CVE-2015-8844

MEDIUM

Linux Kernel < 4.3.4 - Improper Input Validation

Title source: rule

Description

The signal implementation in the Linux kernel before 4.3.5 on powerpc platforms does not check for an MSR with both the S and T bits set, which allows local users to cause a denial of service (TM Bad Thing exception and panic) via a crafted application.

References (8)

[Vendor Advisory] http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5

[Vendor Advisory] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d2b9d2a5ad5ef04ff978c9923d19730cb05efd55

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-2574.html

[Vendor Advisory] http://rhn.redhat.com/errata/RHSA-2016-2584.html

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1035594

[Issue Tracking] https://bugzilla.redhat.com/show_bug.cgi?id=1326540

[Patch] https://github.com/torvalds/linux/commit/d2b9d2a5ad5ef04ff978c9923d19730cb05efd55

[Mailing List] http://www.openwall.com/lists/oss-security/2016/04/13/1

Scores

CVSS v3 5.5

EPSS 0.0008

EPSS Percentile 24.6%

Attack Vector LOCAL

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

Classification

CWE

CWE-20

Status draft

Affected Products (1)

linux/linux_kernel < 4.3.4

Timeline

Published Apr 27, 2016

Tracked Since Feb 18, 2026