cve-2024-36906
Vulnerability from cvelistv5
Published
2024-05-30 15:29
Modified
2024-11-05 09:27
Severity ?
Summary
ARM: 9381/1: kasan: clear stale stack poison
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/20ac71bee028ffbae4fc14ed679b23b4d3e95726
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ad702338fe423cb1e79745787090317256a98dab
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b26f353786d365e658cebc9a9ace88e04fc2325e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c4238686f9093b98bd6245a348bcf059cdce23af
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ee0ce7573e5083031960faf602c9db693ab5b477
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/20ac71bee028ffbae4fc14ed679b23b4d3e95726
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ad702338fe423cb1e79745787090317256a98dab
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b26f353786d365e658cebc9a9ace88e04fc2325e
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c4238686f9093b98bd6245a348bcf059cdce23af
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ee0ce7573e5083031960faf602c9db693ab5b477
Impacted products
Vendor Product Version
Linux Linux Version: 5.11
Show details on NVD website

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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nARM: 9381/1: kasan: clear stale stack poison\n\nWe found below OOB crash:\n\n[   33.452494] ==================================================================\n[   33.453513] BUG: KASAN: stack-out-of-bounds in refresh_cpu_vm_stats.constprop.0+0xcc/0x2ec\n[   33.454660] Write of size 164 at addr c1d03d30 by task swapper/0/0\n[   33.455515]\n[   33.455767] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G           O       6.1.25-mainline #1\n[   33.456880] Hardware name: Generic DT based system\n[   33.457555]  unwind_backtrace from show_stack+0x18/0x1c\n[   33.458326]  show_stack from dump_stack_lvl+0x40/0x4c\n[   33.459072]  dump_stack_lvl from print_report+0x158/0x4a4\n[   33.459863]  print_report from kasan_report+0x9c/0x148\n[   33.460616]  kasan_report from kasan_check_range+0x94/0x1a0\n[   33.461424]  kasan_check_range from memset+0x20/0x3c\n[   33.462157]  memset from refresh_cpu_vm_stats.constprop.0+0xcc/0x2ec\n[   33.463064]  refresh_cpu_vm_stats.constprop.0 from tick_nohz_idle_stop_tick+0x180/0x53c\n[   33.464181]  tick_nohz_idle_stop_tick from do_idle+0x264/0x354\n[   33.465029]  do_idle from cpu_startup_entry+0x20/0x24\n[   33.465769]  cpu_startup_entry from rest_init+0xf0/0xf4\n[   33.466528]  rest_init from arch_post_acpi_subsys_init+0x0/0x18\n[   33.467397]\n[   33.467644] The buggy address belongs to stack of task swapper/0/0\n[   33.468493]  and is located at offset 112 in frame:\n[   33.469172]  refresh_cpu_vm_stats.constprop.0+0x0/0x2ec\n[   33.469917]\n[   33.470165] This frame has 2 objects:\n[   33.470696]  [32, 76) \u0027global_zone_diff\u0027\n[   33.470729]  [112, 276) \u0027global_node_diff\u0027\n[   33.471294]\n[   33.472095] The buggy address belongs to the physical page:\n[   33.472862] page:3cd72da8 refcount:1 mapcount:0 mapping:00000000 index:0x0 pfn:0x41d03\n[   33.473944] flags: 0x1000(reserved|zone=0)\n[   33.474565] raw: 00001000 ed741470 ed741470 00000000 00000000 00000000 ffffffff 00000001\n[   33.475656] raw: 00000000\n[   33.476050] page dumped because: kasan: bad access detected\n[   33.476816]\n[   33.477061] Memory state around the buggy address:\n[   33.477732]  c1d03c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[   33.478630]  c1d03c80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00\n[   33.479526] \u003ec1d03d00: 00 04 f2 f2 f2 f2 00 00 00 00 00 00 f1 f1 f1 f1\n[   33.480415]                                                ^\n[   33.481195]  c1d03d80: 00 00 00 00 00 00 00 00 00 00 04 f3 f3 f3 f3 f3\n[   33.482088]  c1d03e00: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00\n[   33.482978] ==================================================================\n\nWe find the root cause of this OOB is that arm does not clear stale stack\npoison in the case of cpuidle.