{"id":"CVE-2026-98186","revision":"ad80dd1eb2a9476788ded1118026ee30","records":[{"revision":"ad80dd1eb2a9476788ded1118026ee30","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98186","aliases":[],"title":"wifi: mwifiex: bound the pairwise-cipher OUI walk to the IE length","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).","state":0,"publishedAt":"2026-10-06T08:44:28.429+00:00","modifiedAt":"2026-10-19T09:15:17.749+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/wireless/marvell/mwifiex/scan.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e\",\n                            \"lessThan\": \"77e642af7f2f6029e12a35c847c56cbd0466e799\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e\",\n                            \"lessThan\": \"982b8fcdbb28f63bbbf02f0822c0bbda12ec27ed\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e\",\n                            \"lessThan\": \"58767b41f87244eebaa5a475b9d276c83b89b933\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e\",\n                            \"lessThan\": \"2402c9e2644b7e10c7aaaf87bf12743d7e363559\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e\",\n                            \"lessThan\": \"54a9cc5bd70b0d77a5069d4c46998c679a10c857\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e\",\n                            \"lessThan\": \"8bbef2b1ebfbadc0b9c37bbbf9c9e26fe2e41960\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e\",\n                            \"lessThan\": \"46cda9d42f0d6ec3057d878ddb1f38c0ab9f51df\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e\",\n                            \"lessThan\": \"e667aee1c192d67d27c803007bfa9c6e0873e959\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/wireless/marvell/mwifiex/scan.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.271\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/77e642af7f2f6029e12a35c847c56cbd0466e799","https://git.kernel.org/stable/c/982b8fcdbb28f63bbbf02f0822c0bbda12ec27ed","https://git.kernel.org/stable/c/58767b41f87244eebaa5a475b9d276c83b89b933","https://git.kernel.org/stable/c/2402c9e2644b7e10c7aaaf87bf12743d7e363559","https://git.kernel.org/stable/c/54a9cc5bd70b0d77a5069d4c46998c679a10c857","https://git.kernel.org/stable/c/8bbef2b1ebfbadc0b9c37bbbf9c9e26fe2e41960","https://git.kernel.org/stable/c/46cda9d42f0d6ec3057d878ddb1f38c0ab9f51df","https://git.kernel.org/stable/c/e667aee1c192d67d27c803007bfa9c6e0873e959"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98186","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98186","identifiers":["CVE-2026-98186"]},"retained":false,"historicalAffected":[]}],"coverage":[]}