CVE-2022-48796 (GCVE-0-2022-48796)

Vulnerability from cvelistv5 – Published: 2024-07-16 11:43 – Updated: 2026-05-11 18:47
VLAI
Title
iommu: Fix potential use-after-free during probe
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu: Fix potential use-after-free during probe Kasan has reported the following use after free on dev->iommu. when a device probe fails and it is in process of freeing dev->iommu in dev_iommu_free function, a deferred_probe_work_func runs in parallel and tries to access dev->iommu->fwspec in of_iommu_configure path thus causing use after free. BUG: KASAN: use-after-free in of_iommu_configure+0xb4/0x4a4 Read of size 8 at addr ffffff87a2f1acb8 by task kworker/u16:2/153 Workqueue: events_unbound deferred_probe_work_func Call trace: dump_backtrace+0x0/0x33c show_stack+0x18/0x24 dump_stack_lvl+0x16c/0x1e0 print_address_description+0x84/0x39c __kasan_report+0x184/0x308 kasan_report+0x50/0x78 __asan_load8+0xc0/0xc4 of_iommu_configure+0xb4/0x4a4 of_dma_configure_id+0x2fc/0x4d4 platform_dma_configure+0x40/0x5c really_probe+0x1b4/0xb74 driver_probe_device+0x11c/0x228 __device_attach_driver+0x14c/0x304 bus_for_each_drv+0x124/0x1b0 __device_attach+0x25c/0x334 device_initial_probe+0x24/0x34 bus_probe_device+0x78/0x134 deferred_probe_work_func+0x130/0x1a8 process_one_work+0x4c8/0x970 worker_thread+0x5c8/0xaec kthread+0x1f8/0x220 ret_from_fork+0x10/0x18 Allocated by task 1: ____kasan_kmalloc+0xd4/0x114 __kasan_kmalloc+0x10/0x1c kmem_cache_alloc_trace+0xe4/0x3d4 __iommu_probe_device+0x90/0x394 probe_iommu_group+0x70/0x9c bus_for_each_dev+0x11c/0x19c bus_iommu_probe+0xb8/0x7d4 bus_set_iommu+0xcc/0x13c arm_smmu_bus_init+0x44/0x130 [arm_smmu] arm_smmu_device_probe+0xb88/0xc54 [arm_smmu] platform_drv_probe+0xe4/0x13c really_probe+0x2c8/0xb74 driver_probe_device+0x11c/0x228 device_driver_attach+0xf0/0x16c __driver_attach+0x80/0x320 bus_for_each_dev+0x11c/0x19c driver_attach+0x38/0x48 bus_add_driver+0x1dc/0x3a4 driver_register+0x18c/0x244 __platform_driver_register+0x88/0x9c init_module+0x64/0xff4 [arm_smmu] do_one_initcall+0x17c/0x2f0 do_init_module+0xe8/0x378 load_module+0x3f80/0x4a40 __se_sys_finit_module+0x1a0/0x1e4 __arm64_sys_finit_module+0x44/0x58 el0_svc_common+0x100/0x264 do_el0_svc+0x38/0xa4 el0_svc+0x20/0x30 el0_sync_handler+0x68/0xac el0_sync+0x160/0x180 Freed by task 1: kasan_set_track+0x4c/0x84 kasan_set_free_info+0x28/0x4c ____kasan_slab_free+0x120/0x15c __kasan_slab_free+0x18/0x28 slab_free_freelist_hook+0x204/0x2fc kfree+0xfc/0x3a4 __iommu_probe_device+0x284/0x394 probe_iommu_group+0x70/0x9c bus_for_each_dev+0x11c/0x19c bus_iommu_probe+0xb8/0x7d4 bus_set_iommu+0xcc/0x13c arm_smmu_bus_init+0x44/0x130 [arm_smmu] arm_smmu_device_probe+0xb88/0xc54 [arm_smmu] platform_drv_probe+0xe4/0x13c really_probe+0x2c8/0xb74 driver_probe_device+0x11c/0x228 device_driver_attach+0xf0/0x16c __driver_attach+0x80/0x320 bus_for_each_dev+0x11c/0x19c driver_attach+0x38/0x48 bus_add_driver+0x1dc/0x3a4 driver_register+0x18c/0x244 __platform_driver_register+0x88/0x9c init_module+0x64/0xff4 [arm_smmu] do_one_initcall+0x17c/0x2f0 do_init_module+0xe8/0x378 load_module+0x3f80/0x4a40 __se_sys_finit_module+0x1a0/0x1e4 __arm64_sys_finit_module+0x44/0x58 el0_svc_common+0x100/0x264 do_el0_svc+0x38/0xa4 el0_svc+0x20/0x30 el0_sync_handler+0x68/0xac el0_sync+0x160/0x180 Fix this by setting dev->iommu to NULL first and then freeing dev_iommu structure in dev_iommu_free function.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0c830e6b32826311fc2b9ea1f4679be0f4ef0933 , < cb86e511e78e796de6947b8f3acca1b7c76fb2ff (git)
