CVE-2024-53097
Vulnerability from cvelistv5
Published
2024-11-25 21:21
Modified
2024-12-19 09:39
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: mm: krealloc: Fix MTE false alarm in __do_krealloc This patch addresses an issue introduced by commit 1a83a716ec233 ("mm: krealloc: consider spare memory for __GFP_ZERO") which causes MTE (Memory Tagging Extension) to falsely report a slab-out-of-bounds error. The problem occurs when zeroing out spare memory in __do_krealloc. The original code only considered software-based KASAN and did not account for MTE. It does not reset the KASAN tag before calling memset, leading to a mismatch between the pointer tag and the memory tag, resulting in a false positive. Example of the error: ================================================================== swapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188 swapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1 swapper/0: Pointer tag: [f4], memory tag: [fe] swapper/0: swapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12. swapper/0: Hardware name: MT6991(ENG) (DT) swapper/0: Call trace: swapper/0: dump_backtrace+0xfc/0x17c swapper/0: show_stack+0x18/0x28 swapper/0: dump_stack_lvl+0x40/0xa0 swapper/0: print_report+0x1b8/0x71c swapper/0: kasan_report+0xec/0x14c swapper/0: __do_kernel_fault+0x60/0x29c swapper/0: do_bad_area+0x30/0xdc swapper/0: do_tag_check_fault+0x20/0x34 swapper/0: do_mem_abort+0x58/0x104 swapper/0: el1_abort+0x3c/0x5c swapper/0: el1h_64_sync_handler+0x80/0xcc swapper/0: el1h_64_sync+0x68/0x6c swapper/0: __memset+0x84/0x188 swapper/0: btf_populate_kfunc_set+0x280/0x3d8 swapper/0: __register_btf_kfunc_id_set+0x43c/0x468 swapper/0: register_btf_kfunc_id_set+0x48/0x60 swapper/0: register_nf_nat_bpf+0x1c/0x40 swapper/0: nf_nat_init+0xc0/0x128 swapper/0: do_one_initcall+0x184/0x464 swapper/0: do_initcall_level+0xdc/0x1b0 swapper/0: do_initcalls+0x70/0xc0 swapper/0: do_basic_setup+0x1c/0x28 swapper/0: kernel_init_freeable+0x144/0x1b8 swapper/0: kernel_init+0x20/0x1a8 swapper/0: ret_from_fork+0x10/0x20 ==================================================================
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3dfb40da84f26dd35dd9bbaf626a2424565b8406
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/486aeb5f1855c75dd810c25036134961bd2a6722
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/704573851b51808b45dae2d62059d1d8189138a2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/71548fada7ee0eb50cc6ccda82dff010c745f92c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8ebee7565effdeae6085458f8f8463363120a871
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d02492863023431c31f85d570f718433c22b9311
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d43f1430d47c22a0727c05b6f156ed25fecdfeb4
Impacted products
Vendor Product Version
Linux Linux Version: 5.10.227   ≤
Version: 5.15.168   ≤
Version: 6.1.113   ≤
Version: 6.6.55   ≤
Version: 6.11.3   ≤
Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/slab_common.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "c383263ee82a01a5a9bc1a466025ccde39a38cae",
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              "versionType": "git"
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              "versionType": "git"
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "704573851b51808b45dae2d62059d1d8189138a2",
              "status": "affected",
              "version": "1a83a716ec233990e1fd5b6fbb1200ade63bf450",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/slab_common.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "5.10.230",
              "status": "affected",
              "version": "5.10.227",
              "versionType": "semver"
            },
            {
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              "status": "affected",
              "version": "5.15.168",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.118",
              "status": "affected",
              "version": "6.1.113",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.62",
              "status": "affected",
              "version": "6.6.55",
              "versionType": "semver"
            },
            {
              "lessThan": "6.11.9",
              "status": "affected",
