Red Hat: CVE-2024-41091: kernel: virtio-net: tun: mlx5_core short frame denial of service (Multiple Advisories)

Red Hat: CVE-2024-41091: kernel: virtio-net: tun: mlx5_core short frame denial of service (Multiple Advisories)

Severity

5

CVSS

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

Published

07/29/2024

Created

09/07/2024

Added

09/06/2024

Modified

12/05/2024

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

Solution(s)

• redhat-upgrade-kernel
• redhat-upgrade-kernel-rt

References

• CVE-2024-41091
• RHSA-2024:5672
• RHSA-2024:5673
• RHSA-2024:5928
• RHSA-2024:6206
• RHSA-2024:6242
• RHSA-2024:6313
• RHSA-2024:6560
• RHSA-2024:7000
• RHSA-2024:7001
• RHSA-2024:7429

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