{"id":"CVE-2022-42720","title":"Various refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to trigger use-after-free conditions to potentia…","summary":"Various refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to trigger use-after-free conditions to potentia…","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","cwe":["CWE-416"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.1, < 5.4.218","linux_kernel >= 5.5, < 5.10.148","linux_kernel >= 5.11, < 5.15.74","linux_kernel >= 5.16, < 5.19.16","linux_kernel >= 6.0, < 6.0.2","fedora = 36","fedora = 37","debian_linux = 10.0","debian_linux = 11.0"],"patched":["linux_kernel 6.0.2"],"published":"2022-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T19:16:51.560","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-42720","references":[{"url":"http://packetstormsecurity.com/files/169951/Kernel-Live-Patch-Security-Notice-LSN-0090-1.html","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2022/10/13/5","label":"cve@mitre.org"},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1204059","label":"cve@mitre.org"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git/commit/?id=0b7808818cb9df6680f98996b8e9a439fa7bcc2f","label":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY/","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2/","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR/","label":"cve@mitre.org"},{"url":"https://security.netapp.com/advisory/ntap-20230203-0008/","label":"cve@mitre.org"},{"url":"https://www.debian.org/security/2022/dsa-5257","label":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/169951/Kernel-Live-Patch-Security-Notice-LSN-0090-1.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2022/10/13/5","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1204059","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git/commit/?id=0b7808818cb9df6680f98996b8e9a439fa7bcc2f","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GGHENNMLCWIQV2LLA56BJNFIUZ7WB4IY/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2KTU5LFZNQS7YNGE56MT46VHMXL3DD2/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VNN3VFQPECS6D4PS6ZWD7AFXTOSJDSSR/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20230203-0008/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2022/dsa-5257","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-794697.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.009,"epssPercentile":0.58817,"ingestedAt":"2026-10-14T19:49:57.520Z","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2025-05-15T20:46:43.901512Z"},"slug":"CVE-2022-42720","body":"## Overview\n\nVarious refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to trigger use-after-free conditions to potentially execute code.\n\n## Affected\n\n- `linux_kernel >= 5.1, < 5.4.218`\n- `linux_kernel >= 5.5, < 5.10.148`\n- `linux_kernel >= 5.11, < 5.15.74`\n- `linux_kernel >= 5.16, < 5.19.16`\n- `linux_kernel >= 6.0, < 6.0.2`\n- `fedora = 36`\n- `fedora = 37`\n- `debian_linux = 10.0`\n- `debian_linux = 11.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.0.2`","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":42.9,"likelihood":0.2,"exploitation":12,"ransomware":0},"changes":[{"seq":221809,"id":"CVE-2022-42720","ts":1792035827562,"field":"exploit_available","old":"false","new":"true"}]}