CVE-2015-8872

Publication date 31 December 2015

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The set_fat function in fat.c in dosfstools before 4.0 might allow attackers to corrupt a FAT12 filesystem or cause a denial of service (invalid memory read and crash) by writing an odd number of clusters to the third to last entry on a FAT12 filesystem, which triggers an "off-by-two error."

Status

Show unmaintained releases

Package	Ubuntu Release	Status
dosfstools	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Fixed 3.0.28-2ubuntu0.1
	15.10 wily	Fixed 3.0.28-1ubuntu0.1
	14.04 LTS trusty	Fixed 3.0.26-1ubuntu0.1
	12.04 LTS precise	Fixed 3.0.12-1ubuntu1.3

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
dosfstools	Upstream: 39ce90f Upstream: 0790812

Severity score breakdown

Parameter	Value
Base score	6.2 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-2986-1
dosfstools vulnerabilities
31 May 2016