gsd-2021-46959
Vulnerability from gsd
Modified
2024-02-28 06:03
Details
In the Linux kernel, the following vulnerability has been resolved: spi: Fix use-after-free with devm_spi_alloc_* We can't rely on the contents of the devres list during spi_unregister_controller(), as the list is already torn down at the time we perform devres_find() for devm_spi_release_controller. This causes devices registered with devm_spi_alloc_{master,slave}() to be mistakenly identified as legacy, non-devm managed devices and have their reference counters decremented below 0. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 660 at lib/refcount.c:28 refcount_warn_saturate+0x108/0x174 [<b0396f04>] (refcount_warn_saturate) from [<b03c56a4>] (kobject_put+0x90/0x98) [<b03c5614>] (kobject_put) from [<b0447b4c>] (put_device+0x20/0x24) r4:b6700140 [<b0447b2c>] (put_device) from [<b07515e8>] (devm_spi_release_controller+0x3c/0x40) [<b07515ac>] (devm_spi_release_controller) from [<b045343c>] (release_nodes+0x84/0xc4) r5:b6700180 r4:b6700100 [<b04533b8>] (release_nodes) from [<b0454160>] (devres_release_all+0x5c/0x60) r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10 [<b0454104>] (devres_release_all) from [<b044e41c>] (__device_release_driver+0x144/0x1ec) r5:b117ad94 r4:b163dc10 [<b044e2d8>] (__device_release_driver) from [<b044f70c>] (device_driver_detach+0x84/0xa0) r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10 [<b044f688>] (device_driver_detach) from [<b044d274>] (unbind_store+0xe4/0xf8) Instead, determine the devm allocation state as a flag on the controller which is guaranteed to be stable during cleanup.
Aliases


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{
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2021-46959",
         ],
         details: "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: Fix use-after-free with devm_spi_alloc_*\n\nWe can't rely on the contents of the devres list during\nspi_unregister_controller(), as the list is already torn down at the\ntime we perform devres_find() for devm_spi_release_controller. This\ncauses devices registered with devm_spi_alloc_{master,slave}() to be\nmistakenly identified as legacy, non-devm managed devices and have their\nreference counters decremented below 0.\n\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 660 at lib/refcount.c:28 refcount_warn_saturate+0x108/0x174\n[<b0396f04>] (refcount_warn_saturate) from [<b03c56a4>] (kobject_put+0x90/0x98)\n[<b03c5614>] (kobject_put) from [<b0447b4c>] (put_device+0x20/0x24)\n r4:b6700140\n[<b0447b2c>] (put_device) from [<b07515e8>] (devm_spi_release_controller+0x3c/0x40)\n[<b07515ac>] (devm_spi_release_controller) from [<b045343c>] (release_nodes+0x84/0xc4)\n r5:b6700180 r4:b6700100\n[<b04533b8>] (release_nodes) from [<b0454160>] (devres_release_all+0x5c/0x60)\n r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10\n[<b0454104>] (devres_release_all) from [<b044e41c>] (__device_release_driver+0x144/0x1ec)\n r5:b117ad94 r4:b163dc10\n[<b044e2d8>] (__device_release_driver) from [<b044f70c>] (device_driver_detach+0x84/0xa0)\n r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10\n[<b044f688>] (device_driver_detach) from [<b044d274>] (unbind_store+0xe4/0xf8)\n\nInstead, determine the devm allocation state as a flag on the\ncontroller which is guaranteed to be stable during cleanup.",
         id: "GSD-2021-46959",
         modified: "2024-02-28T06:03:57.825134Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "cve@kernel.org",
            ID: "CVE-2021-46959",
            STATE: "PUBLIC",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "Linux",
                              version: {
                                 version_data: [
                                    {
                                       version_affected: "<",
                                       version_name: "a4add022c155",
                                       version_value: "62bb2c7f2411",
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                                    {
                                       version_affected: "<",
                                       version_name: "0870525cf94b",
                                       version_value: "8bf96425c90f",
                                    },
                                    {
                                       version_affected: "<",
                                       version_name: "8c45a1c6c951",
                                       version_value: "8e029707f50a",
                                    },
                                    {
                                       version_affected: "<",
                                       version_name: "234b432c7b61",
                                       version_value: "28a5529068c5",
                                    },
                                    {
                                       version_affected: "<",
                                       version_name: "3e04a4976add",
                                       version_value: "001c8e83646a",
