{"id":"CVE-2023-6932","title":"A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation.\n\nA race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object wh…","summary":"A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation.\n\nA race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object wh…","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","CWE-416"],"vendor":"debian","product":"debian_linux","affected":["debian_linux = 10.0","linux_kernel < 4.14.332","linux_kernel >= 4.15, < 4.19.301","linux_kernel >= 4.20, < 5.4.263","linux_kernel >= 5.5, < 5.10.203","linux_kernel >= 5.11, < 5.15.142","linux_kernel >= 5.16, < 6.1.66","linux_kernel >= 6.2, < 6.6.5"],"patched":["linux_kernel 6.6.5"],"published":"2023-12-19","updated":"2026-10-14","sourceUpdated":"2026-10-14T23:17:21.020","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-6932","references":[{"url":"http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html","label":"cve-coordination@google.com"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=e2b706c691905fe78468c361aaabc719d0a496f1","label":"cve-coordination@google.com"},{"url":"https://kernel.dance/e2b706c691905fe78468c361aaabc719d0a496f1","label":"cve-coordination@google.com"},{"url":"https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html","label":"cve-coordination@google.com"},{"url":"https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html","label":"cve-coordination@google.com"},{"url":"http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=e2b706c691905fe78468c361aaabc719d0a496f1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://kernel.dance/e2b706c691905fe78468c361aaabc719d0a496f1","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://lists.debian.org/debian-lts-announce/2024/01/msg00005.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"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-613116.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-794697.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.00367,"epssPercentile":0.28939,"ingestedAt":"2026-10-15T00:02:07.135Z","slug":"CVE-2023-6932","body":"## Overview\n\nA use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation.\n\nA race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread.\n\nWe recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.\n\n## Affected\n\n- `debian_linux = 10.0`\n- `linux_kernel < 4.14.332`\n- `linux_kernel >= 4.15, < 4.19.301`\n- `linux_kernel >= 4.20, < 5.4.263`\n- `linux_kernel >= 5.5, < 5.10.203`\n- `linux_kernel >= 5.11, < 5.15.142`\n- `linux_kernel >= 5.16, < 6.1.66`\n- `linux_kernel >= 6.2, < 6.6.5`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.6.5`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}