Advisory Published

F5-K000148830

First published: Tue Dec 03 2024(Updated: )

CVE-2024-41090 In the Linux kernel, the following vulnerability has been resolved: tap: add missing verification for short frame The cited commit missed to check against the validity of the frame length in the tap_get_user_xdp() path, which could cause a corrupted skb to be sent downstack. Even before the skb is transmitted, the tap_get_user_xdp()-->skb_set_network_header() may assume the size is more 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, tap_get_user() already prohibits short frame which has the length less than Ethernet header size from being transmitted. This is to drop any frame shorter than the Ethernet header size just like how tap_get_user() does. CVE: CVE-2024-41090 CVE-2024-41091 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

Affected SoftwareAffected VersionHow to fix
F5 BIG-IP Next=20.2.1
20.3.0
F5 BIG-IP Next Central Manager=20.2.1
20.3.0
F5 Traffix Systems Signaling Delivery Controller=5.2.0

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Frequently Asked Questions

  • What is the severity of F5-K000148830?

    F5-K000148830 describes a vulnerability with a medium severity level in the Linux kernel affecting certain F5 products.

  • How do I fix F5-K000148830?

    To fix F5-K000148830, you should upgrade your software to version 20.3.0 or later as specified in the advisory.

  • Which products are affected by F5-K000148830?

    F5-K000148830 affects F5 BIG-IP Next, F5 BIG-IP Next Central Manager, and F5 Traffix Systems Signaling Delivery Controller depending on the version.

  • What platforms does F5-K000148830 impact?

    F5-K000148830 impacts systems running specific versions of the F5 BIG-IP and Traffix SDC software due to a Linux kernel vulnerability.

  • Is there a workaround for F5-K000148830?

    As of now, the recommended mitigation for F5-K000148830 is to apply the available software updates.

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