Amazon Linux 2023: CVE-2024-41091: Important priority package update for kernel

Amazon Linux 2023: CVE-2024-41091: Important priority package update for kernel

Severity

5

CVSS

(AV:L/AC:L/Au:N/C:N/I:N/A:C)

Published

07/24/2024

Created

02/14/2025

Added

02/14/2025

Modified

02/14/2025

Description

In the Linux kernel, the following vulnerability has been resolved: tun: add missing verification for short frame The cited commit missed to check against the validity of the frame length in the tun_xdp_one() path, which could cause a corrupted skb to be sent downstack. Even before the skb is transmitted, the tun_xdp_one-->eth_type_trans() may access the Ethernet header although it can be less than ETH_HLEN. Once transmitted, this could either cause out-of-bound access beyond the actual length, or confuse the underlayer with incorrect or inconsistent header length in the skb metadata. In the alternative path, tun_get_user() already prohibits short frame which has the length less than Ethernet header size from being transmitted for IFF_TAP. This is to drop any frame shorter than the Ethernet header size just like how tun_get_user() does. CVE: CVE-2024-41091 A denial of service (DoS) attack was found in the mlx5 driver in the Linux kernel. A KVM guest VM using virtio-net can crash the host by sending a short packet, for example, size < ETH_HLEN. The packet may traverse through vhost-net, macvtap, and vlan without any validation or drop. When this packet is presented to the mlx5 driver on the host side, the kernel panic happens since mlx5_core assumes the frame size is always >= ETH_HLEN.

Solution(s)

• amazon-linux-2023-upgrade-bpftool
• amazon-linux-2023-upgrade-bpftool-debuginfo
• amazon-linux-2023-upgrade-kernel
• amazon-linux-2023-upgrade-kernel-debuginfo
• amazon-linux-2023-upgrade-kernel-debuginfo-common-aarch64
• amazon-linux-2023-upgrade-kernel-debuginfo-common-x86-64
• amazon-linux-2023-upgrade-kernel-devel
• amazon-linux-2023-upgrade-kernel-headers
• amazon-linux-2023-upgrade-kernel-libbpf
• amazon-linux-2023-upgrade-kernel-libbpf-devel
• amazon-linux-2023-upgrade-kernel-libbpf-static
• amazon-linux-2023-upgrade-kernel-livepatch-6-1-102-108-177
• amazon-linux-2023-upgrade-kernel-modules-extra
• amazon-linux-2023-upgrade-kernel-modules-extra-common
• amazon-linux-2023-upgrade-kernel-tools
• amazon-linux-2023-upgrade-kernel-tools-debuginfo
• amazon-linux-2023-upgrade-kernel-tools-devel
• amazon-linux-2023-upgrade-perf
• amazon-linux-2023-upgrade-perf-debuginfo
• amazon-linux-2023-upgrade-python3-perf
• amazon-linux-2023-upgrade-python3-perf-debuginfo

References

• https://attackerkb.com/topics/cve-2024-41091
• CVE - 2024-41091
• https://alas.aws.amazon.com/AL2023/ALAS-2024-679.html