5.5

CVE-2022-49776

macvlan: enforce a consistent minimal mtu

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.300
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.267
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.225
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.156
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.80
Linux ≫ Linux Kernel Version >= 5.16 < 6.0.10
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.19% 0.084
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/d2fee7d121d189c6dc905b727d60e7043a6655bb
Patch
https://git.kernel.org/stable/c/650137a7c0b2892df2e5b0bc112d7b09a78c93c8
Patch
https://git.kernel.org/stable/c/a62aa84fe19eb24d083d600a074c009a0a66d4f3
Patch
https://git.kernel.org/stable/c/e929ec98c0c3b10d9c07f3776df0c1a02d7a763e
Patch
https://git.kernel.org/stable/c/e41cbf98df22d08402e65174d147cbb187fe1a33
Patch
https://git.kernel.org/stable/c/2b055c719d8f94c15ec9b7659978133030c6a353
Patch
https://git.kernel.org/stable/c/b64085b00044bdf3cd1c9825e9ef5b2e0feae91a
Patch