NULL pointer dereference in Linux Kernel
CVE-2015-8551
The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to hit BUG conditions and cause a denial of service (NULL pointer dereference and host OS crash) by leveraging a system with access to a passed-through MSI or MSI-X capable physical PCI device and a crafted sequence of XEN_PCI_OP_* operations, aka "Linux pciback missing sanity checks."
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (38.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 7.0, 8.0
- openSUSE — versions 13.1
- SUSE Linux Enterprise Desktop — versions 11, 12
- SUSE Linux Enterprise Real Time Extension — versions 11, 12
- SUSE Linux Enterprise Server — versions 11, 12
- SUSE Linux Enterprise Software Development Kit — versions 11, 12
- SUSE Linux Enterprise Workstation Extension — versions 12
Weakness classification (CWE)
Public proof-of-concept exploits
References
- xenbits.xen.org/xsa/advisory-157.html (Vendor Advisory)
- www.securitytracker.com/id/1034480 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.html (vendor-advisory, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201604-03 (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.debian.org/security/2016/dsa-3434 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/79546 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2015-8551?
- CVE-2015-8551 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 6.0/10. Published 2016-04-13.
- How severe is CVE-2015-8551?
- Medium severity. CVSS v3 base score is 6.0 out of 10.
- Is CVE-2015-8551 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.