CVE-2025-38652 (GCVE-0-2025-38652)
Vulnerability from cvelistv5
Published
2025-08-22 16:00
Modified
2025-11-03 17:40
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid out-of-boundary access in devs.path - touch /mnt/f2fs/012345678901234567890123456789012345678901234567890123 - truncate -s $((1024*1024*1024)) \ /mnt/f2fs/012345678901234567890123456789012345678901234567890123 - touch /mnt/f2fs/file - truncate -s $((1024*1024*1024)) /mnt/f2fs/file - mkfs.f2fs /mnt/f2fs/012345678901234567890123456789012345678901234567890123 \ -c /mnt/f2fs/file - mount /mnt/f2fs/012345678901234567890123456789012345678901234567890123 \ /mnt/f2fs/loop [16937.192225] F2FS-fs (loop0): Mount Device [ 0]: /mnt/f2fs/012345678901234567890123456789012345678901234567890123\xff\x01, 511, 0 - 3ffff [16937.192268] F2FS-fs (loop0): Failed to find devices If device path length equals to MAX_PATH_LEN, sbi->devs.path[] may not end up w/ null character due to path array is fully filled, So accidently, fields locate after path[] may be treated as part of device path, result in parsing wrong device path. struct f2fs_dev_info { ... char path[MAX_PATH_LEN]; ... }; Let's add one byte space for sbi->devs.path[] to store null character of device path string.
References
Impacted products
Vendor Product Version
Linux Linux Version: 3c62be17d4f562f43fe1d03b48194399caa35aa5
Version: 3c62be17d4f562f43fe1d03b48194399caa35aa5
Version: 3c62be17d4f562f43fe1d03b48194399caa35aa5
Version: 3c62be17d4f562f43fe1d03b48194399caa35aa5
Version: 3c62be17d4f562f43fe1d03b48194399caa35aa5
Version: 3c62be17d4f562f43fe1d03b48194399caa35aa5
Version: 3c62be17d4f562f43fe1d03b48194399caa35aa5
Version: 3c62be17d4f562f43fe1d03b48194399caa35aa5
Version: 3c62be17d4f562f43fe1d03b48194399caa35aa5
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid out-of-boundary access in devs.path\n\n- touch /mnt/f2fs/012345678901234567890123456789012345678901234567890123\n- truncate -s $((1024*1024*1024)) \\\n  /mnt/f2fs/012345678901234567890123456789012345678901234567890123\n- touch /mnt/f2fs/file\n- truncate -s $((1024*1024*1024)) /mnt/f2fs/file\n- mkfs.f2fs /mnt/f2fs/012345678901234567890123456789012345678901234567890123 \\\n  -c /mnt/f2fs/file\n- mount /mnt/f2fs/012345678901234567890123456789012345678901234567890123 \\\n  /mnt/f2fs/loop\n\n[16937.192225] F2FS-fs (loop0): Mount Device [ 0]: /mnt/f2fs/012345678901234567890123456789012345678901234567890123\\xff\\x01,      511,        0 -    3ffff\n[16937.192268] F2FS-fs (loop0): Failed to find devices\n\nIf device path length equals to MAX_PATH_LEN, sbi-\u003edevs.path[] may\nnot end up w/ null character due to path array is fully filled, So\naccidently, fields locate after path[] may be treated as part of\ndevice path, result in parsing wrong device path.\n\nstruct f2fs_dev_info {\n...\n\tchar path[MAX_PATH_LEN];\n...\n};\n\nLet\u0027s add one byte space for sbi-\u003edevs.path[] to store null\ncharacter of device path string."
