{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: extlog: fix NULL pointer dereference check\n\nThe gcc plugin -fanalyzer [1] tries to detect various\npatterns of incorrect behaviour.  The tool reports:\n\ndrivers/acpi/acpi_extlog.c: In function ‘extlog_exit’:\ndrivers/acpi/acpi_extlog.c:307:12: warning: check of ‘extlog_l1_addr’ for NULL after already dereferencing it [-Wanalyzer-deref-before-check]\n    |\n    |  306 |         ((struct extlog_l1_head *)extlog_l1_addr)->flags &= ~FLAG_OS_OPTIN;\n    |      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~\n    |      |                                                  |\n    |      |                                                  (1) pointer ‘extlog_l1_addr’ is dereferenced here\n    |  307 |         if (extlog_l1_addr)\n    |      |            ~\n    |      |            |\n    |      |            (2) pointer ‘extlog_l1_addr’ is checked for NULL here but it was already dereferenced at (1)\n    |\n\nFix the NULL pointer dereference check in extlog_exit()."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "versions": [
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "b7b33627be06",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "d2049af7ddbc",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "b17a71435e7e",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "5457b0cbaa02",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "33650372e3ea",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "f066171de33d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "77846571b3ba",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "72d9b9747e78",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "versions": [
                  {
                     "version": "4.19.307",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.269",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.210",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.149",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.77",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.16",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.4",
                     "lessThanOrEqual": "6.7.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/b7b33627be0626b16ca321b982d6a2261ef7f703"
            },
            {
               "url": "https://git.kernel.org/stable/c/d2049af7ddbc361702c3e1f09bd6c5e9488454ca"
            },
            {
               "url": "https://git.kernel.org/stable/c/b17a71435e7e153e949df018244a98b4ede04069"
            },
            {
               "url": "https://git.kernel.org/stable/c/5457b0cbaa0238fc56b855c4ef2c0b9cc9c559ab"
            },
            {
               "url": "https://git.kernel.org/stable/c/33650372e3ead97c5ab3b84d9ad97737bc5e00c0"
            },
            {
               "url": "https://git.kernel.org/stable/c/f066171de33d71ff0f7c46bd17636a5a26db3fb6"
            },
            {
               "url": "https://git.kernel.org/stable/c/77846571b3ba6a6125a20ad109bb8514ba884cf9"
            },
            {
               "url": "https://git.kernel.org/stable/c/72d9b9747e78979510e9aafdd32eb99c7aa30dd1"
            }
         ],
         "title": "ACPI: extlog: fix NULL pointer dereference check",
         "x_generator": {
            "engine": "bippy-8df59b4913de"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2023-52605",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}