{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-53848",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-53848"
  ],
  "published": "2025-12-09T01:31:24Z",
  "summary": "md/raid5-cache: fix a deadlock in r5l_exit_log()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5-cache: fix a deadlock in r5l_exit_log()\n\nCommit b13015af94cf (\"md/raid5-cache: Clear conf->log after finishing\nwork\") introduce a new problem:\n\n// caller hold reconfig_mutex\nr5l_exit_log\n flush_work(&log->disable_writeback_work)\n\t\t\tr5c_disable_writeback_async\n\t\t\t wait_event\n\t\t\t  /*\n\t\t\t   * conf->log is not NULL, and mddev_trylock()\n\t\t\t   * will fail, wait_event() can never pass.\n\t\t\t   */\n conf->log = NULL\n\nFix this problem by setting 'config->log' to NULL before wake_up() as it\nused to be, so that wait_event() from r5c_disable_writeback_async() can\nexist. In the meantime, move forward md_unregister_thread() so that\nnull-ptr-deref this commit fixed can still be fixed.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.21-1+rpt1",
        "1:6.1.47-1+rpt2",
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v6",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7l",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v8",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi2-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt2"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi2-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt2"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi2-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt2"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi2-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt2"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.21-1+rpt1": {
            "linux_commit": "0afb5e98488aed7017b9bf321b575d0177feb7ed",
            "upstream_version": "6.1.21",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.53"
          },
          "1:6.1.47-1+rpt2": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.53"
          },
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.53",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-53848"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ac9e103f282a7854f3274ef5ff0742fbbe8d7d6b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/71cf23271f015a57038bdc4669952096f9fe5500"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c406984738215dc20ac2dc63e49d70f20797730e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a705b11b358dee677aad80630e7608b2d5f56691"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}