{"id":"CVE-2026-97518","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: reject duplicate wiphy cipher suite entries\n\nDuplicate entries in wiphy->cipher_suites do not describe any\nadditional capability, but cfg80211 currently…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: reject duplicate wiphy cipher suite entries\n\nDuplicate entries in wiphy->cipher_suites do not describe any\nadditional capability, but cfg80211 currently…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1305f8b925fe92edf5fec183588dfc7db719180b","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7187d145d9042b037e4f10538f70cf95e380219f","Linux < 6.12.111","Linux < 6.18.53","Linux (all versions)"],"published":"2026-09-24","updated":"2026-09-28","sourceUpdated":"2026-09-28T06:16:37.827","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97518","references":[{"url":"https://git.kernel.org/stable/c/1305f8b925fe92edf5fec183588dfc7db719180b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7187d145d9042b037e4f10538f70cf95e380219f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97518.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97518"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2540382"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97518"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97518"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97518.mbox"},{"url":"https://git.kernel.org/stable/c/d12e92e72db914e1ea777c6f246f6be75985438e"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00157,"epssPercentile":0.04782,"ingestedAt":"2026-09-24T16:47:15.859Z","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-787"],"slug":"CVE-2026-97518","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: reject duplicate wiphy cipher suite entries\n\nDuplicate entries in wiphy->cipher_suites do not describe any\nadditional capability, but cfg80211 currently accepts them and leaves\nindividual consumers to deal with them.\n\nOne such consumer is the WEXT compatibility code, which appends a WEP\nkey length for each WEP cipher entry it sees. Repeated WEP entries can\ntherefore overflow the fixed iw_range::encoding_size array returned by\nSIOCGIWRANGE.\n\nReject duplicate cipher suite entries in wiphy_register() instead.\nThis keeps the cipher suite invariant in one place and makes malformed\nwiphy descriptions fail early with -EINVAL, rather than relying on a\nsingle cfg80211 user to handle duplicates correctly.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97518.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":212545,"id":"CVE-2026-97518","ts":1790668209668,"field":"cvss","old":null,"new":"5.5"},{"seq":212544,"id":"CVE-2026-97518","ts":1790668209668,"field":"severity","old":"none","new":"medium"}]}