8.8

CVE-2017-12134: citrix xenserver Incorrect Calculation

Modified
AliasesUBUNTU-CVE-2017-12134DEBIAN-CVE-2017-12134
Published 24-08-2017Last modified 05-08-2024

Vulnerability summary

CVE-2017-12134 is a high (CVSS 8.8) Incorrect Calculation vulnerability in citrix xenserver. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 42.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.0 (NVD)
EPSS score
0.50%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 14 · Related 6
DLA-1099-1DSA-3981-1MGASA-2017-0342MGASA-2017-0343MGASA-2017-0344MGASA-2017-0345

Timeline

  1. 24-08-2017
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability calculation.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.50% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu15 products
  • linux< 3.13.0-149.199 | < 4.4.0-97.120
  • linux-aws< 4.4.0-1038.47
  • linux-azure< 4.13.0-1005.7
  • linux-azure-fdeAll versions (No fix recorded)
  • linux-gcp< 4.13.0-1002.5
Citrix1 product
  • xenserver6.0.2 | 6.2.0 | 6.5 | 7.0 | 7.1 | 7.2
Debian1 product
  • linux< 4.12.12-1

3 vendors · 17 products

References

18 links
Show all 18 references