CVE-2015-8844
MEDIUMLinux Kernel < 4.3.5 - Denial of Service via MSR Bit Validation Bypass
Title source: llmDescription
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)
Core 8
Core References
Vendor Advisory x_refsource_confirm
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5
Mailing List mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/04/13/1
Vendor Advisory x_refsource_confirm
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d2b9d2a5ad5ef04ff978c9923d19730cb05efd55
Vendor Advisory vendor-advisory
x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2016-2574.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id/1035594
Patch x_refsource_confirm
https://github.com/torvalds/linux/commit/d2b9d2a5ad5ef04ff978c9923d19730cb05efd55
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1326540
Vendor Advisory vendor-advisory
x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2016-2584.html
Scores
CVSS v3
5.5
EPSS
0.0039
EPSS Percentile
30.6%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Details
CWE
CWE-20
Status
published
Products (1)
linux/linux_kernel
< 4.3.4
Published
Apr 27, 2016
Tracked Since
Feb 18, 2026