{"id":"CVE-2026-98183","title":"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 t…","summary":"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 t…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae < 3beddbd56946577478fd5e649f556aaaebe15b0a","Linux >= 8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae < e6031f02269c0f51cf67886d177f02bc300b47cd","Linux 7.2"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:03.103","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98183","references":[{"url":"https://git.kernel.org/stable/c/3beddbd56946577478fd5e649f556aaaebe15b0a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e6031f02269c0f51cf67886d177f02bc300b47cd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T08:50:17.452Z","slug":"CVE-2026-98183","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}