Affected: 0c830e6b32826311fc2b9ea1f4679be0f4ef0933 , < 65ab30f6a6952fa9ee13009862736cf8d110e6e5 (git)
Affected: 0c830e6b32826311fc2b9ea1f4679be0f4ef0933 , < f74fc4b5bd533ea3d30ce47cccb8ef8d21fda85a (git)
Affected: 0c830e6b32826311fc2b9ea1f4679be0f4ef0933 , < b54240ad494300ff0994c4539a531727874381f4 (git)
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Linux Linux Affected: 5.3
Unaffected: 0 , < 5.3 (semver)
Unaffected: 5.10.101 , ≤ 5.10.* (semver)
Unaffected: 5.15.24 , ≤ 5.15.* (semver)
Unaffected: 5.16.10 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu: Fix potential use-after-free during probe\n\nKasan has reported the following use after free on dev-\u003eiommu.\nwhen a device probe fails and it is in process of freeing dev-\u003eiommu\nin dev_iommu_free function, a deferred_probe_work_func runs in parallel\nand tries to access dev-\u003eiommu-\u003efwspec in of_iommu_configure path thus\ncausing use after free.\n\nBUG: KASAN: use-after-free in of_iommu_configure+0xb4/0x4a4\nRead of size 8 at addr ffffff87a2f1acb8 by task kworker/u16:2/153\n\nWorkqueue: events_unbound deferred_probe_work_func\nCall trace:\n dump_backtrace+0x0/0x33c\n show_stack+0x18/0x24\n dump_stack_lvl+0x16c/0x1e0\n print_address_description+0x84/0x39c\n __kasan_report+0x184/0x308\n kasan_report+0x50/0x78\n __asan_load8+0xc0/0xc4\n of_iommu_configure+0xb4/0x4a4\n of_dma_configure_id+0x2fc/0x4d4\n platform_dma_configure+0x40/0x5c\n really_probe+0x1b4/0xb74\n driver_probe_device+0x11c/0x228\n __device_attach_driver+0x14c/0x304\n bus_for_each_drv+0x124/0x1b0\n __device_attach+0x25c/0x334\n device_initial_probe+0x24/0x34\n bus_probe_device+0x78/0x134\n deferred_probe_work_func+0x130/0x1a8\n process_one_work+0x4c8/0x970\n worker_thread+0x5c8/0xaec\n kthread+0x1f8/0x220\n ret_from_fork+0x10/0x18\n\nAllocated by task 1:\n ____kasan_kmalloc+0xd4/0x114\n __kasan_kmalloc+0x10/0x1c\n kmem_cache_alloc_trace+0xe4/0x3d4\n __iommu_probe_device+0x90/0x394\n probe_iommu_group+0x70/0x9c\n bus_for_each_dev+0x11c/0x19c\n bus_iommu_probe+0xb8/0x7d4\n bus_set_iommu+0xcc/0x13c\n arm_smmu_bus_init+0x44/0x130 [arm_smmu]\n arm_smmu_device_probe+0xb88/0xc54 [arm_smmu]\n platform_drv_probe+0xe4/0x13c\n really_probe+0x2c8/0xb74\n driver_probe_device+0x11c/0x228\n device_driver_attach+0xf0/0x16c\n __driver_attach+0x80/0x320\n bus_for_each_dev+0x11c/0x19c\n driver_attach+0x38/0x48\n bus_add_driver+0x1dc/0x3a4\n driver_register+0x18c/0x244\n __platform_driver_register+0x88/0x9c\n init_module+0x64/0xff4 [arm_smmu]\n do_one_initcall+0x17c/0x2f0\n do_init_module+0xe8/0x378\n load_module+0x3f80/0x4a40\n __se_sys_finit_module+0x1a0/0x1e4\n __arm64_sys_finit_module+0x44/0x58\n el0_svc_common+0x100/0x264\n do_el0_svc+0x38/0xa4\n el0_svc+0x20/0x30\n el0_sync_handler+0x68/0xac\n el0_sync+0x160/0x180\n\nFreed by task 1:\n kasan_set_track+0x4c/0x84\n kasan_set_free_info+0x28/0x4c\n ____kasan_slab_free+0x120/0x15c\n __kasan_slab_free+0x18/0x28\n slab_free_freelist_hook+0x204/0x2fc\n kfree+0xfc/0x3a4\n __iommu_probe_device+0x284/0x394\n