                                    },
                                    {
                                       version_affected: "<",
                                       version_name: "5e844cc37a5c",
                                       version_value: "c7fabe372a90",
                                    },
                                    {
                                       version_value: "not down converted",
                                       x_cve_json_5_version_data: {
                                          defaultStatus: "affected",
                                          versions: [
                                             {
                                                status: "affected",
                                                version: "5.10",
                                             },
                                             {
                                                lessThan: "5.10",
                                                status: "unaffected",
                                                version: "0",
                                                versionType: "custom",
                                             },
                                             {
                                                lessThanOrEqual: "4.4.*",
                                                status: "unaffected",
                                                version: "4.4.271",
                                                versionType: "custom",
                                             },
                                             {
                                                lessThanOrEqual: "4.9.*",
                                                status: "unaffected",
                                                version: "4.9.271",
                                                versionType: "custom",
                                             },
                                             {
                                                lessThanOrEqual: "4.14.*",
                                                status: "unaffected",
                                                version: "4.14.233",
                                                versionType: "custom",
                                             },
                                             {
                                                lessThanOrEqual: "4.19.*",
                                                status: "unaffected",
                                                version: "4.19.191",
                                                versionType: "custom",
                                             },
                                             {
                                                lessThanOrEqual: "5.4.*",
                                                status: "unaffected",
                                                version: "5.4.119",
                                                versionType: "custom",
                                             },
                                             {
                                                lessThanOrEqual: "5.10.*",
                                                status: "unaffected",
                                                version: "5.10.37",
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                                             },
                                             {
                                                lessThanOrEqual: "5.11.*",
                                                status: "unaffected",
                                                version: "5.11.21",
                                                versionType: "custom",
                                             },
                                             {
                                                lessThanOrEqual: "5.12.*",
                                                status: "unaffected",
                                                version: "5.12.4",
                                                versionType: "custom",
                                             },
                                             {
                                                lessThanOrEqual: "*",
                                                status: "unaffected",
                                                version: "5.13",
                                                versionType: "original_commit_for_fix",
                                             },
                                          ],
                                       },
                                    },
                                 ],
                              },
                           },
                        ],
                     },
                     vendor_name: "Linux",
                  },
               ],
            },
         },
         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
               {
