CVE-2022-49727

ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg

Severity Score

7.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

MITRE
TN

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg When len >= INT_MAX - transhdrlen, ulen = len + transhdrlen will be
overflow. To fix, we can follow what udpv6 does and subtract the
transhdrlen from the max.

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg When len >= INT_MAX - transhdrlen, ulen = len + transhdrlen will be overflow. To fix, we can follow what udpv6 does and subtract the transhdrlen from the max.

*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

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2025-02-26 CVE Reserved
2025-02-26 CVE Published
2025-02-26 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (8)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/2cf73c7cb6125083408d77f43d0e84d86aed0000	2022-06-25
https://git.kernel.org/stable/c/0e818d433fc2718fe4da044ffca7431812a7e04e	2022-06-25
https://git.kernel.org/stable/c/6c4e3486d21173d60925ef52e512cae727b43d30	2022-06-25
https://git.kernel.org/stable/c/2f42389d270f2304c8855b0b63498a5a4d0c053d	2022-06-22
https://git.kernel.org/stable/c/b8879ca1fd7348b4d5db7db86dcb97f60c73d751	2022-06-22
https://git.kernel.org/stable/c/27a37755ceb401111ded76810359d3adc4b268a1	2022-06-22
https://git.kernel.org/stable/c/034246122f5c5e2e2a0b9fe04e24517920e9beb1	2022-06-22
https://git.kernel.org/stable/c/f638a84afef3dfe10554c51820c16e39a278c915	2022-06-08

URL	Date	SRC

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"				< 4.9.320 Search vendor "Linux" for product "Linux Kernel" and version " < 4.9.320"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.14.285 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.285"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.19.249 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.249"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.200 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.200"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.124 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.124"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.49 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.49"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.18.6 Search vendor "Linux" for product "Linux Kernel" and version " < 5.18.6"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.19 Search vendor "Linux" for product "Linux Kernel" and version " < 5.19"		en		Affected