Answer in brief
CVE-2026-93784 records a Unknown severity vulnerability in wifi: cfg80211: validate IEs in cfg80211_wext_siwgenie(). The current sources do not mark it as known exploited. The current feed maps 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c970879e03b23a27df42caf7ba506485a165fb96 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <01cc395cecfaa73134d39fb9a401d9605d8bb2c5 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a2f5286ca4f304d3fd469f01b96b518608912a5c || >=0 <6.12.111 || >=0 <6.18.53 | c970879e03b23a27df42caf7ba506485a165fb96, 01cc395cecfaa73134d39fb9a401d9605d8bb2c5, a2f5286ca4f304d3fd469f01b96b518608912a5c, 6.12.111, 6.18.53 |
Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 25, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: validate IEs in cfg80211_wext_siwgenie() The KASAN allocation trace shows that a malformed IE buffer is stored via SIOCSIWGENIE (cfg80211_wext_siwgenie()) without any validation. The crash trace shows that a subsequent SIOCSIWESSID triggers a connection attempt which calls cfg80211_sme_get_conn_ies() to process the stored IE buffer, causing: - An out-of-bounds read in skip_ie() which reads ies[pos+1] (the length byte) past the end of the 1-byte buffer. - An integer underflow in the memcpy size argument when offs returned by ieee80211_ie_split() exceeds ies_len, causing unsigned subtraction to wrap to SIZE_MAX and triggering a fortify panic. Fix this by validating the IE buffer in cfg80211_wext_siwgenie() before storing it. [drop unnecessary ie_len check, update commit message]
Quoted source text, attributed separately from HOL analysis.