Vulnerability Monitor

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CVE-2015-5706

Use-after-free vulnerability in the path_openat function in fs/namei.c in the Linux kernel 3.x and 4.x before 4.0.4 allows local users to cause a denial of service or possibly have unspecified other impact via O_TMPFILE filesystem operations that leverage a duplicate cleanup operation.

Security Impact Summary

CVE-2015-5706 is a security vulnerability that . Impacting 3 products from linux, from canonical, from debian organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2015, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2015-08-31T10:59:16.080

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.6 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

6.4

Weaknesses

Type: Primary
CWE-416

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	≤ 3.19.8	Yes
Operating System	linux	linux_kernel	< 4.0.4	Yes
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	debian	debian_linux	7.0	Yes
Operating System	debian	debian_linux	8.0	Yes

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f15133df088ecadd141ea1907f2c96df67c729f0 Patch, Vendor Advisory ([email protected])
http://twitter.com/grsecurity/statuses/597127122910490624 Broken Link ([email protected])
http://www.debian.org/security/2015/dsa-3329 Third Party Advisory ([email protected])
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.4 Release Notes, Vendor Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2015/08/01/5 Mailing List, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/76142 Third Party Advisory, VDB Entry ([email protected])
http://www.ubuntu.com/usn/USN-2680-1 Third Party Advisory ([email protected])
http://www.ubuntu.com/usn/USN-2681-1 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1250047 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://github.com/torvalds/linux/commit/f15133df088ecadd141ea1907f2c96df67c729f0 Patch, Third Party Advisory ([email protected])
https://source.android.com/security/bulletin/2017-01-01.html Patch, Third Party Advisory ([email protected])
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f15133df088ecadd141ea1907f2c96df67c729f0 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://twitter.com/grsecurity/statuses/597127122910490624 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2015/dsa-3329 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.4 Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/08/01/5 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/76142 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2680-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-2681-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1250047 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/torvalds/linux/commit/f15133df088ecadd141ea1907f2c96df67c729f0 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://source.android.com/security/bulletin/2017-01-01.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.