tag	Source
http://packetstormsecurity.com/files/169951/Kernel-Live-Patch-Security-Notice-LSN-0090-1.html	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html	Mailing List
https://security.netapp.com/advisory/ntap-20230203-0008	Third Party Advisory

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2022/10/13/5	2024-08-03

URL	Date	SRC
https://bugzilla.suse.com/show_bug.cgi?id=1204059	2023-11-07
https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git/commit/?id=0b7808818cb9df6680f98996b8e9a439fa7bcc2f	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR	2023-11-07
https://www.debian.org/security/2022/dsa-5257	2023-11-07
https://access.redhat.com/security/cve/CVE-2022-42720	2024-03-06
https://bugzilla.redhat.com/show_bug.cgi?id=2134451	2024-03-06

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"				>= 5.1 < 5.4.218 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.1 < 5.4.218"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.5 < 5.10.148 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.10.148"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.11 < 5.15.74 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.15.74"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.16 < 5.19.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.16 < 5.19.16"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.0 < 6.0.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.0 < 6.0.2"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				36 Search vendor "Fedoraproject" for product "Fedora" and version "36"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				37 Search vendor "Fedoraproject" for product "Fedora" and version "37"		-		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