        }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/666b7cf6ac9aa074b8319a2b68cba7f2c30023f0"
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          "url": "https://git.kernel.org/stable/c/5661998536af52848cc4d52a377e90368196edea"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38652",
    "datePublished": "2025-08-22T16:00:56.445Z",
    "dateReserved": "2025-04-16T04:51:24.030Z",
    "dateUpdated": "2025-11-03T17:40:45.643Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38652\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-08-22T16:15:40.057\",\"lastModified\":\"2025-11-03T18:16:33.207\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nf2fs: fix to avoid out-of-boundary access in devs.path\\n\\n- touch /mnt/f2fs/012345678901234567890123456789012345678901234567890123\\n- truncate -s $((1024*1024*1024)) \\\\\\n  /mnt/f2fs/012345678901234567890123456789012345678901234567890123\\n- touch /mnt/f2fs/file\\n- truncate -s $((1024*1024*1024)) /mnt/f2fs/file\\n- mkfs.f2fs /mnt/f2fs/012345678901234567890123456789012345678901234567890123 \\\\\\n  -c /mnt/f2fs/file\\n- mount /mnt/f2fs/012345678901234567890123456789012345678901234567890123 \\\\\\n  /mnt/f2fs/loop\\n\\n[16937.192225] F2FS-fs (loop0): Mount Device [ 0]: /mnt/f2fs/012345678901234567890123456789012345678901234567890123\\\\xff\\\\x01,      511,        0 -    3ffff\\n[16937.192268] F2FS-fs (loop0): Failed to find devices\\n\\nIf device path length equals to MAX_PATH_LEN, sbi-\u003edevs.path[] may\\nnot end up w/ null character due to path array is fully filled, So\\naccidently, fields locate after path[] may be treated as part of\\ndevice path, result in parsing wrong device path.\\n\\nstruct f2fs_dev_info {\\n...\\n\\tchar path[MAX_PATH_LEN];\\n...\\n};\\n\\nLet\u0027s add one byte space for sbi-\u003edevs.path[] to store null\\ncharacter of device path string.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: correcci\u00f3n para evitar el acceso fuera de los l\u00edmites en devs.path - touch /mnt/f2fs/0123456789012345678901234567890123456789012345678901234567890123 - truncate -s $((1024*1024*1024)) \\\\ /mnt/f2fs/012345678901234567890123456789012345678901234567890123 - touch /mnt/f2fs/file - truncate -s $((1024*1024*1024)) /mnt/f2fs/file - mkfs.f2fs /mnt/f2fs/0123456789012345678901234567890123456789012345678901234567890123 \\\\ -c /mnt/f2fs/file - mount /mnt/f2fs/012345678901234567890123456789012345678901234567890123 \\\\ /mnt/f2fs/loop [16937.192225] F2FS-fs (loop0): Montar dispositivo [ 0]: /mnt/f2fs/012345678901234567890123456789012345678901234567890123\\\\xff\\\\x01, 511, 0 - 3ffff [16937.192268] F2FS-fs (loop0): Error al encontrar dispositivos Si la longitud de la ruta del dispositivo es igual a MAX_PATH_LEN, sbi-\u0026gt;devs.path[] puede no terminar con un car\u00e1cter nulo debido a que la matriz de ruta est\u00e1 completamente llena, por lo que accidentalmente, los campos ubicados despu\u00e9s de path[] pueden tratarse como parte de la ruta del dispositivo, lo que da como resultado el an\u00e1lisis de una ruta de dispositivo incorrecta. Agreguemos un espacio de byte para que sbi-\u0026gt;devs.path[] almacene el car\u00e1cter nulo de la cadena de ruta del dispositivo.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1b1efa5f0e878745e94a98022e8edc675a87d78e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1cf1ff15f262e8baf12201b270b6a79f9d119b2d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/345fc8d1838f3f8be7c8ed08d86a13dedef67136\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3466721f06edff834f99d9f49f23eabc6b2cb78e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5661998536af52848cc4d52a377e90368196edea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/666b7cf6ac9aa074b8319a2b68cba7f2c30023f0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/70849d33130a2cf1d6010069ed200669c8651fbd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/755427093e4294ac111c3f9e40d53f681a0fbdaa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dc0172c74bd9edaee7bea2ebb35f3dbd37a8ae80\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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