                  lang: "eng",
                  value: "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: Fix use-after-free with devm_spi_alloc_*\n\nWe can't rely on the contents of the devres list during\nspi_unregister_controller(), as the list is already torn down at the\ntime we perform devres_find() for devm_spi_release_controller. This\ncauses devices registered with devm_spi_alloc_{master,slave}() to be\nmistakenly identified as legacy, non-devm managed devices and have their\nreference counters decremented below 0.\n\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 660 at lib/refcount.c:28 refcount_warn_saturate+0x108/0x174\n[<b0396f04>] (refcount_warn_saturate) from [<b03c56a4>] (kobject_put+0x90/0x98)\n[<b03c5614>] (kobject_put) from [<b0447b4c>] (put_device+0x20/0x24)\n r4:b6700140\n[<b0447b2c>] (put_device) from [<b07515e8>] (devm_spi_release_controller+0x3c/0x40)\n[<b07515ac>] (devm_spi_release_controller) from [<b045343c>] (release_nodes+0x84/0xc4)\n r5:b6700180 r4:b6700100\n[<b04533b8>] (release_nodes) from [<b0454160>] (devres_release_all+0x5c/0x60)\n r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10\n[<b0454104>] (devres_release_all) from [<b044e41c>] (__device_release_driver+0x144/0x1ec)\n r5:b117ad94 r4:b163dc10\n[<b044e2d8>] (__device_release_driver) from [<b044f70c>] (device_driver_detach+0x84/0xa0)\n r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10\n[<b044f688>] (device_driver_detach) from [<b044d274>] (unbind_store+0xe4/0xf8)\n\nInstead, determine the devm allocation state as a flag on the\ncontroller which is guaranteed to be stable during cleanup.",
               },
            ],
         },
         generator: {
            engine: "bippy-5f0117140d9a",
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        lang: "eng",
                        value: "n/a",
                     },
                  ],
               },
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         },
         references: {
            reference_data: [
               {
                  name: "https://git.kernel.org/stable/c/62bb2c7f2411a0045c24831f11ecacfc35610815",
                  refsource: "MISC",
                  url: "https://git.kernel.org/stable/c/62bb2c7f2411a0045c24831f11ecacfc35610815",
               },
               {
                  name: "https://git.kernel.org/stable/c/8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e",
                  refsource: "MISC",
                  url: "https://git.kernel.org/stable/c/8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e",
               },
               {
                  name: "https://git.kernel.org/stable/c/8e029707f50a82c53172359c686b2536ab54e58c",
                  refsource: "MISC",
                  url: "https://git.kernel.org/stable/c/8e029707f50a82c53172359c686b2536ab54e58c",
               },
               {
                  name: "https://git.kernel.org/stable/c/28a5529068c51cdf0295ab1e11a99a3a909a03e4",
                  refsource: "MISC",
                  url: "https://git.kernel.org/stable/c/28a5529068c51cdf0295ab1e11a99a3a909a03e4",
               },
               {
                  name: "https://git.kernel.org/stable/c/001c8e83646ad3b847b18f6ac55a54367d917d74",
                  refsource: "MISC",
                  url: "https://git.kernel.org/stable/c/001c8e83646ad3b847b18f6ac55a54367d917d74",
               },
               {
                  name: "https://git.kernel.org/stable/c/c7fabe372a9031acd00498bc718ce27c253abfd1",
                  refsource: "MISC",
                  url: "https://git.kernel.org/stable/c/c7fabe372a9031acd00498bc718ce27c253abfd1",
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               {
                  name: "https://git.kernel.org/stable/c/cee78aa24578edac8cf00513dca618c0acc17cd7",
                  refsource: "MISC",
                  url: "https://git.kernel.org/stable/c/cee78aa24578edac8cf00513dca618c0acc17cd7",
               },
               {
                  name: "https://git.kernel.org/stable/c/8735248ebb918d25427965f0db07939ed0473ec6",
                  refsource: "MISC",
                  url: "https://git.kernel.org/stable/c/8735248ebb918d25427965f0db07939ed0473ec6",
               },
               {
                  name: "https://git.kernel.org/stable/c/794aaf01444d4e765e2b067cba01cc69c1c68ed9",
                  refsource: "MISC",
                  url: "https://git.kernel.org/stable/c/794aaf01444d4e765e2b067cba01cc69c1c68ed9",
               },
            ],
         },
      },
      "nvd.nist.gov": {
         cve: {
            descriptions: [
               {
                  lang: "en",