probe_iommu_group+0x70/0x9c\n bus_for_each_dev+0x11c/0x19c\n bus_iommu_probe+0xb8/0x7d4\n bus_set_iommu+0xcc/0x13c\n arm_smmu_bus_init+0x44/0x130 [arm_smmu]\n arm_smmu_device_probe+0xb88/0xc54 [arm_smmu]\n platform_drv_probe+0xe4/0x13c\n really_probe+0x2c8/0xb74\n driver_probe_device+0x11c/0x228\n device_driver_attach+0xf0/0x16c\n __driver_attach+0x80/0x320\n bus_for_each_dev+0x11c/0x19c\n driver_attach+0x38/0x48\n bus_add_driver+0x1dc/0x3a4\n driver_register+0x18c/0x244\n __platform_driver_register+0x88/0x9c\n init_module+0x64/0xff4 [arm_smmu]\n do_one_initcall+0x17c/0x2f0\n do_init_module+0xe8/0x378\n load_module+0x3f80/0x4a40\n __se_sys_finit_module+0x1a0/0x1e4\n __arm64_sys_finit_module+0x44/0x58\n el0_svc_common+0x100/0x264\n do_el0_svc+0x38/0xa4\n el0_svc+0x20/0x30\n el0_sync_handler+0x68/0xac\n el0_sync+0x160/0x180\n\nFix this by setting dev-\u003eiommu to NULL first and\nthen freeing dev_iommu structure in dev_iommu_free\nfunction."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T18:47:15.766Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cb86e511e78e796de6947b8f3acca1b7c76fb2ff"
        },
        {
          "url": "https://git.kernel.org/stable/c/65ab30f6a6952fa9ee13009862736cf8d110e6e5"
        },
        {
          "url": "https://git.kernel.org/stable/c/f74fc4b5bd533ea3d30ce47cccb8ef8d21fda85a"
        },
        {
          "url": "https://git.kernel.org/stable/c/b54240ad494300ff0994c4539a531727874381f4"
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      ],
      "title": "iommu: Fix potential use-after-free during probe",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48796",
    "datePublished": "2024-07-16T11:43:50.796Z",
    "dateReserved": "2024-07-16T11:38:08.895Z",
    "dateUpdated": "2026-05-11T18:47:15.766Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-48796",
      "date": "2026-06-06",
      "epss": "0.00019",
      "percentile": "0.05243"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48796\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-16T12:15:04.293\",\"lastModified\":\"2025-01-10T19:06:40.740\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommu: Fix potential use-after-free during probe\\n\\nKasan has reported the following use after free on dev-\u003eiommu.\\nwhen a device probe fails and it is in process of freeing dev-\u003eiommu\\nin dev_iommu_free function, a deferred_probe_work_func runs in parallel\\nand tries to access dev-\u003eiommu-\u003efwspec in of_iommu_configure path thus\\ncausing use after free.\\n\\nBUG: KASAN: use-after-free in of_iommu_configure+0xb4/0x4a4\\nRead of size 8 at addr ffffff87a2f1acb8 by task kworker/u16:2/153\\n\\nWorkqueue: events_unbound deferred_probe_work_func\\nCall trace:\\n dump_backtrace+0x0/0x33c\\n show_stack+0x18/0x24\\n dump_stack_lvl+0x16c/0x1e0\\n print_address_description+0x84/0x39c\\n __kasan_report+0x184/0x308\\n kasan_report+0x50/0x78\\n __asan_load8+0xc0/0xc4\\n of_iommu_configure+0xb4/0x4a4\\n of_dma_configure_id+0x2fc/0x4d4\\n platform_dma_configure+0x40/0x5c\\n really_probe+0x1b4/0xb74\\n driver_probe_device+0x11c/0x228\\n __device_attach_driver+0x14c/0x304\\n bus_for_each_drv+0x124/0x1b0\\n __device_attach+0x25c/0x334\\n device_initial_probe+0x24/0x34\\n bus_probe_device+0x78/0x134\\n deferred_probe_work_func+0x130/0x1a8\\n