{"id":"CVE-2026-53182","title":"wifi: nl80211: reject oversized EMA RNR lists","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: nl80211: reject oversized EMA RNR lists\n\nnl80211_parse_rnr_elems() stores the parsed element count in a\nu8-backed cfg80211_rnr_elems::cnt field and uses that coun…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 56189d7bc30531def6b999f27940ee43c6ff2569 < fc0ec2fc02dfe52c5821f36fbccf6a45df43f508","Linux >= dbbb27e183b1568d5a907ace1cd144b0709ea52a < 688fcac7054abc680c0eef753f2bb772cfaf8cf7","Linux >= dbbb27e183b1568d5a907ace1cd144b0709ea52a < 30c3fa80f423613efdda3deca4af52ff7d20e4e2","Linux >= dbbb27e183b1568d5a907ace1cd144b0709ea52a < 265c07c09c837621730d35f02975207a1224bf05","Linux >= dbbb27e183b1568d5a907ace1cd144b0709ea52a < ecbf3c45add30a0857414e156bdb9c79906f0ff6","Linux >= dbbb27e183b1568d5a907ace1cd144b0709ea52a < 4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1","Linux >= 6.1.160 < 6.1.176","Linux 6.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:26:12.576651Z"},"published":"2026-06-25","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:31:34.888Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53182","references":[{"url":"https://git.kernel.org/stable/c/fc0ec2fc02dfe52c5821f36fbccf6a45df43f508"},{"url":"https://git.kernel.org/stable/c/688fcac7054abc680c0eef753f2bb772cfaf8cf7"},{"url":"https://git.kernel.org/stable/c/30c3fa80f423613efdda3deca4af52ff7d20e4e2"},{"url":"https://git.kernel.org/stable/c/265c07c09c837621730d35f02975207a1224bf05"},{"url":"https://git.kernel.org/stable/c/ecbf3c45add30a0857414e156bdb9c79906f0ff6"},{"url":"https://git.kernel.org/stable/c/4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1"}],"tags":["cve.org"],"epss":0.00129,"epssPercentile":0.02275,"ingestedAt":"2026-10-16T17:24:46.733Z","slug":"CVE-2026-53182","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: nl80211: reject oversized EMA RNR lists\n\nnl80211_parse_rnr_elems() stores the parsed element count in a\nu8-backed cfg80211_rnr_elems::cnt field and uses that count to size\nthe flexible array allocation.\n\nReject nested NL80211_ATTR_EMA_RNR_ELEMS input once the count reaches\n255, before incrementing it again. This keeps the parser aligned with\nthe data structure it fills and matches the existing bound check used\nby nl80211_parse_mbssid_elems().\n\n## Affected\n\n- `Linux >= 56189d7bc30531def6b999f27940ee43c6ff2569 < fc0ec2fc02dfe52c5821f36fbccf6a45df43f508`\n- `Linux >= dbbb27e183b1568d5a907ace1cd144b0709ea52a < 688fcac7054abc680c0eef753f2bb772cfaf8cf7`\n- `Linux >= dbbb27e183b1568d5a907ace1cd144b0709ea52a < 30c3fa80f423613efdda3deca4af52ff7d20e4e2`\n- `Linux >= dbbb27e183b1568d5a907ace1cd144b0709ea52a < 265c07c09c837621730d35f02975207a1224bf05`\n- `Linux >= dbbb27e183b1568d5a907ace1cd144b0709ea52a < ecbf3c45add30a0857414e156bdb9c79906f0ff6`\n- `Linux >= dbbb27e183b1568d5a907ace1cd144b0709ea52a < 4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1`\n- `Linux >= 6.1.160 < 6.1.176`\n- `Linux 6.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}