Answer in brief
CVE-2026-98703 records a Unknown severity vulnerability in wifi: mac80211: minstrel_ht: validate fixed rate index. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=24f7580e852b5472b51eea322bb78454df0054b8 <f8ab6ae1fa360b0191252677f41e781dcb0ffe6e || >=24f7580e852b5472b51eea322bb78454df0054b8 <42aa9feb27b600809414a3c6b0c650bafba542a9 || >=24f7580e852b5472b51eea322bb78454df0054b8 <43082d604a9937b94ceb2e484403956d0f363324 || >=24f7580e852b5472b51eea322bb78454df0054b8 <15fb9e3cea55fbc378261ce35a32b0f8828f0000 | f8ab6ae1fa360b0191252677f41e781dcb0ffe6e, 42aa9feb27b600809414a3c6b0c650bafba542a9, 43082d604a9937b94ceb2e484403956d0f363324, 15fb9e3cea55fbc378261ce35a32b0f8828f0000 |
| Linux/Linuxgeneric | 3.1 | Not reported |
| Linux/Linuxgeneric | >=24f7580e852b5472b51eea322bb78454df0054b8 <eebc70f132041b35da9ec74d5d395083125289b2 || >=24f7580e852b5472b51eea322bb78454df0054b8 <f8ab6ae1fa360b0191252677f41e781dcb0ffe6e || >=24f7580e852b5472b51eea322bb78454df0054b8 <42aa9feb27b600809414a3c6b0c650bafba542a9 || >=24f7580e852b5472b51eea322bb78454df0054b8 <43082d604a9937b94ceb2e484403956d0f363324 || >=24f7580e852b5472b51eea322bb78454df0054b8 <15fb9e3cea55fbc378261ce35a32b0f8828f0000 | eebc70f132041b35da9ec74d5d395083125289b2, f8ab6ae1fa360b0191252677f41e781dcb0ffe6e, 42aa9feb27b600809414a3c6b0c650bafba542a9, 43082d604a9937b94ceb2e484403956d0f363324, 15fb9e3cea55fbc378261ce35a32b0f8828f0000 |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: minstrel_ht: validate fixed rate index The fixed_rate_idx debugfs file is a plain u32 attribute, so any value can be written to it. minstrel_ht_update_stats() then copies the value into mi->max_tp_rate[] and mi->max_prob_rate, and minstrel_ht_set_rate() uses MI_RATE_GROUP()/MI_RATE_IDX() to index minstrel_mcs_groups[] (42 entries) and mi->groups[].rates[] (10 entries) with it. Writing e.g. 65535 selects group 4095 and rate index 15, far outside both arrays. The out-of-bounds entries are dereferenced and updated as struct minstrel_rate_stats (retry counts, etc.), so the invalid index corrupts adjacent kernel memory. With CONFIG_UBSAN_BOUNDS the access is reported as an array-index-out-of-bounds in minstrel_ht_set_rate(). Only a valid group/rate pair, or U32_MAX to disable fixed rate processing, can be used safely, so reject any other value when the debugfs file is written. The file is only reachable through a root-only debugfs mount, so this is not a privilege boundary. The out-of-bounds access is still a bug that must not be reachable through a writable debugfs attribute.
Quoted source text, attributed separately from HOL analysis.