process_one_work+0x4c8/0x970\\n worker_thread+0x5c8/0xaec\\n kthread+0x1f8/0x220\\n ret_from_fork+0x10/0x18\\n\\nAllocated by task 1:\\n ____kasan_kmalloc+0xd4/0x114\\n __kasan_kmalloc+0x10/0x1c\\n kmem_cache_alloc_trace+0xe4/0x3d4\\n __iommu_probe_device+0x90/0x394\\n probe_iommu_group+0x70/0x9c\\n bus_for_each_dev+0x11c/0x19c\\n bus_iommu_probe+0xb8/0x7d4\\n bus_set_iommu+0xcc/0x13c\\n arm_smmu_bus_init+0x44/0x130 [arm_smmu]\\n arm_smmu_device_probe+0xb88/0xc54 [arm_smmu]\\n platform_drv_probe+0xe4/0x13c\\n really_probe+0x2c8/0xb74\\n driver_probe_device+0x11c/0x228\\n device_driver_attach+0xf0/0x16c\\n __driver_attach+0x80/0x320\\n bus_for_each_dev+0x11c/0x19c\\n driver_attach+0x38/0x48\\n bus_add_driver+0x1dc/0x3a4\\n driver_register+0x18c/0x244\\n __platform_driver_register+0x88/0x9c\\n init_module+0x64/0xff4 [arm_smmu]\\n do_one_initcall+0x17c/0x2f0\\n do_init_module+0xe8/0x378\\n load_module+0x3f80/0x4a40\\n __se_sys_finit_module+0x1a0/0x1e4\\n __arm64_sys_finit_module+0x44/0x58\\n el0_svc_common+0x100/0x264\\n do_el0_svc+0x38/0xa4\\n el0_svc+0x20/0x30\\n el0_sync_handler+0x68/0xac\\n el0_sync+0x160/0x180\\n\\nFreed by task 1:\\n kasan_set_track+0x4c/0x84\\n kasan_set_free_info+0x28/0x4c\\n ____kasan_slab_free+0x120/0x15c\\n __kasan_slab_free+0x18/0x28\\n slab_free_freelist_hook+0x204/0x2fc\\n kfree+0xfc/0x3a4\\n __iommu_probe_device+0x284/0x394\\n probe_iommu_group+0x70/0x9c\\n bus_for_each_dev+0x11c/0x19c\\n bus_iommu_probe+0xb8/0x7d4\\n bus_set_iommu+0xcc/0x13c\\n arm_smmu_bus_init+0x44/0x130 [arm_smmu]\\n arm_smmu_device_probe+0xb88/0xc54 [arm_smmu]\\n platform_drv_probe+0xe4/0x13c\\n really_probe+0x2c8/0xb74\\n driver_probe_device+0x11c/0x228\\n device_driver_attach+0xf0/0x16c\\n __driver_attach+0x80/0x320\\n bus_for_each_dev+0x11c/0x19c\\n driver_attach+0x38/0x48\\n bus_add_driver+0x1dc/0x3a4\\n driver_register+0x18c/0x244\\n __platform_driver_register+0x88/0x9c\\n init_module+0x64/0xff4 [arm_smmu]\\n do_one_initcall+0x17c/0x2f0\\n do_init_module+0xe8/0x378\\n load_module+0x3f80/0x4a40\\n __se_sys_finit_module+0x1a0/0x1e4\\n __arm64_sys_finit_module+0x44/0x58\\n el0_svc_common+0x100/0x264\\n do_el0_svc+0x38/0xa4\\n el0_svc+0x20/0x30\\n el0_sync_handler+0x68/0xac\\n el0_sync+0x160/0x180\\n\\nFix this by setting dev-\u003eiommu to NULL first and\\nthen freeing dev_iommu structure in dev_iommu_free\\nfunction.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: iommu: corrige el posible use-after-free durante la prueba Kasan ha informado el siguiente use-after-free en dev-\u0026gt;iommu. cuando falla la sonda de un dispositivo y est\u00e1 en proceso de liberar dev-\u0026gt;iommu en la funci\u00f3n dev_iommu_free, una deferred_probe_work_func se ejecuta en paralelo e intenta acceder a dev-\u0026gt;iommu-\u0026gt;fwspec en la ruta of_iommu_configure, lo que provoca el use-after-free. ERROR: KASAN: use-after-free en of_iommu_configure+0xb4/0x4a4 Lectura de tama\u00f1o 8 en la direcci\u00f3n ffffff87a2f1acb8 por tarea kworker/u16:2/153 Cola de trabajo: events_unbound deferred_probe_work_func Seguimiento de llamadas: dump_backtrace+0x0/0x33c show_stack+0x18/0x24 dump_stack_ nivel+ 0x16c/0x1e0 print_address_description+0x84/0x39c __kasan_report+0x184/0x308 kasan_report+0x50/0x78 __asan_load8+0xc0/0xc4 of_iommu_configure+0xb4/0x4a4 