{"id":"CVE-2025-68298","summary":"Bluetooth: btusb: mediatek: Avoid btusb_mtk_claim_iso_intf() NULL deref","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: mediatek: Avoid btusb_mtk_claim_iso_intf() NULL deref\n\nIn btusb_mtk_setup(), we set `btmtk_data-\u003eisopkt_intf` to:\n  usb_ifnum_to_if(data-\u003eudev, MTK_ISO_IFNUM)\n\nThat function can return NULL in some cases. Even when it returns\nNULL, though, we still go on to call btusb_mtk_claim_iso_intf().\n\nAs of commit e9087e828827 (\"Bluetooth: btusb: mediatek: Add locks for\nusb_driver_claim_interface()\"), calling btusb_mtk_claim_iso_intf()\nwhen `btmtk_data-\u003eisopkt_intf` is NULL will cause a crash because\nwe'll end up passing a bad pointer to device_lock(). Prior to that\ncommit we'd pass the NULL pointer directly to\nusb_driver_claim_interface() which would detect it and return an\nerror, which was handled.\n\nResolve the crash in btusb_mtk_claim_iso_intf() by adding a NULL check\nat the start of the function. This makes the code handle a NULL\n`btmtk_data-\u003eisopkt_intf` the same way it did before the problematic\ncommit (just with a slight change to the error message printed).","modified":"2026-04-02T13:03:31.209617Z","published":"2025-12-16T15:06:17.526Z","related":["SUSE-SU-2026:0278-1","SUSE-SU-2026:0281-1","SUSE-SU-2026:0315-1","SUSE-SU-2026:20207-1","SUSE-SU-2026:20220-1","SUSE-SU-2026:20228-1","openSUSE-SU-2026:20145-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68298.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2fa09fe98ca3b114d66285f65f7e108fea131815"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c3b990e0b23068da65f0004cd38ee31f43f36460"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c884a0b27b4586e607431d86a1aa0bb4fb39169c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68298.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68298"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"930e1790b99e5839e1af69d2f7fd808f1fba2df9"},{"fixed":"2fa09fe98ca3b114d66285f65f7e108fea131815"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e9087e828827e5a5c85e124ce77503f2b81c3491"},{"fixed":"c3b990e0b23068da65f0004cd38ee31f43f36460"},{"fixed":"c884a0b27b4586e607431d86a1aa0bb4fb39169c"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"4194766ec8756f4f654d595ae49962acbac49490"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68298.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.61"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.17.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68298.json"}}],"schema_version":"1.7.5"}