FKIE_CVE-2021-45868

Vulnerability from fkie_nvd - Published: 2022-03-18 07:15 - Updated: 2026-06-17 04:14
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Summary
In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.
References
cve@mitre.orghttps://bugzilla.kernel.org/show_bug.cgi?id=214655Exploit, Issue Tracking, Vendor Advisory
cve@mitre.orghttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3Mailing List, Release Notes, Vendor Advisory
cve@mitre.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050Mailing List, Patch, Vendor Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20220419-0003/Third Party Advisory
cve@mitre.orghttps://www.openwall.com/lists/oss-security/2022/03/17/1Exploit, Mailing List, Patch, Third Party Advisory
cve@mitre.orghttps://www.openwall.com/lists/oss-security/2022/03/17/2Exploit, Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.kernel.org/show_bug.cgi?id=214655Exploit, Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3Mailing List, Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050Mailing List, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20220419-0003/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2022/03/17/1Exploit, Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2022/03/17/2Exploit, Mailing List, Patch, Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
netapp h300s_firmware -
netapp h300s -
netapp h700s_firmware -
netapp h700s -
netapp h300e_firmware -
netapp h300e -
netapp h500e_firmware -
netapp h500e -
netapp h700e_firmware -
netapp h700e -
netapp h410s_firmware -
netapp h410s -
netapp h410c_firmware -
netapp h410c -
netapp h500s_firmware -
netapp h500s -
To clipboard 

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    },
    {
      "lang": "es",
      "value": "En el kernel de Linux versiones anteriores a 5.15.3, el archivo fs/quota/quota_tree.c no comprueba el n\u00famero de bloque en el \u00e1rbol de cuotas (en disco). Esto puede, por ejemplo, conllevar a un uso de memoria previamente liberada del archivo kernel/locking/rwsem.c si se presenta un archivo de cuotas corrupto"
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  "id": "CVE-2021-45868",
  "lastModified": "2026-06-17T04:14:10.913",
  "metrics": {
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        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
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          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "version": "2.0"
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        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "scope": "UNCHANGED",
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  "published": "2022-03-18T07:15:06.597",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.