What’s Vulnerable › Vulnerabilities

CVE-2024-42281: bpf: Fix a segment issue when downgrading gso_size

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-17 · updated 2026-10-15

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix a segment issue when downgrading gso_size Linearize the skb when downgrading gso_size because it may trigger a BUG_ON() later when the skb is segmented as described in [1,2].

Affected products

• Linux kernel: from 4.13 before 5.4.282; from 5.5 before 5.10.224; from 5.11 before 5.15.165; from 5.16 before 6.1.103; from 6.2 before 6.6.44; from 6.7 before 6.10.3 — fixed in 5.10.224, 5.15.165, 5.4.282, 6.1.103, 6.10.3, 6.6.44

How to fix

Upgrade to a fixed version: Linux kernel 5.10.224, 5.15.165, 5.4.282, 6.1.103. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/11ec79f5c7f74261874744039bc1551023edd6b2
• https://git.kernel.org/stable/c/a689f5eb13a90f892a088865478b3cd39f53d5dc
• https://git.kernel.org/stable/c/c3496314c53e7e82ddb544c825defc3e8c0e45cf
• https://git.kernel.org/stable/c/dda518dea60d556a2d171c0122ca7d9fdb7d473a
• https://git.kernel.org/stable/c/ec4eea14d75f7b0491194dd413f540dd19b8c733
• https://git.kernel.org/stable/c/f6bb8c90cab97a3e03f8d30e3069efe6a742e0be
• https://git.kernel.org/stable/c/fa5ef655615a01533035c6139248c5b33aa27028
• https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
• https://cert-portal.siemens.com/productcert/html/ssa-265688.html

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