\n\nThis patch refer to arch/arm64/kernel/sleep.S to resolve this issue.\n\nFrom cited commit [1] that explain the problem\n\nFunctions which the compiler has instrumented for KASAN place poison on\nthe stack shadow upon entry and remove this poison prior to returning.\n\nIn the case of cpuidle, CPUs exit the kernel a number of levels deep in\nC code.  Any instrumented functions on this critical path will leave\nportions of the stack shadow poisoned.\n\nIf CPUs lose context and return to the kernel via a cold path, we\nrestore a prior context saved in __cpu_suspend_enter are forgotten, and\nwe never remove the poison they placed in the stack shadow area by\nfunctions calls between this and the actual exit of the kernel.\n\nThus, (depending on stackframe layout) subsequent calls to instrumented\nfunctions may hit this stale poison, resulting in (spurious) KASAN\nsplats to the console.\n\nTo avoid this, clear any stale poison from the idle thread for a CPU\nprior to bringing a CPU online.\n\nFrom cited commit [2]\n\nExtend to check for CONFIG_KASAN_STACK\n\n[1] commit 0d97e6d8024c (\"arm64: kasan: clear stale stack poison\")\n[2] commit d56a9ef84bd0 (\"kasan, arm64: unpoison stack only with CONFIG_KASAN_STACK\")"
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      "title": "ARM: 9381/1: kasan: clear stale stack poison",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-36906",
    "datePublished": "2024-05-30T15:29:06.620Z",
    "dateReserved": "2024-05-30T15:25:07.067Z",
    "dateUpdated": "2024-11-05T09:27:51.662Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-36906\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-30T16:15:14.130\",\"lastModified\":\"2024-11-21T09:22:47.157\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nARM: 9381/1: kasan: clear stale stack poison\\n\\nWe found below OOB crash:\\n\\n[   33.452494] ==================================================================\\n[   33.453513] BUG: KASAN: stack-out-of-bounds in refresh_cpu_vm_stats.constprop.0+0xcc/0x2ec\\n[   33.454660] Write of size 164 at addr c1d03d30 by task swapper/0/0\\n[   33.455515]\\n[   33.455767] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G           O       6.1.25-mainline #1\\n[   33.456880] Hardware name: Generic DT based system\\n[   33.457555]  unwind_backtrace from show_stack+0x18/0x1c\\n[   33.458326]  show_stack from dump_stack_lvl+0x40/0x4c\\n[   33.459072]  dump_stack_lvl from print_report+0x158/0x4a4\\n[   33.459863]  print_report from kasan_report+0x9c/0x148\\n[   33.460616]  kasan_report from kasan_check_range+0x94/0x1a0\\n[   33.461424]  kasan_check_range from memset+0x20/0x3c\\n[   33.462157]  memset from refresh_cpu_vm_stats.constprop.0+0xcc/0x2ec\\n[   33.463064]  refresh_cpu_vm_stats.constprop.0 from tick_nohz_idle_stop_tick+0x180/0x53c\\n[   33.464181]  tick_nohz_idle_stop_tick from do_idle+0x264/0x354\\n[   33.465029]  do_idle from cpu_startup_entry+0x20/0x24\\n[   33.465769]  cpu_startup_entry from rest_init+0xf0/0xf4\\n[   33.466528]  rest_init from arch_post_acpi_subsys_init+0x0/0x18\\n[   33.467397]\\n[   33.467644] The buggy address belongs to stack of task swapper/0/0\\n[   33.468493]  and is located at offset 112 in frame:\\n[   33.469172]  refresh_cpu_vm_stats.constprop.0+0x0/0x2ec\\n[   33.469917]\\n[   33.470165] This frame has 2 objects:\\n[   33.470696]  [32, 76) \u0027global_zone_diff\u0027\\n[   33.470729]  [112, 276) \u0027global_node_diff\u0027\\n[   33.471294]\\n[   33.472095] The buggy address belongs to