CVE-2015-7312 : Multiple race conditions in the Advanced Union Filesystem (aufs) aufs3-mmap.patch and aufs4-mmap.patch patches for the L

Multiple race conditions in the Advanced Union Filesystem (aufs) aufs3-mmap.patch and aufs4-mmap.patch patches for the Linux kernel 3.x and 4.x allow local users to cause a denial of service (use-after-free and BUG) or possibly gain privileges via a (1) madvise or (2) msync system call, related to mm/madvise.c and mm/msync.c.

Published 2015-11-16 11:59:10

Updated 2020-08-07 19:35:43

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory CorruptionDenial of service

Threat overview for CVE-2015-7312

Top countries where our scanners detected CVE-2015-7312

Top open port discovered on systems with this issue 49152

IPs affected by CVE-2015-7312 37,644

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2015-7312!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2015-7312

Probability of exploitation activity in the next 30 days: 0.04%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2015-7312

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.4	MEDIUM	AV:L/AC:M/Au:N/C:P/I:P/A:P	3.4	6.4	NIST
Access Vector: Local Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial

CWE ids for CVE-2015-7312

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

Assigned by: nvd@nist.gov (Primary)
CWE-416 Use After Free

Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2015-7312

http://www.debian.org/security/2015/dsa-3364

Debian -- Security Information -- DSA-3364-1 linux
Third Party Advisory

CVEs referencing this url
http://www.ubuntu.com/usn/USN-2777-1

USN-2777-1: Linux kernel (Utopic HWE) vulnerabilities | Ubuntu security notices
Third Party Advisory

CVEs referencing this url
http://www.openwall.com/lists/oss-security/2015/09/22/10

oss-security - Re: CVE request: Use-after-free in Linux kernel with aufs mmap patch
Mailing List;Third Party Advisory
http://sourceforge.net/p/aufs/mailman/message/34449209/

aufs / Re: concurrent msync triggers NULL pointer dereference
Exploit;Third Party Advisory

Products affected by CVE-2015-7312