Answer in brief
CVE-2026-98183 records a Unknown severity vulnerability in wifi: mac80211: avoid out-of-bounds read for empty PREQ elements. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae <3beddbd56946577478fd5e649f556aaaebe15b0a || >=8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae <e6031f02269c0f51cf67886d177f02bc300b47cd | 3beddbd56946577478fd5e649f556aaaebe15b0a, e6031f02269c0f51cf67886d177f02bc300b47cd |
| Linux/Linuxgeneric | 7.2 | Not reported |
Published upstream
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 6, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: avoid out-of-bounds read for empty PREQ elements ieee80211_mesh_preq_size_ok() derives the location of the PREQ bottom fields before checking whether the element contains even the fixed header. ieee80211_mesh_hwmp_preq_get_bottom() reads the flags byte to account for the optional Address Extension field. Consequently, an empty PREQ element causes a one-byte read beyond its declared payload. Move the helper call after both size checks, so the bottom fields are only accessed when they are present.
Quoted source text, attributed separately from HOL analysis.