CVE-2026-98345wifi: cfg80211: check IP header size in cfg80211_classify8021d()
Updated under an hour ago ()
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It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 before 18d5547327c202cda33ad2bbd203220c2c62c8a7; from e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 before 3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734; from e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 before c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7; from e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 before 12c0abd4d1c1b04a7663d04ba85268bc9ad9c017; from e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 before f33ad4e2f846e55cf4637419268f093ac9f1a765; from e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 before a2cdb4a675ca04c4ac8cc962848082d8ce065008; from e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 before 65893c8d28f239c7ddad5a83683be193a9133e9b; from e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 before 48b2c5c628b09cf36cbeca53e0432fc2a7518be7 | CNA record |
References
- https://git.kernel.org/stable/c/18d5547327c202cda33ad2bbd203220c2c62c8a7
- https://git.kernel.org/stable/c/3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734
- https://git.kernel.org/stable/c/c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7
- https://git.kernel.org/stable/c/12c0abd4d1c1b04a7663d04ba85268bc9ad9c017
- https://git.kernel.org/stable/c/f33ad4e2f846e55cf4637419268f093ac9f1a765
- https://git.kernel.org/stable/c/a2cdb4a675ca04c4ac8cc962848082d8ce065008
- https://git.kernel.org/stable/c/65893c8d28f239c7ddad5a83683be193a9133e9b
- https://git.kernel.org/stable/c/48b2c5c628b09cf36cbeca53e0432fc2a7518be7
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.