{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run\n\nIn mtk_jpeg_probe, &jpeg->job_timeout_work is bound with\nmtk_jpeg_job_timeout_work.\n\nIn mtk_jpeg_dec_device_run, if error happens in\nmtk_jpeg_set_dec_dst, it will finally start the worker while\nmark the job as finished by invoking v4l2_m2m_job_finish.\n\nThere are two methods to trigger the bug. If we remove the\nmodule, it which will call mtk_jpeg_remove to make cleanup.\nThe possible sequence is as follows, which will cause a\nuse-after-free bug.\n\nCPU0                  CPU1\nmtk_jpeg_dec_...    |\n  start worker\t    |\n                    |mtk_jpeg_job_timeout_work\nmtk_jpeg_remove     |\n  v4l2_m2m_release  |\n    kfree(m2m_dev); |\n                    |\n                    | v4l2_m2m_get_curr_priv\n                    |   m2m_dev->curr_ctx //use\n\nIf we close the file descriptor, which will call mtk_jpeg_release,\nit will have a similar sequence.\n\nFix this bug by starting timeout worker only if started jpegdec worker\nsuccessfully. Then v4l2_m2m_job_finish will only be called in\neither mtk_jpeg_job_timeout_work or mtk_jpeg_dec_device_run."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c"
               ],
               "versions": [
                  {
                     "version": "b2f0d2724ba4",
                     "lessThan": "43872f44eee6",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "b2f0d2724ba4",
                     "lessThan": "1b1036c60a37",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "b2f0d2724ba4",
                     "lessThan": "9fec4db7fff5",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "b2f0d2724ba4",
                     "lessThan": "8254d54d00eb",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "b2f0d2724ba4",
                     "lessThan": "6e2f37022f0f",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "b2f0d2724ba4",
                     "lessThan": "206c857dd17d",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c"
               ],
               "versions": [
                  {
                     "version": "4.12",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "4.12",
                     "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": "6.1.76",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.15",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.3",
                     "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/43872f44eee6c6781fea1348b38885d8e78face9"
            },
            {
               "url": "https://git.kernel.org/stable/c/1b1036c60a37a30caf6759a90fe5ecd06ec35590"
            },
            {
               "url": "https://git.kernel.org/stable/c/9fec4db7fff54d9b0306a332bab31eac47eeb5f6"
            },
            {
               "url": "https://git.kernel.org/stable/c/8254d54d00eb6cdb8367399c7f912eb8d354ecd7"
            },
            {
               "url": "https://git.kernel.org/stable/c/6e2f37022f0fc0893da4d85a0500c9d547fffd4c"
            },
            {
               "url": "https://git.kernel.org/stable/c/206c857dd17d4d026de85866f1b5f0969f2a109e"
            }
         ],
         "title": "media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2023-52491",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}