{"id":"CVE-2023-3772","title":"A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem)","summary":"A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to directly dereference a NULL pointer in xfrm_update_ae_params(), leading…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-476","CWE-476"],"vendor":"redhat","product":"enterprise_linux","affected":["enterprise_linux = 8.0","enterprise_linux = 9.0","enterprise_linux_for_real_time = 8.0","enterprise_linux_for_real_time_for_nfv = 8.0","fedora","linux_kernel","debian_linux = 10.0","debian_linux = 12.0"],"published":"2023-07-25","updated":"2026-10-14","sourceUpdated":"2026-10-14T22:17:15.513","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-3772","references":[{"url":"https://access.redhat.com/errata/RHSA-2023:6583","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2023:6901","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2023:7077","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:0412","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2024:0575","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2023-3772","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2218943","label":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/08/10/1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/08/10/3","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2023:6583","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2023:6901","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2023:7077","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:0412","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2024:0575","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/security/cve/CVE-2023-3772","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2218943","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://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-794697.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.00452,"epssPercentile":0.3767,"ingestedAt":"2026-10-14T23:00:01.999Z","slug":"CVE-2023-3772","body":"## Overview\n\nA flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to directly dereference a NULL pointer in xfrm_update_ae_params(), leading to a possible kernel crash and denial of service.\n\n## Affected\n\n- `enterprise_linux = 8.0`\n- `enterprise_linux = 9.0`\n- `enterprise_linux_for_real_time = 8.0`\n- `enterprise_linux_for_real_time_for_nfv = 8.0`\n- `fedora`\n- `linux_kernel`\n- `debian_linux = 10.0`\n- `debian_linux = 12.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}