              "version": "6.11.3",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: krealloc: Fix MTE false alarm in __do_krealloc\n\nThis patch addresses an issue introduced by commit 1a83a716ec233 (\"mm:\nkrealloc: consider spare memory for __GFP_ZERO\") which causes MTE\n(Memory Tagging Extension) to falsely report a slab-out-of-bounds error.\n\nThe problem occurs when zeroing out spare memory in __do_krealloc. The\noriginal code only considered software-based KASAN and did not account\nfor MTE. It does not reset the KASAN tag before calling memset, leading\nto a mismatch between the pointer tag and the memory tag, resulting\nin a false positive.\n\nExample of the error:\n==================================================================\nswapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188\nswapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1\nswapper/0: Pointer tag: [f4], memory tag: [fe]\nswapper/0:\nswapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.\nswapper/0: Hardware name: MT6991(ENG) (DT)\nswapper/0: Call trace:\nswapper/0:  dump_backtrace+0xfc/0x17c\nswapper/0:  show_stack+0x18/0x28\nswapper/0:  dump_stack_lvl+0x40/0xa0\nswapper/0:  print_report+0x1b8/0x71c\nswapper/0:  kasan_report+0xec/0x14c\nswapper/0:  __do_kernel_fault+0x60/0x29c\nswapper/0:  do_bad_area+0x30/0xdc\nswapper/0:  do_tag_check_fault+0x20/0x34\nswapper/0:  do_mem_abort+0x58/0x104\nswapper/0:  el1_abort+0x3c/0x5c\nswapper/0:  el1h_64_sync_handler+0x80/0xcc\nswapper/0:  el1h_64_sync+0x68/0x6c\nswapper/0:  __memset+0x84/0x188\nswapper/0:  btf_populate_kfunc_set+0x280/0x3d8\nswapper/0:  __register_btf_kfunc_id_set+0x43c/0x468\nswapper/0:  register_btf_kfunc_id_set+0x48/0x60\nswapper/0:  register_nf_nat_bpf+0x1c/0x40\nswapper/0:  nf_nat_init+0xc0/0x128\nswapper/0:  do_one_initcall+0x184/0x464\nswapper/0:  do_initcall_level+0xdc/0x1b0\nswapper/0:  do_initcalls+0x70/0xc0\nswapper/0:  do_basic_setup+0x1c/0x28\nswapper/0:  kernel_init_freeable+0x144/0x1b8\nswapper/0:  kernel_init+0x20/0x1a8\nswapper/0:  ret_from_fork+0x10/0x20\n=================================================================="
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:39:06.026Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8ebee7565effdeae6085458f8f8463363120a871"
        },
        {
          "url": "https://git.kernel.org/stable/c/d02492863023431c31f85d570f718433c22b9311"
        },
        {
          "url": "https://git.kernel.org/stable/c/d43f1430d47c22a0727c05b6f156ed25fecdfeb4"
        },
        {
          "url": "https://git.kernel.org/stable/c/486aeb5f1855c75dd810c25036134961bd2a6722"
        },
        {
          "url": "https://git.kernel.org/stable/c/71548fada7ee0eb50cc6ccda82dff010c745f92c"
        },
        {
          "url": "https://git.kernel.org/stable/c/3dfb40da84f26dd35dd9bbaf626a2424565b8406"
        },
        {
          "url": "https://git.kernel.org/stable/c/704573851b51808b45dae2d62059d1d8189138a2"
        }
      ],
      "title": "mm: krealloc: Fix MTE false alarm in __do_krealloc",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-53097",
    "datePublished": "2024-11-25T21:21:26.549Z",
    "dateReserved": "2024-11-19T17:17:24.983Z",
    "dateUpdated": "2024-12-19T09:39:06.026Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-53097\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-25T22:15:15.763\",\"lastModified\":\"2024-11-25T22:15:15.763\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm: krealloc: Fix MTE false alarm in __do_krealloc\\n\\nThis patch addresses an issue introduced by commit 1a83a716ec233 (\\\"mm:\\nkrealloc: consider spare memory for __GFP_ZERO\\\") which causes MTE\\n(Memory Tagging Extension) to falsely report a slab-out-of-bounds error.\\n\\nThe problem occurs when zeroing out spare memory in __do_krealloc. The\\noriginal code only considered software-based KASAN and did not account\\nfor MTE. It does not reset the KASAN tag before calling memset, leading\\nto a mismatch between the pointer tag and the memory tag, resulting\\nin a false positive.\\n\\nExample of the error:\\n==================================================================\\nswapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188\\nswapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1\\nswapper/0: Pointer tag: [f4], memory tag: [fe]\\nswapper/0:\\nswapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.