- It was found that the Linux kernel's ptrace subsystem allowed a traced
process' instruction pointer to be set to a non-canonical memory address
without forcing the non-sysret code path when returning to user space.
A local, unprivileged user could use this flaw to crash the system or,
potentially, escalate their privileges on the system. (CVE-2014-4699,
Important)
Note: The CVE-2014-4699 issue only affected systems using an Intel CPU.
- A flaw was found in the way the pppol2tp_setsockopt() and
pppol2tp_getsockopt() functions in the Linux kernel's PPP over L2TP
implementation handled requests with a non-SOL_PPPOL2TP socket option
level. A local, unprivileged user could use this flaw to escalate their
privileges on the system. (CVE-2014-4943, Important)
Bugs fixed (https://bugzilla.redhat.com/):
1115927 - CVE-2014-4699 kernel: x86_64: ptrace: sysret to non-canonical address
1119458 - CVE-2014-4943 kernel: net: pppol2tp: level handling in pppol2tp_[s,g]etsockopt()
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