vulnerability
SUSE: CVE-2021-47293: SUSE Linux Security Advisory
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:L/Au:N/C:C/I:C/A:N) | 05/21/2024 | 08/09/2024 | 02/18/2025 |
Severity
9
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:N)
Published
05/21/2024
Added
08/09/2024
Modified
02/18/2025
Description
In the Linux kernel, the following vulnerability has been resolved:
net/sched: act_skbmod: Skip non-Ethernet packets
Currently tcf_skbmod_act() assumes that packets use Ethernet as their L2
protocol, which is not always the case. As an example, for CAN devices:
$ ip link add dev vcan0 type vcan
$ ip link set up vcan0
$ tc qdisc add dev vcan0 root handle 1: htb
$ tc filter add dev vcan0 parent 1: protocol ip prio 10 \
matchall action skbmod swap mac
Doing the above silently corrupts all the packets. Do not perform skbmod
actions for non-Ethernet packets.
Solution(s)
suse-upgrade-kernel-azuresuse-upgrade-kernel-azure-basesuse-upgrade-kernel-azure-develsuse-upgrade-kernel-defaultsuse-upgrade-kernel-default-basesuse-upgrade-kernel-default-develsuse-upgrade-kernel-default-extrasuse-upgrade-kernel-default-mansuse-upgrade-kernel-develsuse-upgrade-kernel-devel-azuresuse-upgrade-kernel-docssuse-upgrade-kernel-macrossuse-upgrade-kernel-obs-buildsuse-upgrade-kernel-sourcesuse-upgrade-kernel-source-azuresuse-upgrade-kernel-symssuse-upgrade-kernel-syms-azure
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