cve-2024-26786
Vulnerability from cvelistv5
Published
2024-04-04 08:20
Modified
2024-08-02 00:14
Severity
Summary
iommufd: Fix iopt_access_list_id overwrite bug
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9526a46cc0c378d381560279bea9aa34c84298a0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aeb004c0cd6958e910123a1607634401009c9539
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f1fb745ee0a6fe43f1d84ec369c7e6af2310fda9
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
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    "datePublished": "2024-04-04T08:20:19.109Z",
    "dateReserved": "2024-02-19T14:20:24.178Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26786\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-04T09:15:08.247\",\"lastModified\":\"2024-04-04T12:48:41.700\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommufd: Fix iopt_access_list_id overwrite bug\\n\\nSyzkaller reported the following WARN_ON:\\n  WARNING: CPU: 1 PID: 4738 at drivers/iommu/iommufd/io_pagetable.c:1360\\n\\n  Call Trace:\\n   iommufd_access_change_ioas+0x2fe/0x4e0\\n   iommufd_access_destroy_object+0x50/0xb0\\n   iommufd_object_remove+0x2a3/0x490\\n   iommufd_object_destroy_user\\n   iommufd_access_destroy+0x71/0xb0\\n   iommufd_test_staccess_release+0x89/0xd0\\n   __fput+0x272/0xb50\\n   __fput_sync+0x4b/0x60\\n   __do_sys_close\\n   __se_sys_close\\n   __x64_sys_close+0x8b/0x110\\n   do_syscall_x64\\n\\nThe mismatch between the access pointer in the list and the passed-in\\npointer is resulting from an overwrite of access-\u003eiopt_access_list_id, in\\niopt_add_access(). Called from iommufd_access_change_ioas() when\\nxa_alloc() succeeds but iopt_calculate_iova_alignment() fails.\\n\\nAdd a new_id in iopt_add_access() and only update iopt_access_list_id when\\nreturning successfully.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: iommufd: corrige el error de sobrescritura de iopt_access_list_id Syzkaller inform\u00f3 lo siguiente WARN_ON: ADVERTENCIA: CPU: 1 PID: 4738 en drivers/iommu/iommufd/io_pagetable.c:1360 Seguimiento de llamadas: iommufd_access_change_ioas+0x2fe /0x4e0 iommufd_access_destroy_object+0x50/0xb0 iommufd_object_remove+0x2a3/0x490 iommufd_object_destroy_user iommufd_access_destroy+0x71/0xb0 iommufd_test_staccess_release+0x89/0xd0 __fput+0x272/0x b50 __fput_sync+0x4b/0x60 __do_sys_close __se_sys_close __x64_sys_close+0x8b/0x110 do_syscall_x64 La falta de coincidencia entre el puntero de acceso en la lista y el puntero pasado resulta de una sobrescritura de acceso-\u0026gt;iopt_access_list_id, en iopt_add_access(). Llamado desde iommufd_access_change_ioas() cuando xa_alloc() tiene \u00e9xito pero iopt_calculate_iova_alignment() falla. Agregue un new_id en iopt_add_access() y actualice solo iopt_access_list_id cuando regrese exitosamente.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/9526a46cc0c378d381560279bea9aa34c84298a0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/aeb004c0cd6958e910123a1607634401009c9539\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f1fb745ee0a6fe43f1d84ec369c7e6af2310fda9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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