of_dma_configure_id+0x2fc/0x4d4 platform_ dma_configure+0x40/0x5c very_probe+0x1b4/0xb74 driver_probe_device+0x11c/0x228 __device_attach_driver+ 6 970 work_thread+0x5c8/0xaec kthread+0x1f8/0x220 ret_from_fork+0x10/0x18 Asignado por tarea 1: ____kasan_kmalloc+0xd4/0x114 __kasan_kmalloc+0x10/0x1c kmem_cache_alloc_trace+0xe4/0x3d4 __iommu_probe_device+0x90/0x394 probe_iommu_group+0x70/0x9c bus_for_each_dev+0x11c/0x19c bus_ iommu_probe+0xb8/0x7d4 bus_set_iommu+0xcc/0x13c arm_smmu_bus_init+0x44/0x130 [arm_smmu ] arm_smmu_device_probe+0xb88/0xc54 [arm_smmu] platform_drv_probe+0xe4/0x13c very_probe+0x2c8/0xb74 driver_probe_device+0x11c/0x228 dispositivo_driver_attach+0xf0/0x16c __driver_attach+0x80/0x320 _for_each_dev+0x11c/0x19c driver_attach+0x38/0x48 bus_add_driver+0x1dc/0x3a4 driver_register +0x18c/0x244 __platform_driver_register+0x88/0x9c init_module+0x64/0xff4 [arm_smmu] do_one_initcall+0x17c/0x2f0 do_init_module+0xe8/0x378 load_module+0x3f80/0x4a40 __se_sys_finit_module+ 0x1a0/0x1e4 __arm64_sys_finit_module+0x44/0x58 el0_svc_common+0x100/0x264 do_el0_svc+0x38 /0xa4 el0_svc+0x20/0x30 el0_sync_handler+0x68/0xac el0_sync+0x160/0x180 Liberado por la tarea 1: kasan_set_track+0x4c/0x84 kasan_set_free_info+0x28/0x4c ____kasan_slab_free+0x120/0x15c 0x18/0x28 slab_free_freelist_hook+0x204/0x2fc kfree+0xfc /0x3a4 __iommu_probe_device+0x284/0x394 probe_iommu_group+0x70/0x9c bus_for_each_dev+0x11c/0x19c bus_iommu_probe+0xb8/0x7d4 bus_set_iommu+0xcc/0x13c arm_smmu_bus_init+0x44/0x130 [arm_smmu] arm_smmu_device_probe+0xb88/0xc54 [arm_smmu] platform_drv_probe+0xe4/0x13c realmente_probe+ 0x2c8/0xb74 driver_probe_device+0x11c/0x228 dispositivo_driver_attach+0xf0/0x16c __driver_attach+0x80/0x320 bus_for_each_dev+0x11c/0x19c driver_attach+0x38/0x48 bus_add_driver+0x1dc/0x3a4 ister+0x18c/0x244 __platform_driver_register+0x88/0x9c init_module+0x64/0xff4 [arm_smmu ] do_one_initcall+0x17c/0x2f0 do_init_module+0xe8/0x378 load_module+0x3f80/0x4a40 __se_sys_finit_module+0x1a0/0x1e4 __arm64_sys_finit_module+0x44/0x58 el0_svc_common+0x100/ 0x264 do_el0_svc+0x38/0xa4 el0_svc+0x20/0x30 el0_sync_handler+0x68/0xac el0_sync+0x160/ 0x180 Solucione este problema configurando dev-\u0026gt;iommu en NULL primero y luego liberando la estructura dev_iommu en la funci\u00f3n dev_iommu_free.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.7\",\"versionEndExcluding\":\"5.10.101\",\"matchCriteriaId\":\"432EF7FE-42B1-408E-A4B7-82448815F521\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.24\",\"matchCriteriaId\":\"866451F0-299E-416C-B0B8-AE6B33E62CCA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.10\",\"matchCriteriaId\":\"679523BA-1392-404B-AB85-F5A5408B1ECC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7BD5F8D9-54FA-4CB0-B4F0-CB0471FDDB2D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"E6E34B23-78B4-4516-9BD8-61B33F4AC49A\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/65ab30f6a6952fa9ee13009862736cf8d110e6e5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b54240ad494300ff0994c4539a531727874381f4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cb86e511e78e796de6947b8f3acca1b7c76fb2ff\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f74fc4b5bd533ea3d30ce47cccb8ef8d21fda85a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/65ab30