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CVE-2026-98345

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: check IP header size in cfg80211_classify8021d() A frame that looks like IP can be transmitted, but be too shor…

Published Oct 6, 2026EPSS 0.18%

Overview

CVE-2026-98345 is a known-severity vulnerability. It was published on October 6, 2026.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

wifi: cfg80211: check IP header size in cfg80211_classify8021d()

A frame that looks like IP can be transmitted, but be too short, so

the DS field is read incorrectly:

BUG: KMSAN: uninit-value in cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027

cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027

ieee80211_select_queue+0x37a/0x9e0 net/mac80211/wme.c:180

__ieee80211_subif_start_xmit+0x60f/0x1d90 net/mac80211/tx.c:4304

ieee80211_subif_start_xmit+0xa8/0x6d0 net/mac80211/tx.c:4538

...

packet_sendmsg+0x9173/0xa2a0 net/packet/af_packet.c:3108

Use skb_header_pointer() like the MPLS case.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Frequently asked questions

What is CVE-2026-98345?

CVE-2026-98345 is a known-severity vulnerability. It was published on October 6, 2026.

How severe is CVE-2026-98345?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-98345?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-98345?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-98345 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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