CVE-2015-8970

MEDIUM

Linux Kernel < 4.4.1 - NULL Pointer Dereference

Title source: rule

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)

[Issue Tracking, Patch, Vendor Advisory] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dd504589577d8e8e70f51f997ad487a4cb6c026f

[Release Notes] http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.2

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2016/11/04/3

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/94217

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2017:1842

[Issue Tracking] https://bugzilla.redhat.com/show_bug.cgi?id=1386286

[Issue Tracking, Patch, Third Party Advisory] https://github.com/torvalds/linux/commit/dd504589577d8e8e70f51f997ad487a4cb6c026f

[Mailing List] https://groups.google.com/forum/#%21msg/syzkaller/frb2XrB5aWk/xCXzkIBcDAAJ

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2017:2077

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2017:2437

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2017:2444

Scores

CVSS v3 5.5

EPSS 0.0004

EPSS Percentile 11.2%

Attack Vector LOCAL

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

Classification

CWE

CWE-476

Status published

Affected Products (2)

linux/linux_kernel < 4.4.1

n/a/n/a

Timeline

Published Nov 28, 2016

Tracked Since Feb 18, 2026