{"id":"CVE-2026-98699","revision":"ecd9b08a6937419396fe620c910920bd","records":[{"revision":"ecd9b08a6937419396fe620c910920bd","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98699","aliases":[],"title":"wifi: mac80211: fix mesh fast xmit path deletion UAF","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: fix mesh fast xmit path deletion UAF\n\nmesh_fast_tx_cache() stores raw mesh_path pointers. Path deletion\nflushes the cache and then frees the path with kfree_rcu(), but a\nlookup that already holds the path can insert a new cache entry\nafter the flush. The cache then points at freed memory.\n\nSet MESH_PATH_DELETED before flushing, and skip inserting a cache\nentry if the path or MPP path is already deleted. Check this under\nthe cache walk lock so it is ordered with the flush. Use WRITE_ONCE()\nfor the deletion flag updates because the cache check reads flags\nwithout taking state_lock.","state":0,"publishedAt":"2026-10-18T15:46:29.245+00:00","modifiedAt":"2026-10-21T12:55:49.005+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                        \"net/mac80211/mesh_pathtbl.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"d5edb9ae8d568745f893c5c5fa3837d85311b131\",\n                            \"lessThan\": \"ebb7cba623d38733d33d79a8c7442f5ea04c0fb0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d5edb9ae8d568745f893c5c5fa3837d85311b131\",\n                            \"lessThan\": \"0117f1aa189495e6f1ff608681678817995aee39\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d5edb9ae8d568745f893c5c5fa3837d85311b131\",\n                            \"lessThan\": \"128e800a41270ab197b1cc8043637a2924865608\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d5edb9ae8d568745f893c5c5fa3837d85311b131\",\n                            \"lessThan\": \"93da3ec938bfdcfb3899428f04c6d0c56fe32952\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"d5edb9ae8d568745f893c5c5fa3837d85311b131\",\n                            \"lessThan\": \"ee3aadc43ea69d98f666431e787137ac0badbb85\",\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                        \"net/mac80211/mesh_pathtbl.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.4\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.113\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.56\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.10\",\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/ebb7cba623d38733d33d79a8c7442f5ea04c0fb0","https://git.kernel.org/stable/c/0117f1aa189495e6f1ff608681678817995aee39","https://git.kernel.org/stable/c/128e800a41270ab197b1cc8043637a2924865608","https://git.kernel.org/stable/c/93da3ec938bfdcfb3899428f04c6d0c56fe32952","https://git.kernel.org/stable/c/ee3aadc43ea69d98f666431e787137ac0badbb85"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98699","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98699","identifiers":["CVE-2026-98699"]},"retained":false,"historicalAffected":[]}],"coverage":[]}