CVE-2015-8970

MEDIUM

Linux Kernel < 4.4.2 - Denial of Service via AF_ALG Socket Accept Without Setkey

Title source: llm
STIX 2.1

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.

References (11)

Core 11
Core References
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2437
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2444
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2077
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:1842
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://github.com/torvalds/linux/commit/dd504589577d8e8e70f51f997ad487a4cb6c026f
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/11/04/3
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1386286
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/94217

Scores

CVSS v3 5.5
EPSS 0.0050
EPSS Percentile 39.4%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-476
Status published
Products (1)
linux/linux_kernel < 4.4.1
Published Nov 28, 2016
Tracked Since Feb 18, 2026