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CVE-2026-98345

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

No known exploitation. EPSS puts it in the 7th percentile. Fixed versions are out.

CVSS —Not scoredEPSS percentile7th0.2% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix1 product4 fixed builds listed below

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

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  • LinuxAffected: ≥ e31a16d6f64ef0e324c6f54d5112703c3f13a9c4, < 18d5547327c202cda33ad2bbd203220c2c62c8a7Upgrade to: 18d5547327c202cda33ad2bbd203220c2c62c8a7Affected: ≥ e31a16d6f64ef0e324c6f54d5112703c3f13a9c4, < 3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734Upgrade to: 3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734Affected: ≥ e31a16d6f64ef0e324c6f54d5112703c3f13a9c4, < c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7Upgrade to: c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7Affected: ≥ e31a16d6f64ef0e324c6f54d5112703c3f13a9c4, < 12c0abd4d1c1b04a7663d04ba85268bc9ad9c017Upgrade to: 12c0abd4d1c1b04a7663d04ba85268bc9ad9c017 + 4 more branchesStated by: CVE record

Versions as the sources state them. Full version matrix after sign-in

What it is

From the CVE record

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.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS7th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.2% chance of exploitation activity in the next 30 days, which ranks it in the 7th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

2 events over 0 days, from the signal feeds we watch.

  1. Publishedrecord updated

Affected products

Sources

References in the record

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In the news

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