CVE-2015-7835
UnknownEPSS 0.43%
Last modified
CVE-2015-7835 is a vulnerability of currently unknown severity. The mod_l2_entry function in arch/x86/mm.c in Xen 3.4 through 4.6.x does not properly validate level 2 page table entries, which allows local PV guest administrators to gain privileges via a crafted superpage mapping.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.
Description
The mod_l2_entry function in arch/x86/mm.c in Xen 3.4 through 4.6.x does not properly validate level 2 page table entries, which allows local PV guest administrators to gain privileges via a crafted superpage mapping.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | 3.4.0 |
| Xen | Xen | 3.4.1 |
| Xen | Xen | 3.4.2 |
| Xen | Xen | 3.4.3 |
| Xen | Xen | 3.4.4 |
| Xen | Xen | 4.0.0 |
| Xen | Xen | 4.0.1 |
| Xen | Xen | 4.0.2 |
| Xen | Xen | 4.0.3 |
| Xen | Xen | 4.0.4 |
| Xen | Xen | 4.1.0 |
| Xen | Xen | 4.1.1 |
| Xen | Xen | 4.1.2 |
| Xen | Xen | 4.1.3 |
| Xen | Xen | 4.1.4 |
| Xen | Xen | 4.1.5 |
| Xen | Xen | 4.1.6.1 |
| Xen | Xen | 4.2.0 |
| Xen | Xen | 4.2.1 |
| Xen | Xen | 4.2.2 |
| Xen | Xen | 4.2.3 |
| Xen | Xen | 4.3.0 |
| Xen | Xen | 4.3.1 |
| Xen | Xen | 4.3.2 |
| Xen | Xen | 4.3.4 |
| Xen | Xen | 4.4.0 |
| Xen | Xen | 4.4.1 |
| Xen | Xen | 4.5.0 |
| Xen | Xen | 4.5.1 |
| Xen | Xen | 4.6.0 |
References
- http://xenbits.xen.org/xsa/advisory-148.htmlVendor Advisory
- http://xenbits.xen.org/xsa/advisory-148.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2015-7835?
The mod_l2_entry function in arch/x86/mm.c in Xen 3.4 through 4.6.x does not properly validate level 2 page table entries, which allows local PV guest administrators to gain privileges via a crafted superpage mapping.
How severe is CVE-2015-7835?
Severity scoring for CVE-2015-7835 is pending analysis. The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.
How do I fix CVE-2015-7835?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2015
- CVE-2015-7828SAP HANA Database 1.00 SPS10 and earlier do not require auth…
- CVE-2015-7829Adobe Reader and Acrobat 10.x before 10.1.16 and 11.x before…
- CVE-2015-7830The pcapng_read_if_descr_block function in wiretap/pcapng.c …
- CVE-2015-7831In Cloudera Hue, there is privilege escalation by a read-onl…8.8
- CVE-2015-7833The usbvision driver in the Linux kernel package 3.10.0-123.…
- CVE-2015-7834Multiple unspecified vulnerabilities in Google V8 before 4.6…
- CVE-2015-7836Siemens RUGGEDCOM ROS before 4.2.1 allows remote attackers t…
- CVE-2015-7837The Linux kernel, as used in Red Hat Enterprise Linux 7, ker…
- CVE-2015-7838ProcessFileUpload.jsp in SolarWinds Storage Manager before 6…
- CVE-2015-7839SolarWinds Log and Event Manager (LEM) allows remote attacke…
- CVE-2015-7840The command line management console (CMC) in SolarWinds Log …
- CVE-2015-7841The login page of the server on Huawei FusionServer rack ser…
Are you affected by CVE-2015-7835?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST