CVE-2015-7972
low
CVSS v3
—
CVSS v2
2.1
VIR risk
2.1
Description
The (1) libxl_set_memory_target function in tools/libxl/libxl.c and (2) libxl__build_post function in tools/libxl/libxl_dom.c in Xen 3.4.x through 4.6.x do not properly calculate the balloon size when using the populate-on-demand (PoD) system, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors related to "heavy memory pressure."
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2015-7972
Vendor advisory: cve@mitre.org — http://xenbits.xen.org/xsa/advisory-153.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 4.6.0-1 |
| debian | bullseye | fixed | 4.6.0-1 |
| debian | forky | fixed | 4.6.0-1 |
| debian | sid | fixed | 4.6.0-1 |
| debian | trixie | fixed | 4.6.0-1 |
References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html
- http://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html
- http://support.citrix.com/article/CTX202404
- http://www.debian.org/security/2015/dsa-3414
- http://www.securityfocus.com/bid/77365
- http://www.securitytracker.com/id/1034036
- http://xenbits.xen.org/xsa/advisory-153.html
- https://security.gentoo.org/glsa/201604-03
- https://security-tracker.debian.org/tracker/CVE-2015-7972
CWEs
CWE-399
Verify integrity in audit chain (admin only). AS-IS.