Oracle Linux: (CVE-2018-12896) ELSA-2018-4242: Unbreakable Enterprise kernel security update
Description
An issue was discovered in the Linux kernel through 4.17.3. An Integer Overflow in kernel/time/posix-timers.c in the POSIX timer code is caused by the way the overrun accounting works. Depending on interval and expiry time values, the overrun can be larger than INT_MAX, but the accounting is int based. This basically makes the accounting values, which are visible to user space via timer_getoverrun(2) and siginfo::si_overrun, random. For example, a local user can cause a denial of service (signed integer overflow) via crafted mmap, futex, timer_create, and timer_settime system calls.
Solution(s)
- oracle-linux-upgrade-kernel-uek
- oracle-linux-upgrade-kernel-uek-debug
- oracle-linux-upgrade-kernel-uek-debug-devel
- oracle-linux-upgrade-kernel-uek-devel
- oracle-linux-upgrade-kernel-uek-doc
- oracle-linux-upgrade-kernel-uek-headers
- oracle-linux-upgrade-kernel-uek-tools
- oracle-linux-upgrade-kernel-uek-tools-libs
- oracle-linux-upgrade-kernel-uek-tools-libs-devel
- oracle-linux-upgrade-perf
- oracle-linux-upgrade-python-perf
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