NULL Pointer Dereference Affecting perf package, versions <0:3.10.0-693.el7
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about NULL Pointer Dereference vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-CENTOS7-PERF-2085467
- published26 Jul 2021
- disclosed17 Dec 2015
Introduced: 17 Dec 2015
CVE-2015-8970 (opens in a new tab)How to fix?
Upgrade Centos:7 perf to version 0:3.10.0-693.el7 or higher.
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.
crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify that a setkey operation has been performed on an AF_ALG socket before an accept system call is processed, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted application that does not supply a key, related to the lrw_crypt function in crypto/lrw.c.
References
- http://www.securityfocus.com/bid/94217
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dd504589577d8e8e70f51f997ad487a4cb6c026f
- https://bugzilla.redhat.com/show_bug.cgi?id=1386286
- https://github.com/torvalds/linux/commit/dd504589577d8e8e70f51f997ad487a4cb6c026f
- https://groups.google.com/forum/#!msg/syzkaller/frb2XrB5aWk/xCXzkIBcDAAJ
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.2
- https://access.redhat.com/security/cve/CVE-2015-8970
- http://www.openwall.com/lists/oss-security/2016/11/04/3
- https://access.redhat.com/errata/RHSA-2017:1842
- https://groups.google.com/forum/#%21msg/syzkaller/frb2XrB5aWk/xCXzkIBcDAAJ