{"id":"CVE-2023-6931","revision":null,"records":[{"revision":"8a697cb08ec84abfbe3f0585d9898db9","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-6931","aliases":[],"title":"Out-of-bounds write in Linux kernel's Performance Events system component","description":"A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be exploited to achieve local privilege escalation.\n\n\n\nA perf_event's read_size can overflow, leading to an heap out-of-bounds increment or write in perf_read_group().\n\n\n\nWe recommend upgrading past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b.","state":0,"publishedAt":"2023-12-19T14:09:14.085+00:00","modifiedAt":"2026-10-14T22:15:24.113+00:00","affected":[{"ecosystem":"Vendor product","name":"kernel","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Linux\",\n                    \"product\": \"Linux Kernel\",\n                    \"platforms\": [\n                        \"Linux\"\n                    ],\n                    \"packageName\": \"kernel\",\n                    \"repo\": \"https://git.kernel.org\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"4.3.0\",\n                            \"lessThan\": \"4.19.302\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"4.20.0\",\n                            \"lessThan\": \"5.4.264\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.5.0\",\n                            \"lessThan\": \"5.10.204\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.11.0\",\n                            \"lessThan\": \"5.15.143\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"5.16.0\",\n                            \"lessThan\": \"6.1.68\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"6.2.0\",\n                            \"lessThan\": \"6.6.7\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"6.7.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"382c27f4ed28f803b1f1473ac2d8db0afc795a1b\",\n                            \"versionType\": \"git\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\",\n                    \"cpes\": [\n                        \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\"\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=382c27f4ed28f803b1f1473ac2d8db0afc795a1b","https://kernel.dance/382c27f4ed28f803b1f1473ac2d8db0afc795a1b","https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html","https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-6931","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-6931","identifiers":["CVE-2023-6931"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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