Vulnerability Details : CVE-2015-7549
The MSI-X MMIO support in hw/pci/msix.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by leveraging failure to define the .write method.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2015-7549
- cpe:2.3:a:qemu:qemu:*:r1:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-7549
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-7549
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
6.0
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H |
1.5
|
4.0
|
NIST |
CWE ids for CVE-2015-7549
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-7549
-
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=43b11a91dd861a946b231b89b754285
QEMU · GitLab
-
http://www.debian.org/security/2016/dsa-3471
Debian -- Security Information -- DSA-3471-1 qemuIssue Tracking;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2015/12/14/2
oss-security - CVE-2015-7549 Qemu: pci: msi-x: null pointer dereference issueIssue Tracking;Mailing List;Third Party Advisory
-
https://security.gentoo.org/glsa/201602-01
QEMU: Multiple vulnerabilities (GLSA 201602-01) — Gentoo securityIssue Tracking;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1291137
1291137 – (CVE-2015-7549) CVE-2015-7549 Qemu: pci: null pointer dereference issueIssue Tracking;Third Party Advisory
-
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175380.html
[SECURITY] Fedora 23 Update: qemu-2.4.1-5.fc23Issue Tracking;Third Party Advisory
-
http://www.securityfocus.com/bid/80761
QEMU 'hw/pci/msix.c' Null Pointer Dereference Denial of Service VulnerabilityThird Party Advisory;VDB Entry
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