{"id":"CVE-2026-98183","revision":"fb23697b7542434bb7fe1ff842b5d0f1","records":[{"revision":"fb23697b7542434bb7fe1ff842b5d0f1","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98183","aliases":[],"title":"wifi: mac80211: avoid out-of-bounds read for empty PREQ elements","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: avoid out-of-bounds read for empty PREQ elements\n\nieee80211_mesh_preq_size_ok() derives the location of the PREQ bottom\nfields before checking whether the element contains even the fixed\nheader. ieee80211_mesh_hwmp_preq_get_bottom() reads the flags byte to\naccount for the optional Address Extension field. Consequently, an\nempty PREQ element causes a one-byte read beyond its declared payload.\n\nMove the helper call after both size checks, so the bottom fields are\nonly accessed when they are present.","state":0,"publishedAt":"2026-10-06T08:44:26.024+00:00","modifiedAt":"2026-10-19T09:15:14.41+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                        \"include/linux/ieee80211-mesh.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae\",\n                            \"lessThan\": \"3beddbd56946577478fd5e649f556aaaebe15b0a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae\",\n                            \"lessThan\": \"e6031f02269c0f51cf67886d177f02bc300b47cd\",\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                        \"include/linux/ieee80211-mesh.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"7.2\",\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/3beddbd56946577478fd5e649f556aaaebe15b0a","https://git.kernel.org/stable/c/e6031f02269c0f51cf67886d177f02bc300b47cd"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98183","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98183","identifiers":["CVE-2026-98183"]},"retained":false,"historicalAffected":[]}],"coverage":[]}