{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-53182", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.390Z", "datePublished": "2026-06-25T08:38:56.654Z", "dateUpdated": "2026-08-05T12:33:48.954Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:33:48.954Z" }, "descriptions": [ { "lang": "en", "value": "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 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()." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable parser is reached through local nl80211 generic-netlink commands that configure AP beacon data, not by received WiFi frames or remote network traffic.\nAC:L - An attacker who can send the command can deterministically provide 256 or more nested EMA RNR elements; there is no race or condition outside the attacker's control beyond targeting an affected AP-capable configuration.\nPR:L - The commands require CAP_NET_ADMIN via GENL_UNS_ADMIN_PERM, which is checked in the relevant network namespace; under kernel scoring guidance this is low privilege because CAP_NET_ADMIN may be available through user namespaces.\nUI:N - No victim action is required after the attacker sends the crafted nl80211 request.\nS:U - The corruption occurs inside the kernel and impacts the same kernel security authority; it is not a VM escape or other cross-scope boundary violation.\nC:H - The u8 count wrap causes an undersized flexible-array allocation followed by attacker-influenced out-of-bounds heap writes, which is memory corruption plausibly usable for kernel memory disclosure.\nI:H - The bug is a kernel heap out-of-bounds write of RNR element metadata past the allocation, making arbitrary corruption or control-flow compromise defensible.\nA:H - The same heap corruption can readily crash or panic the kernel even if not weaponized for code execution." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/wireless/nl80211.c" ], "versions": [ { "version": "56189d7bc30531def6b999f27940ee43c6ff2569", "lessThan": "fc0ec2fc02dfe52c5821f36fbccf6a45df43f508", "status": "affected", "versionType": "git" }, { "version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a", "lessThan": "688fcac7054abc680c0eef753f2bb772cfaf8cf7", "status": "affected", "versionType": "git" }, { "version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a", "lessThan": "30c3fa80f423613efdda3deca4af52ff7d20e4e2", "status": "affected", "versionType": "git" }, { "version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a", "lessThan": "265c07c09c837621730d35f02975207a1224bf05", "status": "affected", "versionType": "git" }, { "version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a", "lessThan": "ecbf3c45add30a0857414e156bdb9c79906f0ff6", "status": "affected", "versionType": "git" }, { "version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a", "lessThan": "4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1", "status": "affected", "versionType": "git" }, { "version": "6.1.160", "lessThan": "6.1.176", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/wireless/nl80211.c" ], "versions": [ { "version": "6.4", "status": "affected" }, { "version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.13", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.160", "versionEndExcluding": "6.1.176" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.6.143" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.12.94" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "6.18.36" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.0.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.4", "versionEndExcluding": "7.1" } ] } ] } ], "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" } ], "title": "wifi: nl80211: reject oversized EMA RNR lists", "x_generator": { "engine": "bippy-1.2.0" } } } }