title: Use of Externally-Controlled Format String in umlaeute/v4l2loopback
description: Depending on the way the format strings in the card label are crafted it's possible to leak kernel stack memory. There is also the possibility for DoS due to the v4l2loopback kernel module crashing when providing the card label on request (reproduce e.g. with many %s modifiers in a row).
problem types: CWE-134 Use of Externally-Controlled Format String
affected:
{
product: umlaeute/v4l2loopback
vendor: umlaeute
versions:
lessThan: 0.12.6, status: affected, version: unspecified, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: LOW
baseScore: 7.3
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: LOW
privilegesRequired: HIGH
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:L
version: 3.0
]