CVE-2022-49776
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2025-05-01
Modified: 2026-11-05
First seen: 2026-11-05
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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.
Affected Software (9)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 91572088e3fdbf4fe31cf397926d8b890fdb3237 < d2fee7d121d189c6dc905b727d60e7043a6655bb |
| Linux | Linux | 91572088e3fdbf4fe31cf397926d8b890fdb3237 < 650137a7c0b2892df2e5b0bc112d7b09a78c93c8 |
| Linux | Linux | 91572088e3fdbf4fe31cf397926d8b890fdb3237 < a62aa84fe19eb24d083d600a074c009a0a66d4f3 |
| Linux | Linux | 91572088e3fdbf4fe31cf397926d8b890fdb3237 < e929ec98c0c3b10d9c07f3776df0c1a02d7a763e |
| Linux | Linux | 91572088e3fdbf4fe31cf397926d8b890fdb3237 < e41cbf98df22d08402e65174d147cbb187fe1a33 |
| Linux | Linux | 91572088e3fdbf4fe31cf397926d8b890fdb3237 < 2b055c719d8f94c15ec9b7659978133030c6a353 |
| Linux | Linux | 91572088e3fdbf4fe31cf397926d8b890fdb3237 < b64085b00044bdf3cd1c9825e9ef5b2e0feae91a |
| Linux | Linux | 4.10 |
| linux | linux_kernel | 4.10 – 4.14.300 |