RedhatCVELIST:CVE-2015-8970CVE-2015-8970
crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify that a setkey operation has been performed on an AF_ALG socket before an accept system call is processed, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted application that does not supply a key, related to the lrw_crypt function in crypto/lrw.c.
References
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dd504589577d8e8e70f51f997ad487a4cb6c026f
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.2
www.openwall.com/lists/oss-security/2016/11/04/3
www.securityfocus.com/bid/94217
access.redhat.com/errata/RHSA-2017:1842
access.redhat.com/errata/RHSA-2017:2077
access.redhat.com/errata/RHSA-2017:2437
access.redhat.com/errata/RHSA-2017:2444
bugzilla.redhat.com/show_bug.cgi?id=1386286
github.com/torvalds/linux/commit/dd504589577d8e8e70f51f997ad487a4cb6c026f
groups.google.com/forum/#%21msg/syzkaller/frb2XrB5aWk/xCXzkIBcDAAJ
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