{"id":"CVE-2026-72346","summary":"platform/x86: bitland-mifs-wmi: Fix NULL pointer dereference during suspend/resume","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: bitland-mifs-wmi: Fix NULL pointer dereference during suspend/resume\n\nThe driver registers two distinct WMI devices: a control device\n(BITLAND_WMI_CONTROL) and an event device (BITLAND_WMI_EVENT). During\nthe probe phase, the event device handling path returns early before\ninitializing the platform profile device (data-\u003epp_dev), leaving it\nNULL.\n\nHowever, the PM sleep operations are registered globally for the WMI\ndriver and are triggered for both devices. When entering suspend, the\nevent device invokes bitland_mifs_wmi_suspend(), which passes the\nuninitialized data-\u003epp_dev (NULL) into laptop_profile_get(). This leads\nto a NULL pointer dereference inside dev_get_drvdata(), causing a\nkernel Oops and halting the suspend sequence.\n\nFix this by adding a validity check for data-\u003epp_dev in both the suspend\nand resume callbacks, safely skipping profile operations for the event\ndevice.","modified":"2026-08-18T03:31:30.043842993Z","published":"2026-08-15T05:55:51.054Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72346.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6f2cb20d8e286218d51754f06ee219d8ce754b18"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d3666875c75eb1bc8090343fa0d6fc8fb7924356"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72346.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72346"},{"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":"dc1ec4fa86b2b8bba2b6122f2b4420217b5bae9e"},{"fixed":"6f2cb20d8e286218d51754f06ee219d8ce754b18"},{"fixed":"d3666875c75eb1bc8090343fa0d6fc8fb7924356"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72346.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.1.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72346.json"}}],"schema_version":"1.9.0"}