\\nswapper/0: Hardware name: MT6991(ENG) (DT)\\nswapper/0: Call trace:\\nswapper/0:  dump_backtrace+0xfc/0x17c\\nswapper/0:  show_stack+0x18/0x28\\nswapper/0:  dump_stack_lvl+0x40/0xa0\\nswapper/0:  print_report+0x1b8/0x71c\\nswapper/0:  kasan_report+0xec/0x14c\\nswapper/0:  __do_kernel_fault+0x60/0x29c\\nswapper/0:  do_bad_area+0x30/0xdc\\nswapper/0:  do_tag_check_fault+0x20/0x34\\nswapper/0:  do_mem_abort+0x58/0x104\\nswapper/0:  el1_abort+0x3c/0x5c\\nswapper/0:  el1h_64_sync_handler+0x80/0xcc\\nswapper/0:  el1h_64_sync+0x68/0x6c\\nswapper/0:  __memset+0x84/0x188\\nswapper/0:  btf_populate_kfunc_set+0x280/0x3d8\\nswapper/0:  __register_btf_kfunc_id_set+0x43c/0x468\\nswapper/0:  register_btf_kfunc_id_set+0x48/0x60\\nswapper/0:  register_nf_nat_bpf+0x1c/0x40\\nswapper/0:  nf_nat_init+0xc0/0x128\\nswapper/0:  do_one_initcall+0x184/0x464\\nswapper/0:  do_initcall_level+0xdc/0x1b0\\nswapper/0:  do_initcalls+0x70/0xc0\\nswapper/0:  do_basic_setup+0x1c/0x28\\nswapper/0:  kernel_init_freeable+0x144/0x1b8\\nswapper/0:  kernel_init+0x20/0x1a8\\nswapper/0:  ret_from_fork+0x10/0x20\\n==================================================================\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm: krealloc: corrige la falsa alarma de MTE en __do_krealloc Este parche soluciona un problema introducido por el commit 1a83a716ec233 (\\\"mm: krealloc: considere la memoria de repuesto para __GFP_ZERO\\\") que hace que MTE (extensi\u00f3n de etiquetado de memoria) informe falsamente un error de losa fuera de los l\u00edmites. El problema ocurre al poner a cero la memoria de repuesto en __do_krealloc. El c\u00f3digo original solo consideraba KASAN basado en software y no ten\u00eda en cuenta MTE. No restablece la etiqueta KASAN antes de llamar a memset, lo que lleva a una falta de coincidencia entre la etiqueta del puntero y la etiqueta de memoria, lo que resulta en un falso positivo. Ejemplo del error: ================================================================== swapper/0: ERROR: KASAN: slab fuera de los l\u00edmites en __memset+0x84/0x188 swapper/0: Escritura en la direcci\u00f3n f4ffff8005f0fdf0 por la tarea swapper/0/1 swapper/0: Etiqueta de puntero: [f4], etiqueta de memoria: [fe] swapper/0: swapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 No contaminado 6.12. swapper/0: Nombre del hardware: MT6991(ENG) (DT) swapper/0: Rastreo de llamadas: swapper/0: dump_backtrace+0xfc/0x17c swapper/0: show_stack+0x18/0x28 swapper/0: dump_stack_lvl+0x40/0xa0 swapper/0: print_report+0x1b8/0x71c swapper/0: kasan_report+0xec/0x14c swapper/0: __do_kernel_fault+0x60/0x29c swapper/0: do_bad_area+0x30/0xdc swapper/0: do_tag_check_fault+0x20/0x34 swapper/0: do_mem_abort+0x58/0x104 swapper/0: el1_abort+0x3c/0x5c intercambiador/0: el1h_64_sync_handler+0x80/0xcc intercambiador/0: el1h_64_sync+0x68/0x6c intercambiador/0: __memset+0x84/0x188 intercambiador/0: btf_populate_kfunc_set+0x280/0x3d8 intercambiador/0: __register_btf_kfunc_id_set+0x43c/0x468 intercambiador/0: register_btf_kfunc_id_set+0x48/0x60 intercambiador/0: register_nf_nat_bpf+0x1c/0x40 intercambiador/0: nf_nat_init+0xc0/0x128 intercambiador/0: do_one_initcall+0x184/0x464 intercambiador/0: do_initcall_level+0xdc/0x1b0 intercambiador/0: do_initcalls+0x70/0xc0 intercambiador/0: do_basic_setup+0x1c/0x28 intercambiador/0: kernel_init_freeable+0x144/0x1b8 intercambiador/0: kernel_init+0x20/0x1a8 intercambiador/0: ret_from_fork+0x10/0x20 ====================================================================\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3dfb40da84f26dd35dd9bbaf626a2424565b8406\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/486aeb5f1855c75dd810c25036134961bd2a6722\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/704573851b51808b45dae2d62059d1d8189138a2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/71548fada7ee0eb50cc6ccda82dff010c745f92c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8ebee7565effdeae6085458f8f8463363120a871\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d02492863023431c31f85d570f718433c22b9311\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d43f1430d47c22a0727c05b6f156ed25fecdfeb4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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