Answer in brief
CVE-2026-98186 records a Unknown severity vulnerability in wifi: mwifiex: bound the pairwise-cipher OUI walk to the IE length. 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 | >=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <77e642af7f2f6029e12a35c847c56cbd0466e799 || >=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <982b8fcdbb28f63bbbf02f0822c0bbda12ec27ed || >=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <58767b41f87244eebaa5a475b9d276c83b89b933 || >=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <2402c9e2644b7e10c7aaaf87bf12743d7e363559 || >=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <54a9cc5bd70b0d77a5069d4c46998c679a10c857 || >=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <8bbef2b1ebfbadc0b9c37bbbf9c9e26fe2e41960 || >=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <46cda9d42f0d6ec3057d878ddb1f38c0ab9f51df || >=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <e667aee1c192d67d27c803007bfa9c6e0873e959 | 77e642af7f2f6029e12a35c847c56cbd0466e799, 982b8fcdbb28f63bbbf02f0822c0bbda12ec27ed, 58767b41f87244eebaa5a475b9d276c83b89b933, 2402c9e2644b7e10c7aaaf87bf12743d7e363559, 54a9cc5bd70b0d77a5069d4c46998c679a10c857, 8bbef2b1ebfbadc0b9c37bbbf9c9e26fe2e41960, 46cda9d42f0d6ec3057d878ddb1f38c0ab9f51df, e667aee1c192d67d27c803007bfa9c6e0873e959 |
| Linux/Linuxgeneric | 3.0 | 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: mwifiex: bound the pairwise-cipher OUI walk to the IE length mwifiex_search_oui_in_ie() reads a pairwise-cipher (PTK) count from a beacon/probe-response RSN or WPA information element and then walks that many 4-byte OUIs, comparing each with memcmp(). The count comes straight from the (attacker-supplied) IE and is never checked against the element's own length, and the callers admit the element on element_id alone (has_ieee_hdr() / has_vendor_hdr(), no length check). A crafted RSN/WPA IE with a large pairwise count therefore makes the walk read up to 255 * 4 bytes past the element -- an out-of-bounds read of the kmemdup()'d beacon buffer, reachable from any AP whose beacon/probe response is processed during scan-result parsing. Pass the number of IE bytes available at the OUI list and bound the walk to the element. Keep the length signed and reject a negative value before any unsigned arithmetic, so a small or zero IE length cannot underflow to a large size_t and defeat the bound. Found by 0sec automated security-research tooling (https://0sec.ai).
Quoted source text, attributed separately from HOL analysis.