cve-2021-47483
Vulnerability from cvelistv5
Published
2024-05-22 08:19
Modified
2024-09-11 17:32
Severity
Summary
regmap: Fix possible double-free in regcache_rbtree_exit()
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1cead23c1c0bc766dacb900a3b0269f651ad596f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/36e911a16b377bde0ad91a8c679069d0d310b1a6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3dae1a4eced3ee733d7222e69b8a55caf2d61091
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/50cc1462a668dc62949a1127388bc3af785ce047
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/55e6d8037805b3400096d621091dfbf713f97e83
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/758ced2c3878ff789801e6fee808e185c5cf08d6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e72dce9afbdbfa70d9b44f5908a50ff6c4858999
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc081477b47dfc3a6cb50a96087fc29674013fc2
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:39:59.752Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/e72dce9afbdbfa70d9b44f5908a50ff6c4858999"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/fc081477b47dfc3a6cb50a96087fc29674013fc2"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/758ced2c3878ff789801e6fee808e185c5cf08d6"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/3dae1a4eced3ee733d7222e69b8a55caf2d61091"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/1cead23c1c0bc766dacb900a3b0269f651ad596f"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/36e911a16b377bde0ad91a8c679069d0d310b1a6"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/50cc1462a668dc62949a1127388bc3af785ce047"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/55e6d8037805b3400096d621091dfbf713f97e83"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47483",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:35:58.617398Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:32:53.194Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/base/regmap/regcache-rbtree.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e72dce9afbdb",
              "status": "affected",
              "version": "3f4ff561bc88",
              "versionType": "git"
            },
            {
              "lessThan": "fc081477b47d",
              "status": "affected",
              "version": "3f4ff561bc88",
              "versionType": "git"
            },
            {
              "lessThan": "758ced2c3878",
              "status": "affected",
              "version": "3f4ff561bc88",
              "versionType": "git"
            },
            {
              "lessThan": "3dae1a4eced3",
              "status": "affected",
              "version": "3f4ff561bc88",
              "versionType": "git"
            },
            {
              "lessThan": "1cead23c1c0b",
              "status": "affected",
              "version": "3f4ff561bc88",
              "versionType": "git"
            },
            {
              "lessThan": "36e911a16b37",
              "status": "affected",
              "version": "3f4ff561bc88",
              "versionType": "git"
            },
            {
              "lessThan": "50cc1462a668",
              "status": "affected",
              "version": "3f4ff561bc88",
              "versionType": "git"
            },
            {
              "lessThan": "55e6d8037805",
              "status": "affected",
              "version": "3f4ff561bc88",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/base/regmap/regcache-rbtree.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.12"
            },
            {
              "lessThan": "3.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.291",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.289",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.254",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.215",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.157",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.77",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "5.14.*",
              "status": "unaffected",
              "version": "5.14.16",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nregmap: Fix possible double-free in regcache_rbtree_exit()\n\nIn regcache_rbtree_insert_to_block(), when \u0027present\u0027 realloc failed,\nthe \u0027blk\u0027 which is supposed to assign to \u0027rbnode-\u003eblock\u0027 will be freed,\nso \u0027rbnode-\u003eblock\u0027 points a freed memory, in the error handling path of\nregcache_rbtree_init(), \u0027rbnode-\u003eblock\u0027 will be freed again in\nregcache_rbtree_exit(), KASAN will report double-free as follows:\n\nBUG: KASAN: double-free or invalid-free in kfree+0xce/0x390\nCall Trace:\n slab_free_freelist_hook+0x10d/0x240\n kfree+0xce/0x390\n regcache_rbtree_exit+0x15d/0x1a0\n regcache_rbtree_init+0x224/0x2c0\n regcache_init+0x88d/0x1310\n __regmap_init+0x3151/0x4a80\n __devm_regmap_init+0x7d/0x100\n madera_spi_probe+0x10f/0x333 [madera_spi]\n spi_probe+0x183/0x210\n really_probe+0x285/0xc30\n\nTo fix this, moving up the assignment of rbnode-\u003eblock to immediately after\nthe reallocation has succeeded so that the data structure stays valid even\nif the second reallocation fails."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-05-29T05:08:45.372Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e72dce9afbdbfa70d9b44f5908a50ff6c4858999"
