{"id":"CVE-2022-49976","summary":"platform/x86: x86-android-tablets: Fix broken touchscreen on Chuwi Hi8 with Windows BIOS","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: x86-android-tablets: Fix broken touchscreen on Chuwi Hi8 with Windows BIOS\n\nThe x86-android-tablets handling for the Chuwi Hi8 is only necessary with\nthe Android BIOS and it is causing problems with the Windows BIOS version.\n\nSpecifically when trying to register the already present touchscreen\nx86_acpi_irq_helper_get() calls acpi_unregister_gsi(), this breaks\nthe working of the touchscreen and also leads to an oops:\n\n[   14.248946] ------------[ cut here ]------------\n[   14.248954] remove_proc_entry: removing non-empty directory 'irq/75', leaking at least 'MSSL0001:00'\n[   14.248983] WARNING: CPU: 3 PID: 440 at fs/proc/generic.c:718 remove_proc_entry\n...\n[   14.249293]  unregister_irq_proc+0xe0/0x100\n[   14.249305]  free_desc+0x29/0x70\n[   14.249312]  irq_free_descs+0x4b/0x80\n[   14.249320]  mp_unmap_irq+0x5c/0x60\n[   14.249329]  acpi_unregister_gsi_ioapic+0x2a/0x40\n[   14.249338]  x86_acpi_irq_helper_get+0x4b/0x190 [x86_android_tablets]\n[   14.249355]  x86_android_tablet_init+0x178/0xe34 [x86_android_tablets]\n\nAdd an init callback for the Chuwi Hi8, which detects when the Windows BIOS\nis in use and exits with -ENODEV in that case, fixing this.","modified":"2026-08-12T03:51:21.983972261Z","published":"2025-06-18T11:00:38.959Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49976.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2986c51540ed50ac654ffb5a772e546c02628c91"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c77b724cddfb8ac1291a60e3e68937e62cbfc5e0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49976.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49976"},{"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":"84c2dcdd475f3f5d1d30c87404cafba4dd4b75ec"},{"fixed":"c77b724cddfb8ac1291a60e3e68937e62cbfc5e0"},{"fixed":"2986c51540ed50ac654ffb5a772e546c02628c91"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49976.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.17.0"},{"fixed":"5.19.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49976.json"}}],"schema_version":"1.9.0"}