{"id":"CVE-2022-49427","state":"PUBLISHED","title":"iommu/mediatek: Remove clk_disable in mtk_iommu_remove","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/mediatek: Remove clk_disable in mtk_iommu_remove\n\nAfter the commit b34ea31fe013 (\"iommu/mediatek: Always enable the clk on\nresume\"), the iommu clock is controlled by the runtime callback.\nthus remove the clk control in the mtk_iommu_remove.\n\nOtherwise, it will warning like:\n\necho 14018000.iommu > /sys/bus/platform/drivers/mtk-iommu/unbind\n\n[   51.413044] ------------[ cut here ]------------\n[   51.413648] vpp0_smi_iommu already disabled\n[   51.414233] WARNING: CPU: 2 PID: 157 at */v5.15-rc1/kernel/mediatek/\n                          drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8\n[   51.417174] Hardware name: MT8195V/C(ENG) (DT)\n[   51.418635] pc : clk_core_disable+0xb0/0xb8\n[   51.419177] lr : clk_core_disable+0xb0/0xb8\n...\n[   51.429375] Call trace:\n[   51.429694]  clk_core_disable+0xb0/0xb8\n[   51.430193]  clk_core_disable_lock+0x24/0x40\n[   51.430745]  clk_disable+0x20/0x30\n[   51.431189]  mtk_iommu_remove+0x58/0x118\n[   51.431705]  platform_remove+0x28/0x60\n[   51.432197]  device_release_driver_internal+0x110/0x1f0\n[   51.432873]  device_driver_detach+0x18/0x28\n[   51.433418]  unbind_store+0xd4/0x108\n[   51.433886]  drv_attr_store+0x24/0x38\n[   51.434363]  sysfs_kf_write+0x40/0x58\n[   51.434843]  kernfs_fop_write_iter+0x164/0x1e0","publishedAt":"2025-02-26T02:12:47.692Z","updatedAt":"2026-05-23T15:22:15.615Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b34ea31fe013569d42b7e8681ef3f717f77c5b72","status":"affected","lessThan":"053465ab20dcd324a43a1811ee98e5721e6a3e65","versionType":"git"},{"version":"b34ea31fe013569d42b7e8681ef3f717f77c5b72","status":"affected","lessThan":"9b3bd97acb4f8954b8a43a5d63ed9050d463b4e1","versionType":"git"},{"version":"b34ea31fe013569d42b7e8681ef3f717f77c5b72","status":"affected","lessThan":"6eaa046c696c83542c56765cdde564d9818ff1fb","versionType":"git"},{"version":"b34ea31fe013569d42b7e8681ef3f717f77c5b72","status":"affected","lessThan":"98df772bdd1c4ce717a26289efea15cbbe4b64ed","versionType":"git"},{"version":"5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca","status":"affected","versionType":"git"},{"version":"5.12.4","status":"affected","lessThan":"5.13","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iommu/mtk_iommu.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"5.15.46","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.14","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.3","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iommu/mtk_iommu.c"]}],"references":["https://git.kernel.org/stable/c/053465ab20dcd324a43a1811ee98e5721e6a3e65","https://git.kernel.org/stable/c/9b3bd97acb4f8954b8a43a5d63ed9050d463b4e1","https://git.kernel.org/stable/c/6eaa046c696c83542c56765cdde564d9818ff1fb","https://git.kernel.org/stable/c/98df772bdd1c4ce717a26289efea15cbbe4b64ed"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49427.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49427","state":"PUBLISHED","datePublished":"2025-02-26T02:12:47.692Z","dateUpdated":"2026-05-23T15:22:15.615Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:08:31.569Z"},"containers":{"cna":{"title":"iommu/mediatek: Remove clk_disable in mtk_iommu_remove","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/mediatek: Remove clk_disable in mtk_iommu_remove\n\nAfter the commit b34ea31fe013 (\"iommu/mediatek: Always enable the clk on\nresume\"), the iommu clock is controlled by the runtime callback.\nthus remove the clk control in the mtk_iommu_remove.\n\nOtherwise, it will warning like:\n\necho 14018000.iommu > /sys/bus/platform/drivers/mtk-iommu/unbind\n\n[   51.413044] ------------[ cut here ]------------\n[   51.413648] vpp0_smi_iommu already disabled\n[   51.414233] WARNING: CPU: 2 PID: 157 at */v5.15-rc1/kernel/mediatek/\n                          drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8\n[   51.417174] Hardware name: MT8195V/C(ENG) (DT)\n[   51.418635] pc : clk_core_disable+0xb0/0xb8\n[   51.419177] lr : clk_core_disable+0xb0/0xb8\n...\n[   51.429375] Call trace:\n[   51.429694]  clk_core_disable+0xb0/0xb8\n[   51.430193]  clk_core_disable_lock+0x24/0x40\n[   51.430745]  clk_disable+0x20/0x30\n[   51.431189]  mtk_iommu_remove+0x58/0x118\n[   51.431705]  platform_remove+0x28/0x60\n[   51.432197]  device_release_driver_internal+0x110/0x1f0\n[   51.432873]  device_driver_detach+0x18/0x28\n[   51.433418]  unbind_store+0xd4/0x108\n[   51.433886]  drv_attr_store+0x24/0x38\n[   51.434363]  sysfs_kf_write+0x40/0x58\n[   51.434843]  kernfs_fop_write_iter+0x164/0x1e0"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b34ea31fe013569d42b7e8681ef3f717f77c5b72","status":"affected","lessThan":"053465ab20dcd324a43a1811ee98e5721e6a3e65","versionType":"git"},{"version":"b34ea31fe013569d42b7e8681ef3f717f77c5b72","status":"affected","lessThan":"9b3bd97acb4f8954b8a43a5d63ed9050d463b4e1","versionType":"git"},{"version":"b34ea31fe013569d42b7e8681ef3f717f77c5b72","status":"affected","lessThan":"6eaa046c696c83542c56765cdde564d9818ff1fb","versionType":"git"},{"version":"b34ea31fe013569d42b7e8681ef3f717f77c5b72","status":"affected","lessThan":"98df772bdd1c4ce717a26289efea15cbbe4b64ed","versionType":"git"},{"version":"5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca","status":"affected","versionType":"git"},{"version":"5.12.4","status":"affected","lessThan":"5.13","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iommu/mtk_iommu.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"5.15.46","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.14","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.3","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iommu/mtk_iommu.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/053465ab20dcd324a43a1811ee98e5721e6a3e65"},{"url":"https://git.kernel.org/stable/c/9b3bd97acb4f8954b8a43a5d63ed9050d463b4e1"},{"url":"https://git.kernel.org/stable/c/6eaa046c696c83542c56765cdde564d9818ff1fb"},{"url":"https://git.kernel.org/stable/c/98df772bdd1c4ce717a26289efea15cbbe4b64ed"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:22:15.615Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.15.46"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.17.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.18.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12.4"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}