Denial of Service Vulnerability in Linux Kernel's AF_ALG Socket Handling

CVE-2015-8970 · MEDIUM Severity

AV:L/AC:L/AU:N/C:N/I:N/A:C

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.

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