Race condition in the install_user_keyrings function in
security/keys/process_keys.c in the Linux kernel before 3.8.3 allows
local users to cause a denial of service (NULL pointer dereference and
system crash) via crafted keyctl system calls that trigger keyring
operations in simultaneous threads.
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MLIST:[oss-security] 20130307 CVE-2013-1792 Linux kernel: KEYS: race with concurrent install_user_keyrings()
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