CVE-2022-49776

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49776
In the Linux kernel, the following vulnerability has been resolved: macvlan: enforce a consistent minimal mtu macvlan should enforce a minimal mtu of 68, even at link creation. This patch avoids the current behavior (which could lead to crashes in ipv6 stack if the link is brought up) $ ip link add macvlan1 link eno1 mtu 8 type macvlan # This should fail ! $ ip link sh dev macvlan1 5: macvlan1@eno1: <BROADCAST,MULTICAST> mtu 8 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 02:47:6c:24:74:82 brd ff:ff:ff:ff:ff:ff $ ip link set macvlan1 mtu 67 Error: mtu less than device minimum. $ ip link set macvlan1 mtu 68 $ ip link set macvlan1 mtu 8 Error: mtu less than device minimum.

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/2b055c719d8f94c15ec9b7659978133030c6a353 Patch
https://git.kernel.org/stable/c/650137a7c0b2892df2e5b0bc112d7b09a78c93c8 Patch
https://git.kernel.org/stable/c/a62aa84fe19eb24d083d600a074c009a0a66d4f3 Patch
https://git.kernel.org/stable/c/b64085b00044bdf3cd1c9825e9ef5b2e0feae91a Patch
https://git.kernel.org/stable/c/d2fee7d121d189c6dc905b727d60e7043a6655bb Patch
https://git.kernel.org/stable/c/e41cbf98df22d08402e65174d147cbb187fe1a33 Patch
https://git.kernel.org/stable/c/e929ec98c0c3b10d9c07f3776df0c1a02d7a763e 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:*:*:*:*:*:*:*:*
History

07 Nov 2025, 18:40

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/2b055c719d8f94c15ec9b7659978133030c6a353 - () https://git.kernel.org/stable/c/2b055c719d8f94c15ec9b7659978133030c6a353 - Patch
References () https://git.kernel.org/stable/c/650137a7c0b2892df2e5b0bc112d7b09a78c93c8 - () https://git.kernel.org/stable/c/650137a7c0b2892df2e5b0bc112d7b09a78c93c8 - Patch
References () https://git.kernel.org/stable/c/a62aa84fe19eb24d083d600a074c009a0a66d4f3 - () https://git.kernel.org/stable/c/a62aa84fe19eb24d083d600a074c009a0a66d4f3 - Patch
References () https://git.kernel.org/stable/c/b64085b00044bdf3cd1c9825e9ef5b2e0feae91a - () https://git.kernel.org/stable/c/b64085b00044bdf3cd1c9825e9ef5b2e0feae91a - Patch
References () https://git.kernel.org/stable/c/d2fee7d121d189c6dc905b727d60e7043a6655bb - () https://git.kernel.org/stable/c/d2fee7d121d189c6dc905b727d60e7043a6655bb - Patch
References () https://git.kernel.org/stable/c/e41cbf98df22d08402e65174d147cbb187fe1a33 - () https://git.kernel.org/stable/c/e41cbf98df22d08402e65174d147cbb187fe1a33 - Patch
References () https://git.kernel.org/stable/c/e929ec98c0c3b10d9c07f3776df0c1a02d7a763e - () https://git.kernel.org/stable/c/e929ec98c0c3b10d9c07f3776df0c1a02d7a763e - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE NVD-CWE-noinfo
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Information

Published : 2025-05-01 15:16

Updated : 2025-11-07 18:40

NVD link : CVE-2022-49776

Mitre link : CVE-2022-49776

CVE.ORG link : CVE-2022-49776

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo