{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-52699",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-52699"
  ],
  "published": "2024-05-19T10:11:49Z",
  "summary": "sysv: don't call sb_bread() with pointers_lock held",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsysv: don't call sb_bread() with pointers_lock held\n\nsyzbot is reporting sleep in atomic context in SysV filesystem [1], for\nsb_bread() is called with rw_spinlock held.\n\nA \"write_lock(&pointers_lock) => read_lock(&pointers_lock) deadlock\" bug\nand a \"sb_bread() with write_lock(&pointers_lock)\" bug were introduced by\n\"Replace BKL for chain locking with sysvfs-private rwlock\" in Linux 2.5.12.\n\nThen, \"[PATCH] err1-40: sysvfs locking fix\" in Linux 2.6.8 fixed the\nformer bug by moving pointers_lock lock to the callers, but instead\nintroduced a \"sb_bread() with read_lock(&pointers_lock)\" bug (which made\nthis problem easier to hit).\n\nAl Viro suggested that why not to do like get_branch()/get_block()/\nfind_shared() in Minix filesystem does. And doing like that is almost a\nrevert of \"[PATCH] err1-40: sysvfs locking fix\" except that get_branch()\n from with find_shared() is called without write_lock(&pointers_lock).",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "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": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.86",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-52699"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/13b33feb2ebddc2b1aa607f553566b18a4af1d76"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1b4fe801b5bedec2b622ddb18e5c9bf26c63d79f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/674c1c4229e743070e09db63a23442950ff000d1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fd203d2c671bdee9ab77090ff394d3b71b627927"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/53cb1e52c9db618c08335984d1ca80db220ccf09"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/89e8524135a3902e7563a5a59b7b5ec1bf4904ac"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a69224223746ab96d43e5db9d22d136827b7e2d3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f123dc86388cb669c3d6322702dc441abc35c31e"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}