CVE-2015-2756 — Vulnetix

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CVE-2015-2756 PUBLISHED

QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.

EPSS 0.12% · 30.8th percentile

Risk Scores

EPSS Score

0.12%

30.8th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:14.04:LTS	qemu	0, 1.5.0+dfsg-3ubuntu5, 1.5.0+dfsg-3ubuntu6
Ubuntu:14.04:LTS	xen	0, 4.3.0-1ubuntu1, 4.3.0-1ubuntu2

Timeline

Apr 1, 2015 CVE Published
Feb 4, 2022 EPSS Score
Mar 28, 2022 EPSS Score
May 19, 2022 EPSS Score
Jul 10, 2022 EPSS Score
Sep 1, 2022 EPSS Score
Oct 23, 2022 EPSS Score
Dec 14, 2022 EPSS Score
Feb 4, 2023 EPSS Score
Mar 7, 2023 EPSS Score
Mar 28, 2023 EPSS Score
May 19, 2023 EPSS Score

References

https://ubuntu.com/security/CVE-2015-2756 third-party-advisory
http://xenbits.xen.org/xsa/advisory-126.html third-party-advisory
https://ubuntu.com/security/notices/USN-2608-1 vendor-advisory
https://www.cve.org/CVERecord?id=CVE-2015-2756 third-party-advisory

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