{"id":"CVE-2026-98186","published":"2026-10-06T09:18:03.540","lastModified":"2026-10-06T09:18:03.540","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: bound the pairwise-cipher OUI walk to the IE length\n\nmwifiex_search_oui_in_ie() reads a pairwise-cipher (PTK) count from a\nbeacon/probe-response RSN or WPA information element and then walks that\nmany 4-byte OUIs, comparing each with memcmp(). The count comes straight\nfrom the (attacker-supplied) IE and is never checked against the\nelement's own length, and the callers admit the element on element_id\nalone (has_ieee_hdr() / has_vendor_hdr(), no length check). A crafted\nRSN/WPA IE with a large pairwise count therefore makes the walk read up\nto 255 * 4 bytes past the element -- an out-of-bounds read of the\nkmemdup()'d beacon buffer, reachable from any AP whose beacon/probe\nresponse is processed during scan-result parsing.\n\nPass the number of IE bytes available at the OUI list and bound the walk\nto the element. Keep the length signed and reject a negative value\nbefore any unsigned arithmetic, so a small or zero IE length cannot\nunderflow to a large size_t and defeat the bound.\n\nFound by 0sec automated security-research tooling (https://0sec.ai).","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/2402c9e2644b7e10c7aaaf87bf12743d7e363559","tags":[]},{"url":"https://git.kernel.org/stable/c/46cda9d42f0d6ec3057d878ddb1f38c0ab9f51df","tags":[]},{"url":"https://git.kernel.org/stable/c/54a9cc5bd70b0d77a5069d4c46998c679a10c857","tags":[]},{"url":"https://git.kernel.org/stable/c/58767b41f87244eebaa5a475b9d276c83b89b933","tags":[]},{"url":"https://git.kernel.org/stable/c/77e642af7f2f6029e12a35c847c56cbd0466e799","tags":[]},{"url":"https://git.kernel.org/stable/c/8bbef2b1ebfbadc0b9c37bbbf9c9e26fe2e41960","tags":[]},{"url":"https://git.kernel.org/stable/c/982b8fcdbb28f63bbbf02f0822c0bbda12ec27ed","tags":[]},{"url":"https://git.kernel.org/stable/c/e667aee1c192d67d27c803007bfa9c6e0873e959","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}