5.5

CVE-2022-49776: linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2022-49776DEBIAN-CVE-2022-49776
Published 01-05-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2022-49776 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.5% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.22%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 5
SUSE-SU-2025:01918-1SUSE-SU-2025:01966-1SUSE-SU-2025:01983-1SUSE-SU-2025:02173-1SUSE-SU-2025:02262-1

Timeline

  1. 01-05-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

+0.01 pp

From 0.21% on 22-09-2026

22-09-202622-10-2026
EPSS score
0.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu112 products
  • linux< 4.15.0-206.217 | < 5.4.0-144.161 | < 5.15.0-67.74
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.15.0-1151.164 | < 5.4.0-1097.105 | < 5.15.0-1031.35
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 91572088e3fdbf4fe31cf397926d8b890fdb3237, < d2fee7d121d189c6dc905b727d60e7043a6655bb | ≥ 91572088e3fdbf4fe31cf397926d8b890fdb3237, < 650137a7c0b2892df2e5b0bc112d7b09a78c93c8 | ≥ 91572088e3fdbf4fe31cf397926d8b890fdb3237, < a62aa84fe19eb24d083d600a074c009a0a66d4f3 | ≥ 91572088e3fdbf4fe31cf397926d8b890fdb3237, < e929ec98c0c3b10d9c07f3776df0c1a02d7a763e | ≥ 91572088e3fdbf4fe31cf397926d8b890fdb3237, < e41cbf98df22d08402e65174d147cbb187fe1a33 | ≥ 91572088e3fdbf4fe31cf397926d8b890fdb3237, < 2b055c719d8f94c15ec9b7659978133030c6a353 | ≥ 91572088e3fdbf4fe31cf397926d8b890fdb3237, < b64085b00044bdf3cd1c9825e9ef5b2e0feae91a | 4.10
  • linux_kernel≥ 4.10, < 4.14.300 | ≥ 4.15, < 4.19.267 | ≥ 4.20, < 5.4.225 | ≥ 5.5, < 5.10.156 | ≥ 5.11, < 5.15.80 | ≥ 5.16, < 6.0.10
Debian1 product
  • linux< 6.0.10-1

3 vendors · 115 products

References

11 links
Show all 11 references