                  value: "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: Fix use-after-free with devm_spi_alloc_*\n\nWe can't rely on the contents of the devres list during\nspi_unregister_controller(), as the list is already torn down at the\ntime we perform devres_find() for devm_spi_release_controller. This\ncauses devices registered with devm_spi_alloc_{master,slave}() to be\nmistakenly identified as legacy, non-devm managed devices and have their\nreference counters decremented below 0.\n\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 660 at lib/refcount.c:28 refcount_warn_saturate+0x108/0x174\n[<b0396f04>] (refcount_warn_saturate) from [<b03c56a4>] (kobject_put+0x90/0x98)\n[<b03c5614>] (kobject_put) from [<b0447b4c>] (put_device+0x20/0x24)\n r4:b6700140\n[<b0447b2c>] (put_device) from [<b07515e8>] (devm_spi_release_controller+0x3c/0x40)\n[<b07515ac>] (devm_spi_release_controller) from [<b045343c>] (release_nodes+0x84/0xc4)\n r5:b6700180 r4:b6700100\n[<b04533b8>] (release_nodes) from [<b0454160>] (devres_release_all+0x5c/0x60)\n r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10\n[<b0454104>] (devres_release_all) from [<b044e41c>] (__device_release_driver+0x144/0x1ec)\n r5:b117ad94 r4:b163dc10\n[<b044e2d8>] (__device_release_driver) from [<b044f70c>] (device_driver_detach+0x84/0xa0)\n r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10\n[<b044f688>] (device_driver_detach) from [<b044d274>] (unbind_store+0xe4/0xf8)\n\nInstead, determine the devm allocation state as a flag on the\ncontroller which is guaranteed to be stable during cleanup.",
               },
               {
                  lang: "es",
                  value: " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: spi: corrige el Use-After-Free con devm_spi_alloc_* No podemos confiar en el contenido de la lista devres durante spi_unregister_controller(), ya que la lista ya está eliminada en ese momento. Realizamos devres_find() para devm_spi_release_controller. Esto hace que los dispositivos registrados con devm_spi_alloc_{master,slave}() se identifiquen erróneamente como dispositivos heredados, no administrados por devm y sus contadores de referencia disminuyan por debajo de 0. ------------[ cortar aquí ] ------------ ADVERTENCIA: CPU: 1 PID: 660 en lib/refcount.c:28 refcount_warn_saturate+0x108/0x174 [] (refcount_warn_saturate) de [] (kobject_put+ 0x90/0x98) [] (kobject_put) de [] (put_device+0x20/0x24) r4:b6700140 [] (put_device) de [] (devm_spi_release_controller+0x3c/0x40 ) [ ] (devm_spi_release_controller) de [] (release_nodes+0x84/0xc4) r5:b6700180 r4:b6700100 [] (release_nodes) de [] (devres_release_all+0x5c/0x6 0) r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10 [] (devres_release_all) de [] (__device_release_driver+0x144/0x1ec) r5:b117ad94 r4:b163dc10 [] (__device_release_driver) de [&lt; b044f70c&gt;] (device_driver_detach+0x84/0xa0) r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10 [] (device_driver_detach) de [ ] (unbind_store+0xe4/0xf8) en su lugar , determine el estado de asignación devm como un indicador en el controlador que se garantiza que será estable durante la limpieza.",
               },
            ],
            id: "CVE-2021-46959",
            lastModified: "2024-03-01T14:04:26.010",
            metrics: {},
            published: "2024-02-29T23:15:07.230",
            references: [
               {
                  source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                  url: "https://git.kernel.org/stable/c/001c8e83646ad3b847b18f6ac55a54367d917d74",
               },
               {
                  source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                  url: "https://git.kernel.org/stable/c/28a5529068c51cdf0295ab1e11a99a3a909a03e4",
               },
               {
                  source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                  url: "https://git.kernel.org/stable/c/62bb2c7f2411a0045c24831f11ecacfc35610815",
               },
               {
                  source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                  url: "https://git.kernel.org/stable/c/794aaf01444d4e765e2b067cba01cc69c1c68ed9",
               },
               {
                  source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                  url: "https://git.kernel.org/stable/c/8735248ebb918d25427965f0db07939ed0473ec6",
               },
               {
                  source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                  url: "https://git.kernel.org/stable/c/8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e",
               },
               {
                  source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                  url: "https://git.kernel.org/stable/c/8e029707f50a82c53172359c686b2536ab54e58c",
               },
               {
                  source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                  url: "https://git.kernel.org/stable/c/c7fabe372a9031acd00498bc718ce27c253abfd1",
               },
               {
                  source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                  url: "https://git.kernel.org/stable/c/cee78aa24578edac8cf00513dca618c0acc17cd7",
               },
            ],
            sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            vulnStatus: "Awaiting Analysis",
         },
      },
   },
}


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