CVE-2015-8970

 

Published at: - 28-11-2016 04:59

Last modified: - 21-09-2022 08:44

Total changes: - 2

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

 

Verification logic

 

Reference

• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.2
• https://github.com/torvalds/linux/commit/dd504589577d8e8e70f51f997ad487a4cb6c026f
• https://bugzilla.redhat.com/show_bug.cgi?id=1386286
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dd504589577d8e8e70f51f997ad487a4cb6c026f
• [oss-security] 20161104 Re: CVE request -- linux kernel: crypto: GPF in lrw_crypt caused by null-deref-Mailing List, Third Party Advisory
• 94217-Third Party Advisory, VDB Entry
• RHSA-2017:2444-
• RHSA-2017:2437-
• RHSA-2017:2077-
• RHSA-2017:1842-
• https://groups.google.com/forum/#!msg/syzkaller/frb2XrB5aWk/xCXzkIBcDAAJ

 

Keywords

NVD

 

CVE-2015-8970

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures