CVE-2025-21964
cifs: Fix integer overflow while processing acregmax mount option
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Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/0252c33cc943e9e48ddfafaa6b1eb72adb68a099
- https://git.kernel.org/stable/c/5f500874ab9b3cc8c169c2ab49f00b838520b9c5
- https://git.kernel.org/stable/c/7489161b1852390b4413d57f2457cd40b34da6cc
- https://git.kernel.org/stable/c/833f2903eb8b70faca7967319e580e9ce69729fc
- https://git.kernel.org/stable/c/a13351624a6af8d91398860b8c9d4cf6c8e63de5
References (7)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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