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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2015-7550 Detail

Description

The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls.


Evaluator Description

CWE-476: NULL Pointer Dereference

Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b4a1b4f5047e4f54e194681125c74c0aa64d637d CVE, Inc., Red Hat Vendor Advisory 
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html CVE, Inc., Red Hat
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html CVE, Inc., Red Hat
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html CVE, Inc., Red Hat
http://www.debian.org/security/2016/dsa-3434 CVE, Inc., Red Hat
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.4 CVE, Inc., Red Hat Vendor Advisory 
http://www.securityfocus.com/bid/79903 CVE, Inc., Red Hat
http://www.ubuntu.com/usn/USN-2888-1 CVE, Inc., Red Hat
http://www.ubuntu.com/usn/USN-2890-1 CVE, Inc., Red Hat
http://www.ubuntu.com/usn/USN-2890-2 CVE, Inc., Red Hat
http://www.ubuntu.com/usn/USN-2890-3 CVE, Inc., Red Hat
http://www.ubuntu.com/usn/USN-2911-1 CVE, Inc., Red Hat
http://www.ubuntu.com/usn/USN-2911-2 CVE, Inc., Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1291197 CVE, Inc., Red Hat
https://github.com/torvalds/linux/commit/b4a1b4f5047e4f54e194681125c74c0aa64d637d CVE, Inc., Red Hat
https://security-tracker.debian.org/tracker/CVE-2015-7550 CVE, Inc., Red Hat

Weakness Enumeration

CWE-ID CWE Name Source
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') cwe source acceptance level NIST  
NVD-CWE-Other Other cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

11 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-7550
NVD Published Date:
02/07/2016
NVD Last Modified:
06/16/2026
Source:
Red Hat, Inc.