CVE - CVE-2022-49776

CVE-ID
CVE-2022-49776	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/2b055c719d8f94c15ec9b7659978133030c6a353 URL:https://git.kernel.org/stable/c/2b055c719d8f94c15ec9b7659978133030c6a353 MISC:https://git.kernel.org/stable/c/650137a7c0b2892df2e5b0bc112d7b09a78c93c8 URL:https://git.kernel.org/stable/c/650137a7c0b2892df2e5b0bc112d7b09a78c93c8 MISC:https://git.kernel.org/stable/c/a62aa84fe19eb24d083d600a074c009a0a66d4f3 URL:https://git.kernel.org/stable/c/a62aa84fe19eb24d083d600a074c009a0a66d4f3 MISC:https://git.kernel.org/stable/c/b64085b00044bdf3cd1c9825e9ef5b2e0feae91a URL:https://git.kernel.org/stable/c/b64085b00044bdf3cd1c9825e9ef5b2e0feae91a MISC:https://git.kernel.org/stable/c/d2fee7d121d189c6dc905b727d60e7043a6655bb URL:https://git.kernel.org/stable/c/d2fee7d121d189c6dc905b727d60e7043a6655bb MISC:https://git.kernel.org/stable/c/e41cbf98df22d08402e65174d147cbb187fe1a33 URL:https://git.kernel.org/stable/c/e41cbf98df22d08402e65174d147cbb187fe1a33 MISC:https://git.kernel.org/stable/c/e929ec98c0c3b10d9c07f3776df0c1a02d7a763e URL:https://git.kernel.org/stable/c/e929ec98c0c3b10d9c07f3776df0c1a02d7a763e
Assigning CNA
kernel.org
Date Record Created
20250416	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250416)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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