CVE-2022-49776
published 2025-05-01CVE-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…
PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.21%
10.9th percentile
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: 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.
Affected
19 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.10-1 (bookworm) | linux 6.0.10-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 91572088e3fdbf4fe31cf397926d8b890fdb3237 < d2fee7d121d189c6dc905b727d60e7043a6655bb | d2fee7d121d189c6dc905b727d60e7043a6655bb |
| linux | linux | >= 91572088e3fdbf4fe31cf397926d8b890fdb3237 < 650137a7c0b2892df2e5b0bc112d7b09a78c93c8 | 650137a7c0b2892df2e5b0bc112d7b09a78c93c8 |
| linux | linux | >= 91572088e3fdbf4fe31cf397926d8b890fdb3237 < a62aa84fe19eb24d083d600a074c009a0a66d4f3 | a62aa84fe19eb24d083d600a074c009a0a66d4f3 |
| linux | linux | >= 91572088e3fdbf4fe31cf397926d8b890fdb3237 < e929ec98c0c3b10d9c07f3776df0c1a02d7a763e | e929ec98c0c3b10d9c07f3776df0c1a02d7a763e |
| linux | linux | >= 91572088e3fdbf4fe31cf397926d8b890fdb3237 < e41cbf98df22d08402e65174d147cbb187fe1a33 | e41cbf98df22d08402e65174d147cbb187fe1a33 |
| linux | linux | >= 91572088e3fdbf4fe31cf397926d8b890fdb3237 < 2b055c719d8f94c15ec9b7659978133030c6a353 | 2b055c719d8f94c15ec9b7659978133030c6a353 |
| linux | linux | >= 91572088e3fdbf4fe31cf397926d8b890fdb3237 < b64085b00044bdf3cd1c9825e9ef5b2e0feae91a | b64085b00044bdf3cd1c9825e9ef5b2e0feae91a |
| linux | linux_kernel | >= 0 < 5.10.158-1 | 5.10.158-1 |
| linux | linux_kernel | >= 0 < 6.0.10-1 | 6.0.10-1 |
| linux | linux_kernel | >= 0 < 6.0.10-1 | 6.0.10-1 |
| linux | linux_kernel | >= 0 < 6.0.10-1 | 6.0.10-1 |
| linux | linux_kernel | >= 4.10 < 4.14.300 | 4.14.300 |
| linux | linux_kernel | >= 4.15 < 4.19.267 | 4.19.267 |
| linux | linux_kernel | >= 4.20 < 5.4.225 | 5.4.225 |
| linux | linux_kernel | >= 5.11 < 5.15.80 | 5.15.80 |
| linux | linux_kernel | >= 5.16 < 6.0.10 | 6.0.10 |
| linux | linux_kernel | >= 5.5 < 5.10.156 | 5.10.156 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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GHSA
GHSA-gpc4-vc7c-37hj: In the Linux kernel, the following vulnerability has been resolved:
macvlan: enforce a consistent minimal mtu
macvlan should enforce a minimal mtu o
ghsa_unreviewed·2025-05-01
CVE-2022-49776 [MEDIUM] GHSA-gpc4-vc7c-37hj: In the Linux kernel, the following vulnerability has been resolved:
macvlan: enforce a consistent minimal mtu
macvlan should enforce a minimal mtu o
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: 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.
OSV
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
osv·2025-05-01·CVSS 5.5
CVE-2022-49776 [MEDIUM] 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
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: 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.
Red Hat
kernel: macvlan: enforce a consistent minimal mtu
vendor_redhat·2025-05-01·CVSS 5.5
CVE-2022-49776 [MEDIUM] kernel: macvlan: enforce a consistent minimal mtu
kernel: 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: 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.
Statement: A flaw in the macvlan driver allowed creation of interf
Debian
CVE-2022-49776: linux - In the Linux kernel, the following vulnerability has been resolved: macvlan: en...
vendor_debian·2022·CVSS 5.5
CVE-2022-49776 [MEDIUM] CVE-2022-49776: linux - In the Linux kernel, the following vulnerability has been resolved: macvlan: en...
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: 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.
Scope: local
bookworm: resolved (fixed in 6.0.10-1)
bullseye: resolved (fixed in 5.10.158-1)
forky: resolved (fixed in
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/2b055c719d8f94c15ec9b7659978133030c6a353https://git.kernel.org/stable/c/650137a7c0b2892df2e5b0bc112d7b09a78c93c8https://git.kernel.org/stable/c/a62aa84fe19eb24d083d600a074c009a0a66d4f3https://git.kernel.org/stable/c/b64085b00044bdf3cd1c9825e9ef5b2e0feae91ahttps://git.kernel.org/stable/c/d2fee7d121d189c6dc905b727d60e7043a6655bbhttps://git.kernel.org/stable/c/e41cbf98df22d08402e65174d147cbb187fe1a33https://git.kernel.org/stable/c/e929ec98c0c3b10d9c07f3776df0c1a02d7a763e
2025-05-01
Published