high
7
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2024-41091: tun: add missing verification for short frame

First published: Mon Jul 22 2024(Updated: )

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 (i.e. size &lt; ETH_HLEN). The packet may traverse through vhost-net, macvtap and vlan without any validation/drop. When this packet is presented to mlx5 driver on the host side, the kernel panic happens since mlx5_core assumes the frame size is always &gt;= ETH_HLEN. This vulnerability affects both drivers/net/tun.c and drivers/net/tap.c. <a href="https://access.redhat.com/security/cve/CVE-2024-41091">CVE-2024-41091</a> has been assigned to the TUN side of the issue. Reference: <a href="https://www.openwall.com/lists/oss-security/2024/07/24/4">https://www.openwall.com/lists/oss-security/2024/07/24/4</a>

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected SoftwareAffected VersionHow to fix
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.15-1
debian/linux-6.1
6.1.128-1~deb11u1
F5 BIG-IP Next (LTM)=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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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2024-41091?

    CVE-2024-41091 is classified as a denial-of-service (DoS) vulnerability.

  • How do I fix CVE-2024-41091?

    To mitigate CVE-2024-41091, update to the specified remedial versions of the affected software.

  • Which products are affected by CVE-2024-41091?

    CVE-2024-41091 affects F5 BIG-IP Next, F5 BIG-IP Next Central Manager, F5 Traffix Systems Signaling Delivery Controller, and certain versions of the Linux kernel.

  • What causes CVE-2024-41091?

    CVE-2024-41091 is caused by a KVM guest VM sending a malformed short packet that crashes the host machine.

  • Is there a known workaround for CVE-2024-41091?

    Currently, updating to the fixed versions is the recommended method for addressing CVE-2024-41091.

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