CVE-2015-8550: novell suse_linux_enterprise_real_time_extension Improper Access Control
Vulnerability summary
CVE-2015-8550 is a high (CVSS 8.2) Improper Access Control vulnerability in novell suse_linux_enterprise_real_time_extension. EPSS estimates a 1.08% chance of exploitation in the next 30 days, higher than 65.1% of scored vulnerabilities.
Not severe (CVSS 8.2, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 25 · Related 17Timeline
- 14-04-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.
CVSS metrics
5 scores · 3 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated8.2HighCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.2HighCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS trend
Probability
1.08%
Chance of exploitation in the next 30 days
Percentile
65%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.08% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu23 products
- linux< 3.13.0-74.118
- linux-azureAll versions (No fix recorded)
- linux-azure-6.11All versions (No fix recorded)
- linux-azure-fdeAll versions (No fix recorded)
- linux-azure-fde-5.15< 5.15.0-1114.123~20.04.1
Debian3 products
- linux< 4.3.3-3
- qemu< 1:2.5+dfsg-2
- xen< 4.8.0~rc3-1
Novell1 product
Xen1 product
- xenna
4 vendors · 28 products
References
24 links- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlX Refsource CONFIRM
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory