{"id":"CVE-2026-23089","revision":"26598cc8e4d949cda0b80e1f718e299f","records":[{"revision":"26598cc8e4d949cda0b80e1f718e299f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-23089","aliases":[],"title":"ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free()\n\nWhen snd_usb_create_mixer() fails, snd_usb_mixer_free() frees\nmixer->id_elems but the controls already added to the card still\nreference the freed memory. Later when snd_card_register() runs,\nthe OSS mixer layer calls their callbacks and hits a use-after-free read.\n\nCall trace:\n  get_ctl_value+0x63f/0x820 sound/usb/mixer.c:411\n  get_min_max_with_quirks.isra.0+0x240/0x1f40 sound/usb/mixer.c:1241\n  mixer_ctl_feature_info+0x26b/0x490 sound/usb/mixer.c:1381\n  snd_mixer_oss_build_test+0x174/0x3a0 sound/core/oss/mixer_oss.c:887\n  ...\n  snd_card_register+0x4ed/0x6d0 sound/core/init.c:923\n  usb_audio_probe+0x5ef/0x2a90 sound/usb/card.c:1025\n\nFix by calling snd_ctl_remove() for all mixer controls before freeing\nid_elems. We save the next pointer first because snd_ctl_remove()\nfrees the current element.","state":0,"publishedAt":"2026-02-04T16:08:12.575+00:00","modifiedAt":"2026-10-19T18:25:30.214+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"sound/usb/mixer.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\",\n                            \"lessThan\": \"51b1aa6fe7dc87356ba58df06afb9677c9b841ea\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\",\n                            \"lessThan\": \"56fb6efd5d04caf6f14994d51ec85393b9a896c6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\",\n                            \"lessThan\": \"7009daeefa945973a530b2f605fe445fc03747af\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\",\n                            \"lessThan\": \"7bff0156d13f0ad9436e5178b979b063d59f572a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\",\n                            \"lessThan\": \"e6f103a22b08daf5df2f4aa158081840e5910963\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\",\n                            \"lessThan\": \"dc1a5dd80af1ee1f29d8375b12dd7625f6294dad\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6639b6c2367f884ca172b78d69f7da17bfab2e5e\",\n                            \"lessThan\": \"930e69757b74c3ae083b0c3c7419bfe7f0edc7b2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"sound/usb/mixer.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.13\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.13\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.249\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.199\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.162\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.122\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.68\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.8\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/51b1aa6fe7dc87356ba58df06afb9677c9b841ea","https://git.kernel.org/stable/c/56fb6efd5d04caf6f14994d51ec85393b9a896c6","https://git.kernel.org/stable/c/7009daeefa945973a530b2f605fe445fc03747af","https://git.kernel.org/stable/c/7bff0156d13f0ad9436e5178b979b063d59f572a","https://git.kernel.org/stable/c/e6f103a22b08daf5df2f4aa158081840e5910963","https://git.kernel.org/stable/c/dc1a5dd80af1ee1f29d8375b12dd7625f6294dad","https://git.kernel.org/stable/c/930e69757b74c3ae083b0c3c7419bfe7f0edc7b2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23089","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-23089","identifiers":["CVE-2026-23089"]},"retained":false,"historicalAffected":[]}],"coverage":[]}