        },
        {
          "url": "https://git.kernel.org/stable/c/fc081477b47dfc3a6cb50a96087fc29674013fc2"
        },
        {
          "url": "https://git.kernel.org/stable/c/758ced2c3878ff789801e6fee808e185c5cf08d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/3dae1a4eced3ee733d7222e69b8a55caf2d61091"
        },
        {
          "url": "https://git.kernel.org/stable/c/1cead23c1c0bc766dacb900a3b0269f651ad596f"
        },
        {
          "url": "https://git.kernel.org/stable/c/36e911a16b377bde0ad91a8c679069d0d310b1a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/50cc1462a668dc62949a1127388bc3af785ce047"
        },
        {
          "url": "https://git.kernel.org/stable/c/55e6d8037805b3400096d621091dfbf713f97e83"
        }
      ],
      "title": "regmap: Fix possible double-free in regcache_rbtree_exit()",
      "x_generator": {
        "engine": "bippy-a5840b7849dd"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47483",
    "datePublished": "2024-05-22T08:19:34.852Z",
    "dateReserved": "2024-05-22T06:20:56.200Z",
    "dateUpdated": "2024-09-11T17:32:53.194Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47483\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-22T09:15:10.227\",\"lastModified\":\"2024-05-22T12:46:53.887\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nregmap: Fix possible double-free in regcache_rbtree_exit()\\n\\nIn regcache_rbtree_insert_to_block(), when \u0027present\u0027 realloc failed,\\nthe \u0027blk\u0027 which is supposed to assign to \u0027rbnode-\u003eblock\u0027 will be freed,\\nso \u0027rbnode-\u003eblock\u0027 points a freed memory, in the error handling path of\\nregcache_rbtree_init(), \u0027rbnode-\u003eblock\u0027 will be freed again in\\nregcache_rbtree_exit(), KASAN will report double-free as follows:\\n\\nBUG: KASAN: double-free or invalid-free in kfree+0xce/0x390\\nCall Trace:\\n slab_free_freelist_hook+0x10d/0x240\\n kfree+0xce/0x390\\n regcache_rbtree_exit+0x15d/0x1a0\\n regcache_rbtree_init+0x224/0x2c0\\n regcache_init+0x88d/0x1310\\n __regmap_init+0x3151/0x4a80\\n __devm_regmap_init+0x7d/0x100\\n madera_spi_probe+0x10f/0x333 [madera_spi]\\n spi_probe+0x183/0x210\\n really_probe+0x285/0xc30\\n\\nTo fix this, moving up the assignment of rbnode-\u003eblock to immediately after\\nthe reallocation has succeeded so that the data structure stays valid even\\nif the second reallocation fails.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: regmap: corrige posible doble liberaci\u00f3n en regcache_rbtree_exit() En regcache_rbtree_insert_to_block(), cuando la realloc \u0027presente\u0027 fallaba, el \u0027blk\u0027 que se supone debe asignarse a \u0027rbnode-\u0026gt;block \u0027 se liberar\u00e1, por lo que \u0027rbnode-\u0026gt;block\u0027 apunta a una memoria liberada, en la ruta de manejo de errores de regcache_rbtree_init(), \u0027rbnode-\u0026gt;block\u0027 se liberar\u00e1 nuevamente en regcache_rbtree_exit(), KASAN informar\u00e1 la doble liberaci\u00f3n de la siguiente manera : ERROR: KASAN: doble libre o no v\u00e1lido en kfree+0xce/0x390 Rastreo de llamadas: slab_free_freelist_hook+0x10d/0x240 kfree+0xce/0x390 regcache_rbtree_exit+0x15d/0x1a0 regcache_rbtree_init+0x224/0x2c0 regcache_init+0x88d/ 0x1310 __regmap_init+0x3151/ 0x4a80 __devm_regmap_init+0x7d/0x100 madera_spi_probe+0x10f/0x333 [madera_spi] spi_probe+0x183/0x210 Actually_probe+0x285/0xc30 Para solucionar este problema, mueva hacia arriba la asignaci\u00f3n de rbnode-\u0026gt;block inmediatamente despu\u00e9s de que la reasignaci\u00f3n se haya realizado correctamente para que la estructura de datos permanezca v\u00e1lido incluso si la segunda reasignaci\u00f3n falla.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1cead23c1c0bc766dacb900a3b0269f651ad596f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/36e911a16b377bde0ad91a8c679069d0d310b1a6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3dae1a4eced3ee733d7222e69b8a55caf2d61091\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/50cc1462a668dc62949a1127388bc3af785ce047\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/55e6d8037805b3400096d621091dfbf713f97e83\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/758ced2c3878ff789801e6fee808e185c5cf08d6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e72dce9afbdbfa70d9b44f5908a50ff6c4858999\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fc081477b47dfc3a6cb50a96087fc29674013fc2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.