f6a6952fa9ee13009862736cf8d110e6e5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b54240ad494300ff0994c4539a531727874381f4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cb86e511e78e796de6947b8f3acca1b7c76fb2ff\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f74fc4b5bd533ea3d30ce47cccb8ef8d21fda85a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/cb86e511e78e796de6947b8f3acca1b7c76fb2ff\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/65ab30f6a6952fa9ee13009862736cf8d110e6e5\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/f74fc4b5bd533ea3d30ce47cccb8ef8d21fda85a\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/b54240ad494300ff0994c4539a531727874381f4\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T15:25:01.525Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-48796\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T16:59:19.404709Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:21.593Z\"}}], \"cna\": {\"title\": \"iommu: Fix potential use-after-free during probe\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"0c830e6b32826311fc2b9ea1f4679be0f4ef0933\", \"lessThan\": \"cb86e511e78e796de6947b8f3acca1b7c76fb2ff\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c830e6b32826311fc2b9ea1f4679be0f4ef0933\", \"lessThan\": \"65ab30f6a6952fa9ee13009862736cf8d110e6e5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c830e6b32826311fc2b9ea1f4679be0f4ef0933\", \"lessThan\": \"f74fc4b5bd533ea3d30ce47cccb8ef8d21fda85a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0c830e6b32826311fc2b9ea1f4679be0f4ef0933\", \"lessThan\": \"b54240ad494300ff0994c4539a531727874381f4\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/iommu/iommu.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.3\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.3\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.101\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.24\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/iommu/iommu.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/cb86e511e78e796de6947b8f3acca1b7c76fb2ff\"}, {\"url\": \"https://git.kernel.org/stable/c/65ab30f6a6952fa9ee13009862736cf8d110e6e5\"}, {\"url\": \"https://git.kernel.org/stable/c/f74fc4b5bd533ea3d30ce47cccb8ef8d21fda85a\"}, {\"url\": \"https://git.kernel.org/stable/c/b54240ad494300ff0994c4539a531727874381f4\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommu: Fix potential use-after-free during probe\\n\\nKasan has reported the following use after free on dev-\u003eiommu.\\nwhen a device probe fails and it is in process of freeing dev-\u003eiommu\\nin dev_iommu_free function, a deferred_probe_work_func runs in parallel\\nand tries to access dev-\u003eiommu-\u003efwspec in of_iommu_configure path thus\\ncausing use after free.\\n\\nBUG: KASAN: use-after-free in of_iommu_configure+0xb4/0x4a4\\nRead of size 8 at addr ffffff87a2f1acb8 by task kworker/u16:2/153\\n\\nWorkqueue: events_unbound deferred_probe_work_func\\nCall trace:\\n dump_backtrace+0x0/0x33c\\n show_stack+0x18/0x24\\n dump_stack_lvl+0x16c/0x1e0\\n print_address_description+0x84/0x39c\\n __kasan_report+0x184/0x308\\n kasan_report+0x50/0x78\\n __asan_load8+0xc0/0xc4\\n of_iommu_configure+0xb4/0x4a4\\n of_dma_configure_id+0x2fc/0x4d4\\n platform_dma_configure+0x40/0x5c\\n