Answer in brief
CVE-2022-49776 records a Medium severity (CVSS 5.5) vulnerability in macvlan: enforce a consistent minimal mtu. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=91572088e3fdbf4fe31cf397926d8b890fdb3237 <d2fee7d121d189c6dc905b727d60e7043a6655bb || >=91572088e3fdbf4fe31cf397926d8b890fdb3237 <650137a7c0b2892df2e5b0bc112d7b09a78c93c8 || >=91572088e3fdbf4fe31cf397926d8b890fdb3237 <a62aa84fe19eb24d083d600a074c009a0a66d4f3 || >=91572088e3fdbf4fe31cf397926d8b890fdb3237 <e929ec98c0c3b10d9c07f3776df0c1a02d7a763e || >=91572088e3fdbf4fe31cf397926d8b890fdb3237 <e41cbf98df22d08402e65174d147cbb187fe1a33 || >=91572088e3fdbf4fe31cf397926d8b890fdb3237 <2b055c719d8f94c15ec9b7659978133030c6a353 || >=91572088e3fdbf4fe31cf397926d8b890fdb3237 <b64085b00044bdf3cd1c9825e9ef5b2e0feae91a | d2fee7d121d189c6dc905b727d60e7043a6655bb, 650137a7c0b2892df2e5b0bc112d7b09a78c93c8, a62aa84fe19eb24d083d600a074c009a0a66d4f3, e929ec98c0c3b10d9c07f3776df0c1a02d7a763e, e41cbf98df22d08402e65174d147cbb187fe1a33, 2b055c719d8f94c15ec9b7659978133030c6a353, b64085b00044bdf3cd1c9825e9ef5b2e0feae91a |
| Linux/Linuxgeneric | 4.10 | Not reported |
Published upstream
May 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.