FKIE_CVE-2021-47351

Vulnerability from fkie_nvd - Published: 2024-05-21 15:15 - Updated: 2025-05-12 19:55
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ubifs: Fix races between xattr_{set|get} and listxattr operations UBIFS may occur some problems with concurrent xattr_{set|get} and listxattr operations, such as assertion failure, memory corruption, stale xattr value[1]. Fix it by importing a new rw-lock in @ubifs_inode to serilize write operations on xattr, concurrent read operations are still effective, just like ext4. [1] https://lore.kernel.org/linux-mtd/20200630130438.141649-1-houtao1@huawei.com
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Fix races between xattr_{set|get} and listxattr operations\n\nUBIFS may occur some problems with concurrent xattr_{set|get} and\nlistxattr operations, such as assertion failure, memory corruption,\nstale xattr value[1].\n\nFix it by importing a new rw-lock in @ubifs_inode to serilize write\noperations on xattr, concurrent read operations are still effective,\njust like ext4.\n\n[1] https://lore.kernel.org/linux-mtd/20200630130438.141649-1-houtao1@huawei.com"
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ubifs: corrige ejecuci\u00f3ns entre las operaciones xattr_{set|get} y listxattr. UBIFS puede producir algunos problemas con las operaciones xattr_{set|get} y listxattr simult\u00e1neas, como fallas de aserci\u00f3n y corrupci\u00f3n de memoria. , valor xattr obsoleto [1]. Soluc\u00f3nelo importando un nuevo rw-lock en @ubifs_inode para serializar las operaciones de escritura en xattr, las operaciones de lectura simult\u00e1neas siguen siendo efectivas, al igual que ext4. [1] https://lore.kernel.org/linux-mtd/20200630130438.141649-1-houtao1@huawei.com"
    }
  ],
  "id": "CVE-2021-47351",
  "lastModified": "2025-05-12T19:55:22.127",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2024-05-21T15:15:21.553",
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      "source": "nvd@nist.gov",
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}


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