the physical page:\\n[   33.472862] page:3cd72da8 refcount:1 mapcount:0 mapping:00000000 index:0x0 pfn:0x41d03\\n[   33.473944] flags: 0x1000(reserved|zone=0)\\n[   33.474565] raw: 00001000 ed741470 ed741470 00000000 00000000 00000000 ffffffff 00000001\\n[   33.475656] raw: 00000000\\n[   33.476050] page dumped because: kasan: bad access detected\\n[   33.476816]\\n[   33.477061] Memory state around the buggy address:\\n[   33.477732]  c1d03c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\\n[   33.478630]  c1d03c80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00\\n[   33.479526] \u003ec1d03d00: 00 04 f2 f2 f2 f2 00 00 00 00 00 00 f1 f1 f1 f1\\n[   33.480415]                                                ^\\n[   33.481195]  c1d03d80: 00 00 00 00 00 00 00 00 00 00 04 f3 f3 f3 f3 f3\\n[   33.482088]  c1d03e00: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00\\n[   33.482978] ==================================================================\\n\\nWe find the root cause of this OOB is that arm does not clear stale stack\\npoison in the case of cpuidle.\\n\\nThis patch refer to arch/arm64/kernel/sleep.S to resolve this issue.\\n\\nFrom cited commit [1] that explain the problem\\n\\nFunctions which the compiler has instrumented for KASAN place poison on\\nthe stack shadow upon entry and remove this poison prior to returning.\\n\\nIn the case of cpuidle, CPUs exit the kernel a number of levels deep in\\nC code.  Any instrumented functions on this critical path will leave\\nportions of the stack shadow poisoned.\\n\\nIf CPUs lose context and return to the kernel via a cold path, we\\nrestore a prior context saved in __cpu_suspend_enter are forgotten, and\\nwe never remove the poison they placed in the stack shadow area by\\nfunctions calls between this and the actual exit of the kernel.\\n\\nThus, (depending on stackframe layout) subsequent calls to instrumented\\nfunctions may hit this stale poison, resulting in (spurious) KASAN\\nsplats to the console.\\n\\nTo avoid this, clear any stale poison from the idle thread for a CPU\\nprior to bringing a CPU online.\\n\\nFrom cited commit [2]\\n\\nExtend to check for CONFIG_KASAN_STACK\\n\\n[1] commit 0d97e6d8024c (\\\"arm64: kasan: clear stale stack poison\\\")\\n[2] commit d56a9ef84bd0 (\\\"kasan, arm64: unpoison stack only with CONFIG_KASAN_STACK\\\")\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ARM: 9381/1: kasan: borrar veneno de pila obsoleta Encontramos el siguiente fallo de OOB: [33.452494] ================== =================================================== [ 33.453513] ERROR: KASAN: pila fuera de los l\u00edmites en refresco_cpu_vm_stats.constprop.0+0xcc/0x2ec [33.454660] Escritura de tama\u00f1o 164 en la direcci\u00f3n c1d03d30 mediante task swapper/0/0 [33.455515] [33.455767] CPU: 0 PID : 0 Comm: swapper/0 Tainted: GO 6.1.25-mainline #1 [ 33.456880] Nombre del hardware: Sistema basado en DT gen\u00e9rico [ 33.457555] unwind_backtrace from show_stack+0x18/0x1c [ 33.458326] show_stack from dump_stack_lvl+0x40/0x4c [ 33.45 9072] dump_stack_lvl de print_report+0x158/0x4a4 [ 33.459863] print_report de kasan_report+0x9c/0x148 [ 33.460616] kasan_report de kasan_check_range+0x94/0x1a0 [ 33.461424] kasan_check_range de memset+0x20/0x 3c [33.462157] conjunto de memorias de refresco_cpu_vm_stats.constprop.0+0xcc/ 0x2ec [33.463064] refresco_cpu_vm_stats.constprop.0 de tick_nohz_idle_stop_tick+0x180/0x53c [33.464181] tick_nohz_idle_stop_tick de do_idle+0x264/0x354 [33.465029] do_idle de cpu_startup _entry+0x20/0x24 [ 33.465769] cpu_startup_entry de rest_init+0xf0/0xf4 [ 33.466528] rest_init de arch_post_acpi_subsys_init+0x0/0x18 [33.467397] [33.467644] La direcci\u00f3n con errores pertenece a la pila de task swapper/0/0 [33.468493] y se encuentra en el desplazamiento 