really_probe+0x1b4/0xb74\\n driver_probe_device+0x11c/0x228\\n __device_attach_driver+0x14c/0x304\\n bus_for_each_drv+0x124/0x1b0\\n __device_attach+0x25c/0x334\\n device_initial_probe+0x24/0x34\\n bus_probe_device+0x78/0x134\\n deferred_probe_work_func+0x130/0x1a8\\n process_one_work+0x4c8/0x970\\n worker_thread+0x5c8/0xaec\\n kthread+0x1f8/0x220\\n ret_from_fork+0x10/0x18\\n\\nAllocated by task 1:\\n ____kasan_kmalloc+0xd4/0x114\\n __kasan_kmalloc+0x10/0x1c\\n kmem_cache_alloc_trace+0xe4/0x3d4\\n __iommu_probe_device+0x90/0x394\\n probe_iommu_group+0x70/0x9c\\n bus_for_each_dev+0x11c/0x19c\\n bus_iommu_probe+0xb8/0x7d4\\n bus_set_iommu+0xcc/0x13c\\n arm_smmu_bus_init+0x44/0x130 [arm_smmu]\\n arm_smmu_device_probe+0xb88/0xc54 [arm_smmu]\\n platform_drv_probe+0xe4/0x13c\\n really_probe+0x2c8/0xb74\\n driver_probe_device+0x11c/0x228\\n device_driver_attach+0xf0/0x16c\\n __driver_attach+0x80/0x320\\n bus_for_each_dev+0x11c/0x19c\\n driver_attach+0x38/0x48\\n bus_add_driver+0x1dc/0x3a4\\n driver_register+0x18c/0x244\\n __platform_driver_register+0x88/0x9c\\n init_module+0x64/0xff4 [arm_smmu]\\n do_one_initcall+0x17c/0x2f0\\n do_init_module+0xe8/0x378\\n load_module+0x3f80/0x4a40\\n __se_sys_finit_module+0x1a0/0x1e4\\n __arm64_sys_finit_module+0x44/0x58\\n el0_svc_common+0x100/0x264\\n do_el0_svc+0x38/0xa4\\n el0_svc+0x20/0x30\\n el0_sync_handler+0x68/0xac\\n el0_sync+0x160/0x180\\n\\nFreed by task 1:\\n kasan_set_track+0x4c/0x84\\n kasan_set_free_info+0x28/0x4c\\n ____kasan_slab_free+0x120/0x15c\\n __kasan_slab_free+0x18/0x28\\n slab_free_freelist_hook+0x204/0x2fc\\n kfree+0xfc/0x3a4\\n __iommu_probe_device+0x284/0x394\\n probe_iommu_group+0x70/0x9c\\n bus_for_each_dev+0x11c/0x19c\\n bus_iommu_probe+0xb8/0x7d4\\n bus_set_iommu+0xcc/0x13c\\n arm_smmu_bus_init+0x44/0x130 [arm_smmu]\\n arm_smmu_device_probe+0xb88/0xc54 [arm_smmu]\\n platform_drv_probe+0xe4/0x13c\\n really_probe+0x2c8/0xb74\\n driver_probe_device+0x11c/0x228\\n device_driver_attach+0xf0/0x16c\\n __driver_attach+0x80/0x320\\n bus_for_each_dev+0x11c/0x19c\\n driver_attach+0x38/0x48\\n bus_add_driver+0x1dc/0x3a4\\n driver_register+0x18c/0x244\\n __platform_driver_register+0x88/0x9c\\n init_module+0x64/0xff4 [arm_smmu]\\n do_one_initcall+0x17c/0x2f0\\n do_init_module+0xe8/0x378\\n load_module+0x3f80/0x4a40\\n __se_sys_finit_module+0x1a0/0x1e4\\n __arm64_sys_finit_module+0x44/0x58\\n el0_svc_common+0x100/0x264\\n do_el0_svc+0x38/0xa4\\n el0_svc+0x20/0x30\\n el0_sync_handler+0x68/0xac\\n el0_sync+0x160/0x180\\n\\nFix this by setting dev-\u003eiommu to NULL first and\\nthen freeing dev_iommu structure in dev_iommu_free\\nfunction.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.101\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.24\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.10\", \"versionStartIncluding\": \"5.3\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17\", \"versionStartIncluding\": \"5.3\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T18:47:15.766Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48796\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T18:47:15.766Z\", \"dateReserved\": \"2024-07-16T11:38:08.895Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-16T11:43:50.796Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.