CVE-2015-7550
CVE-2015-7550
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.
Productos afectados
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Hablar con TrueHacking →Referencias
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b4a1b4f5047e4f54e194681125c74c0aa64d637dhttp://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.htmlhttp://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.htmlhttp://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.htmlhttps://bugzilla.redhat.com/show_bug.cgi?id=1291197https://github.com/torvalds/linux/commit/b4a1b4f5047e4f54e194681125c74c0aa64d637dhttps://security-tracker.debian.org/tracker/CVE-2015-7550http://www.debian.org/security/2016/dsa-3434http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.4http://www.securityfocus.com/bid/79903http://www.ubuntu.com/usn/USN-2888-1http://www.ubuntu.com/usn/USN-2890-1