112 en el framework: [33.469172] [ 33.469917 ] [ 33.470165] Este framework tiene 2 objetos: [ 33.470696] [32, 76) \u0027global_zone_diff\u0027 [ 33.470729] [112, 276) \u0027global_node_diff\u0027 [ 33.471294] [ 33.472095] La direcci\u00f3n con errores pertenece a la p\u00e1gina f\u00edsica: [ 33.47 2862] p\u00e1gina:3cd72da8 refcount:1 mapcount:0 mapeo:00000000 \u00edndice:0x0 pfn:0x41d03 [ 33.473944] banderas: 0x1000(reservado|zona=0) [ 33.474565] raw: 00001000 ed741470 ed741470 00000000 000000 00000000 ffffffff 00000001 [ 33.475656] sin formato: 00000000 [33.476050] p\u00e1gina volcada porque: kasan: mal acceso detectado [33.476816] [33.477061] Estado de la memoria alrededor de la direcci\u00f3n con errores: [33.477732] c1d03c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0 [33.478630] c1d03c80 : 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00 [ 33.479526] \u0026gt;c1d03d00: 00 04 f2 f2 f2 f2 00 00 00 00 00 00 f1 f1 f1 f1 [ 33.480415] ^ [ 3.481195] c1d03d80: 00 00 00 00 00 00 00 00 00 00 04 f3 f3 f3 f3 f3 [ 33.482088] c1d03e00: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 [ 33.482978] === ==================================================== ==== Descubrimos que la causa principal de este OOB es que el brazo no elimina el veneno de la pila obsoleta en el caso de cpuidle. Este parche hace referencia a arch/arm64/kernel/sleep.S para resolver este problema. Del compromiso citado [1] que explica el problema. Las funciones que el compilador ha instrumentado para KASAN colocan veneno en la sombra de la pila al ingresar y eliminan este veneno antes de regresar. En el caso de cpuidle, las CPU salen del kernel a varios niveles de profundidad en el c\u00f3digo C. Cualquier funci\u00f3n instrumentada en esta ruta cr\u00edtica dejar\u00e1 partes de la sombra de la pila envenenadas. Si las CPU pierden contexto y regresan al kernel a trav\u00e9s de una ruta fr\u00eda, restauramos un contexto anterior guardado en __cpu_suspend_enter que se olvida y nunca eliminamos el veneno que colocaron en el \u00e1rea de sombra de la pila mediante llamadas a funciones entre este y la salida real del kernel. . Por lo tanto, (dependiendo del dise\u00f1o del framework de pila) las llamadas posteriores a funciones instrumentadas pueden afectar este veneno obsoleto, lo que resulta en s\u00edmbolos KASAN (falsos) en la consola. Para evitar esto, elimine cualquier veneno obsoleto del subproceso inactivo de una CPU antes de ponerla en l\u00ednea. De la confirmaci\u00f3n citada [2] Ampliar para verificar CONFIG_KASAN_STACK [1] commit 0d97e6d8024c (\\\"arm64: kasan: borrar veneno de pila obsoleta\\\") [2] commit d56a9ef84bd0 (\\\"kasan, arm64: pila sin veneno solo con CONFIG_KASAN_STACK\\\")\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/20ac71bee028ffbae4fc14ed679b23b4d3e95726\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ad702338fe423cb1e79745787090317256a98dab\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b26f353786d365e658cebc9a9ace88e04fc2325e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c4238686f9093b98bd6245a348bcf059cdce23af\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ee0ce7573e5083031960faf602c9db693ab5b477\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/20ac71bee028ffbae4fc14ed679b23b4d3e95726\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/ad702338fe423cb1e79745787090317256a98dab\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/b26f353786d365e658cebc9a9ace88e04fc2325e\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/c4238686f9093b98bd6245a348bcf059cdce23af\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://git.kernel.org/stable/c/ee0ce7573e5083031960faf602c9db693ab5b477\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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