CVE-2022-49776
Vulnerability Scoring
Analysis In Progress
CVE-2022-49776 Vulnerability Analysis & Exploit Details
CVE-2022-49776
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2022-49776 Details
Status: Awaiting Analysis
Last updated: 🕜 02 May 2025, 13:53 UTC
Originally published on: 🕒 01 May 2025, 15:16 UTC
CVSS Release:
CVE-2022-49776 Vulnerability Summary
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.
Assessing the Risk of CVE-2022-49776
Access Complexity Graph
The exploitability of CVE-2022-49776 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2022-49776
No exploitability data is available for CVE-2022-49776.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2022-49776, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2022-49776, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2022-49776 does not compromise confidentiality.
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Integrity:
None
CVE-2022-49776 does not impact data integrity.
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Availability:
None
CVE-2022-49776 does not affect system availability.
CVE-2022-49776 References
External References
- https://git.kernel.org/stable/c/2b055c719d8f94c15ec9b7659978133030c6a353
- https://git.kernel.org/stable/c/650137a7c0b2892df2e5b0bc112d7b09a78c93c8
- https://git.kernel.org/stable/c/a62aa84fe19eb24d083d600a074c009a0a66d4f3
- https://git.kernel.org/stable/c/b64085b00044bdf3cd1c9825e9ef5b2e0feae91a
- https://git.kernel.org/stable/c/d2fee7d121d189c6dc905b727d60e7043a6655bb
- https://git.kernel.org/stable/c/e41cbf98df22d08402e65174d147cbb187fe1a33
- https://git.kernel.org/stable/c/e929ec98c0c3b10d9c07f3776df0c1a02d7a763e
CWE Common Weakness Enumeration
Unknown
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