wifi: cfg80211: check IP header size in cfg80211_classify8021d()
Summary
| CVE | CVE-2026-98345 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-06 09:18:27 UTC |
| Updated | 2026-10-19 10:18:36 UTC |
| 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. |
Risk And Classification
EPSS: 0.001840000 probability, percentile 0.072960000 (date 2026-10-06)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 18d5547327c202cda33ad2bbd203220c2c62c8a7 git | Not specified |
| CNA | Linux | Linux | affected e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734 git | Not specified |
| CNA | Linux | Linux | affected e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7 git | Not specified |
| CNA | Linux | Linux | affected e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 12c0abd4d1c1b04a7663d04ba85268bc9ad9c017 git | Not specified |
| CNA | Linux | Linux | affected e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 f33ad4e2f846e55cf4637419268f093ac9f1a765 git | Not specified |
| CNA | Linux | Linux | affected e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 a2cdb4a675ca04c4ac8cc962848082d8ce065008 git | Not specified |
| CNA | Linux | Linux | affected e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 65893c8d28f239c7ddad5a83683be193a9133e9b git | Not specified |
| CNA | Linux | Linux | affected e31a16d6f64ef0e324c6f54d5112703c3f13a9c4 48b2c5c628b09cf36cbeca53e0432fc2a7518be7 git | Not specified |
| CNA | Linux | Linux | affected 2.6.31 | Not specified |
| CNA | Linux | Linux | unaffected 2.6.31 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.271 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.222 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.189 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.158 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.112 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.54 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2.8 7.2.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.3 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/12c0abd4d1c1b04a7663d04ba85268bc9ad9c017 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/48b2c5c628b09cf36cbeca53e0432fc2a7518be7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f33ad4e2f846e55cf4637419268f093ac9f1a765 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/65893c8d28f239c7ddad5a83683be193a9133e9b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/18d5547327c202cda33ad2bbd203220c2c62c8a7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a2cdb4a675ca04c4ac8cc962848082d8ce065008 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.