Use After Free in Linux Kernel
CVE-2015-7312
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.4 (Medium). Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.004 (30.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 14.04
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.debian.org/security/2015/dsa-3364 (vendor-advisory, Third Party Advisory)
- sourceforge.net/p/aufs/mailman/message/34449209/ (mailing-list, Exploit, Third Party Advisory)
- www.openwall.com/lists/oss-security/2015/09/22/10 (mailing-list, Mailing List, Third Party Advisory)
- www.ubuntu.com/usn/USN-2777-1 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2015-7312?
- CVE-2015-7312 is a vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). Published 2015-11-16.
- Is CVE-2015-7312 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.