{"id":"CVE-2023-40283","title":"An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10","summary":"An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.","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 >= 3.5, < 4.14.322","linux_kernel >= 4.15, < 4.19.291","linux_kernel >= 4.20, < 5.4.253","linux_kernel >= 5.5, < 5.10.190","linux_kernel >= 5.11, < 5.15.126","linux_kernel >= 5.16, < 6.1.45","linux_kernel >= 6.2, < 6.4.10","debian_linux = 10.0","debian_linux = 11.0","debian_linux = 12.0","ubuntu_linux = 14.04","ubuntu_linux = 16.04","ubuntu_linux = 18.04","ubuntu_linux = 20.04","ubuntu_linux = 22.04"],"patched":["linux_kernel 6.4.10"],"published":"2023-08-14","updated":"2026-10-15","sourceUpdated":"2026-10-15T00:16:36.733","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-40283","references":[{"url":"http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html","label":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html","label":"cve@mitre.org"},{"url":"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.10","label":"cve@mitre.org"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1728137b33c00d5a2b5110ed7aafb42e7c32e4a1","label":"cve@mitre.org"},{"url":"https://github.com/torvalds/linux/commit/1728137b33c00d5a2b5110ed7aafb42e7c32e4a1","label":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html","label":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html","label":"cve@mitre.org"},{"url":"https://security.netapp.com/advisory/ntap-20231020-0007/","label":"cve@mitre.org"},{"url":"https://www.debian.org/security/2023/dsa-5480","label":"cve@mitre.org"},{"url":"https://www.debian.org/security/2023/dsa-5492","label":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.10","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1728137b33c00d5a2b5110ed7aafb42e7c32e4a1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/torvalds/linux/commit/1728137b33c00d5a2b5110ed7aafb42e7c32e4a1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20231020-0007/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2023/dsa-5480","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2023/dsa-5492","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-806742.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.0055,"epssPercentile":0.45812,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2024-05-10T04:00:08.967057Z"},"ingestedAt":"2026-09-18T15:44:31.588Z","slug":"CVE-2023-40283","body":"## Overview\n\nAn issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.\n\n## Affected\n\n- `linux_kernel >= 3.5, < 4.14.322`\n- `linux_kernel >= 4.15, < 4.19.291`\n- `linux_kernel >= 4.20, < 5.4.253`\n- `linux_kernel >= 5.5, < 5.10.190`\n- `linux_kernel >= 5.11, < 5.15.126`\n- `linux_kernel >= 5.16, < 6.1.45`\n- `linux_kernel >= 6.2, < 6.4.10`\n- `debian_linux = 10.0`\n- `debian_linux = 11.0`\n- `debian_linux = 12.0`\n- `ubuntu_linux = 14.04`\n- `ubuntu_linux = 16.04`\n- `ubuntu_linux = 18.04`\n- `ubuntu_linux = 20.04`\n- `ubuntu_linux = 22.04`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.4.10`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}