{"id":"CVE-2022-49976","state":"PUBLISHED","title":"platform/x86: x86-android-tablets: Fix broken touchscreen on Chuwi Hi8 with Windows BIOS","description":"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.","publishedAt":"2025-06-18T11:00:38.959Z","updatedAt":"2026-05-11T19:10:20.310Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"84c2dcdd475f3f5d1d30c87404cafba4dd4b75ec","status":"affected","lessThan":"c77b724cddfb8ac1291a60e3e68937e62cbfc5e0","versionType":"git"},{"version":"84c2dcdd475f3f5d1d30c87404cafba4dd4b75ec","status":"affected","lessThan":"2986c51540ed50ac654ffb5a772e546c02628c91","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/x86-android-tablets.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"5.19.8","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/x86-android-tablets.c"]}],"references":["https://git.kernel.org/stable/c/c77b724cddfb8ac1291a60e3e68937e62cbfc5e0","https://git.kernel.org/stable/c/2986c51540ed50ac654ffb5a772e546c02628c91"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49976.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49976","state":"PUBLISHED","datePublished":"2025-06-18T11:00:38.959Z","dateUpdated":"2026-05-11T19:10:20.310Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-06-18T10:57:27.385Z"},"containers":{"cna":{"title":"platform/x86: x86-android-tablets: Fix broken touchscreen on Chuwi Hi8 with Windows BIOS","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"84c2dcdd475f3f5d1d30c87404cafba4dd4b75ec","status":"affected","lessThan":"c77b724cddfb8ac1291a60e3e68937e62cbfc5e0","versionType":"git"},{"version":"84c2dcdd475f3f5d1d30c87404cafba4dd4b75ec","status":"affected","lessThan":"2986c51540ed50ac654ffb5a772e546c02628c91","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/x86-android-tablets.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"5.19.8","status":"unaffected","lessThanOrEqual":"5.19.*","versionType":"semver"},{"version":"6.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/x86-android-tablets.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c77b724cddfb8ac1291a60e3e68937e62cbfc5e0"},{"url":"https://git.kernel.org/stable/c/2986c51540ed50ac654ffb5a772e546c02628c91"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:10:20.310Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"5.19.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}