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SUSE: CVE-2018-12896: SUSE Linux Security Advisory

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SUSE: CVE-2018-12896: SUSE Linux Security Advisory

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:P)
Published
07/02/2018
Created
03/19/2019
Added
09/17/2018
Modified
02/04/2022

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)

  • suse-upgrade-kernel-azure-base
  • suse-upgrade-kernel-default
  • suse-upgrade-kernel-default-extra
  • suse-upgrade-kernel-default-man
  • suse-upgrade-kernel-devel-azure
  • suse-upgrade-kernel-docs
  • suse-upgrade-kernel-docs-azure
  • suse-upgrade-kernel-obs-build
  • suse-upgrade-kernel-source-azure

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