{"id":"CVE-2026-101308","revision":"9b5429a5a79145bf91afc7a849a199b4","records":[{"revision":"9b5429a5a79145bf91afc7a849a199b4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-101308","aliases":[],"title":"TOCTOU race between sound(4) buffer resizing and mmap","description":"When an audio channel's buffer needs to be resized, the sound(4) driver checks that the buffer is not memory-mapped and then drops the channel lock to allocate a new buffer.  An mmap(2) call on another thread can complete during this window, after which the resize path frees the now-mapped buffer without rechecking.\n\nAn unprivileged local user with access to a sound device can exploit this race to trigger a use-after-free in the kernel, potentially escalating privileges.","state":0,"publishedAt":"2026-10-15T07:08:52.619+00:00","modifiedAt":"2026-10-15T15:40:12.607+00:00","affected":[{"ecosystem":"Vendor product","name":"FreeBSD","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unknown\",\n                    \"modules\": [\n                        \"sound\"\n                    ],\n                    \"product\": \"FreeBSD\",\n                    \"vendor\": \"FreeBSD\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"versionType\": \"release\",\n                            \"version\": \"15.1-RELEASE\",\n                            \"lessThan\": \"p5\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"versionType\": \"release\",\n                            \"version\": \"14.5-RELEASE\",\n                            \"lessThan\": \"p2\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"versionType\": \"release\",\n                            \"version\": \"14.4-RELEASE\",\n                            \"lessThan\": \"p11\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://security.freebsd.org/advisories/FreeBSD-SA-26:71.sound.asc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-101308","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-101308","identifiers":["CVE-2026-101308"]},"retained":false,"historicalAffected":[]}],"coverage":[]}