CVE-2022-49727

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49727
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/034246122f5c5e2e2a0b9fe04e24517920e9beb1 Patch
https://git.kernel.org/stable/c/0e818d433fc2718fe4da044ffca7431812a7e04e Patch
https://git.kernel.org/stable/c/27a37755ceb401111ded76810359d3adc4b268a1 Patch
https://git.kernel.org/stable/c/2cf73c7cb6125083408d77f43d0e84d86aed0000 Patch
https://git.kernel.org/stable/c/2f42389d270f2304c8855b0b63498a5a4d0c053d Patch
https://git.kernel.org/stable/c/6c4e3486d21173d60925ef52e512cae727b43d30 Patch
https://git.kernel.org/stable/c/b8879ca1fd7348b4d5db7db86dcb97f60c73d751 Patch
https://git.kernel.org/stable/c/f638a84afef3dfe10554c51820c16e39a278c915 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
History

07 Mar 2025, 20:44

Type Values Removed Values Added
CWE CWE-190
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv6: Se solucionó el desbordamiento de entero con signo en l2tp_ip6_sendmsg Cuando len >= INT_MAX - transhdrlen, ulen = len + transhdrlen se desbordará. Para solucionarlo, podemos seguir lo que hace udpv6 y restar transhdrlen del máximo.
References () https://git.kernel.org/stable/c/034246122f5c5e2e2a0b9fe04e24517920e9beb1 - () https://git.kernel.org/stable/c/034246122f5c5e2e2a0b9fe04e24517920e9beb1 - Patch
References () https://git.kernel.org/stable/c/0e818d433fc2718fe4da044ffca7431812a7e04e - () https://git.kernel.org/stable/c/0e818d433fc2718fe4da044ffca7431812a7e04e - Patch
References () https://git.kernel.org/stable/c/27a37755ceb401111ded76810359d3adc4b268a1 - () https://git.kernel.org/stable/c/27a37755ceb401111ded76810359d3adc4b268a1 - Patch
References () https://git.kernel.org/stable/c/2cf73c7cb6125083408d77f43d0e84d86aed0000 - () https://git.kernel.org/stable/c/2cf73c7cb6125083408d77f43d0e84d86aed0000 - Patch
References () https://git.kernel.org/stable/c/2f42389d270f2304c8855b0b63498a5a4d0c053d - () https://git.kernel.org/stable/c/2f42389d270f2304c8855b0b63498a5a4d0c053d - Patch
References () https://git.kernel.org/stable/c/6c4e3486d21173d60925ef52e512cae727b43d30 - () https://git.kernel.org/stable/c/6c4e3486d21173d60925ef52e512cae727b43d30 - Patch
References () https://git.kernel.org/stable/c/b8879ca1fd7348b4d5db7db86dcb97f60c73d751 - () https://git.kernel.org/stable/c/b8879ca1fd7348b4d5db7db86dcb97f60c73d751 - Patch
References () https://git.kernel.org/stable/c/f638a84afef3dfe10554c51820c16e39a278c915 - () https://git.kernel.org/stable/c/f638a84afef3dfe10554c51820c16e39a278c915 - Patch
First Time Linux
Linux linux Kernel

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-03-07 20:44

NVD link : CVE-2022-49727

Mitre link : CVE-2022-49727

CVE.ORG link : CVE-2022-49727

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-190

Integer Overflow or Wraparound