Information Exposure Affecting perf package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CENTOS7-PERF-1970787
- published26 Jul 2021
- disclosed15 Sept 2016
Introduced: 15 Sep 2016
CVE-2016-9178 (opens in a new tab)How to fix?
There is no fixed version for Centos:7 perf.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel before 4.7.5 does not initialize a certain integer variable, which allows local users to obtain sensitive information from kernel stack memory by triggering failure of a get_user_ex call.
References
- http://www.securityfocus.com/bid/94144
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1c109fabbd51863475cd12ac206bdd249aee35af
- https://bugzilla.redhat.com/show_bug.cgi?id=1391908
- https://github.com/torvalds/linux/commit/1c109fabbd51863475cd12ac206bdd249aee35af
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5
- https://access.redhat.com/security/cve/CVE-2016-9178
- http://www.openwall.com/lists/oss-security/2016/11/04/4