{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-53457",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-53457"
  ],
  "published": "2025-10-01T11:43:29Z",
  "summary": "FS: JFS: Fix null-ptr-deref Read in txBegin",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nFS: JFS: Fix null-ptr-deref Read in txBegin\n\n Syzkaller reported an issue where txBegin may be called\n on a superblock in a read-only mounted filesystem which leads\n to NULL pointer deref. This could be solved by checking if\n the filesystem is read-only before calling txBegin, and returning\n with appropiate error code.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.21-1+rpt1"
      ],
      "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"
          }
        ]
      },
      "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": "6.1.42"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-53457"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a7225e9e09519deb7e0c42eb6070029cc456e84d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1b4c144767736221cad92c132f72b3c6ed06a0ea"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a7d17d6bd7cd4f6940b335ea7a6fce5b6d22adc2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2a3f20efe6c901d4c0871cfd1d8c65e2ade71fc1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3e94d0d378d2754b26fc54b429582553f7b53e15"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3e5eb6c5ecd8ddb9cfea751cf30f9e23eac97ca3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fd2db13fb72ff18c633a48229589d42ceb89d1f8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/47cfdc338d674d38f4b2f22b7612cc6a2763ba27"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}