CVE Database›Document archive›CVE-2024-49979

CVE-2024-49979

kernel: net: gso: fix tcp fraglist segmentation after pull from frag_list

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · October 21, 2024

Updated · September 14, 2026

Description

A flaw was found in the Linux kernel's Generic Segmentation Offload (GSO) feature, specifically in how it handles TCP (Transmission Control Protocol) fraglist segmentation. When certain network operations, such as Network Address Translation (NAT) or BPF (Berkeley Packet Filter) programs, modify network packets, they can corrupt the expected structure of these packets. This corruption can lead to a null pointer dereference, which is a critical error that can cause the system to crash or become unresponsive, effectively creating a Denial of Service (DoS) condition for network traffic.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference