CVE-2025-21964 (GCVE-0-2025-21964)

Vulnerability from cvelistv5 – Published: 2025-04-01 15:47 – Updated: 2026-05-11 21:09
VLAI?
Title
cifs: Fix integer overflow while processing acregmax mount option
Summary
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix integer overflow while processing acregmax mount option User-provided mount parameter acregmax of type u32 is intended to have an upper limit, but before it is validated, the value is converted from seconds to jiffies which can lead to an integer overflow. Found by Linux Verification Center (linuxtesting.org) with SVACE.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5780464614f6abe6026f00cf5a0777aa453ba450 , < a13351624a6af8d91398860b8c9d4cf6c8e63de5 (git)
Affected: 5780464614f6abe6026f00cf5a0777aa453ba450 , < dd190168e60ac15408f074a1fe0ce36aff34027b (git)
Affected: 5780464614f6abe6026f00cf5a0777aa453ba450 , < 0252c33cc943e9e48ddfafaa6b1eb72adb68a099 (git)
Affected: 5780464614f6abe6026f00cf5a0777aa453ba450 , < 833f2903eb8b70faca7967319e580e9ce69729fc (git)
Affected: 5780464614f6abe6026f00cf5a0777aa453ba450 , < 5f500874ab9b3cc8c169c2ab49f00b838520b9c5 (git)
Affected: 5780464614f6abe6026f00cf5a0777aa453ba450 , < 7489161b1852390b4413d57f2457cd40b34da6cc (git)
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Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.15.180 , ≤ 5.15.* (semver)
Unaffected: 6.1.132 , ≤ 6.1.* (semver)
Unaffected: 6.6.84 , ≤ 6.6.* (semver)
Unaffected: 6.12.20 , ≤ 6.12.* (semver)
Unaffected: 6.13.8 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
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\"https://git.kernel.org/stable/c/5f500874ab9b3cc8c169c2ab49f00b838520b9c5\"}, {\"url\": \"https://git.kernel.org/stable/c/7489161b1852390b4413d57f2457cd40b34da6cc\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncifs: Fix integer overflow while processing acregmax mount option\\n\\nUser-provided mount parameter acregmax of type u32 is intended to have\\nan upper limit, but before it is validated, the value is converted from\\nseconds to jiffies which can lead to an integer overflow.\\n\\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.180\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.132\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.84\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.20\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13.8\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.14\", \"versionStartIncluding\": \"5.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:25:54.113Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-21964\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-01T19:26:31.943Z\", \"dateReserved\": \"2024-12-29T08:45:45.795Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-04-01T15:47:00.594Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Tags
Taxonomy of the tags.




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.



Detection rules are retrieved from Rulezet.