CVE-2022-49776

MEDIUM EPSS 7.6%
Published May 1, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 1, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
7.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥4.10  –  <4.14.300
linuxlinux_kernel*≥4.15  –  <4.19.267
linuxlinux_kernel*≥4.20  –  <5.4.225
linuxlinux_kernel*≥5.5  –  <5.10.156
linuxlinux_kernel*≥5.11  –  <5.15.80
linuxlinux_kernel*≥5.16  –  <6.0.10

References 7

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

Remediation

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