x86/HVM pinned cache attributes mis-handling T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerab
Noroxi assessment
Priority: Monitor (action score 34/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 1.1% (FIRST EPSS); higher than 67.7% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: xen (Alpine:v3.15) 4.15.5-r0; xen (Alpine:v3.16) 4.16.4-r0; xen (Alpine:v3.18) 4.17.0-r5.
Low priority for now. Upgrade to xen (Alpine:v3.15) 4.15.5-r0; xen (Alpine:v3.16) 4.16.4-r0; xen (Alpine:v3.18) 4.17.0-r5 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
x86/HVM pinned cache attributes mis-handling T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To allow cachability control for HVM guests with passed through devices, an interface exists to explicitly override defaults which would otherwise be put in place. While not exposed to the affected guests themselves, the interface specifically exists for domains controlling such guests. This interface may therefore be used by not fully privileged entities, e.g. qemu running deprivileged in Dom0 or qemu running in a so called stub-domain. With this exposure it is an issue that - the number of the such controlled regions was unbounded (CVE-2022-42333), - installation and removal of such regions was not properly serialized (CVE-2022-42334).
- Published
- Mar 21, 2023
- Updated
- Jun 17, 2026
- EPSS
- 1.1% · 67th percentile
- CWE
- CWE-770
Report tools
Action score
34
Monitor
Low priority for now.
- CVSS
- 34 / 40 · 8.6 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.1%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| xen | xen | cpe:2.3:o:xen:xen |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux11.0
- fedoraproject fedora37
- fedoraproject fedora38
- xen xen4.11.0 and later · up to 4.17.0 inclusive
Versions reported by the vendor
Affected version ranges reported by the assigning authority (XEN). Independent of NVD's CPE analysis and usually ahead of it.
Xen xen
- consult Xen advisory XSA-428unknown
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.15 | xen | from 4.11.0 · before 4.15.5-r0 | 4.15.5-r0 |
| Alpine:v3.16 | xen | from 4.11.0 · before 4.16.4-r0 | 4.16.4-r0 |
| Alpine:v3.18 | xen | from 4.11.0 · before 4.17.0-r5 | 4.17.0-r5 |
| Debian:11 | xen | before 4.14.5+94-ge49571868d-1 | 4.14.5+94-ge49571868d-1 |
| Debian:12 | xen | before 4.17.0+74-g3eac216e6e-1 | 4.17.0+74-g3eac216e6e-1 |
| openSUSE:Leap Micro 5.3 | xen | before 4.16.3_06-150400.4.25.1 | 4.16.3_06-150400.4.25.1 |
| openSUSE:Tumbleweed | xen | before 4.17.0_06-1.1 | 4.17.0_06-1.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | xen | before 4.12.4_34-150100.3.86.1 | 4.12.4_34-150100.3.86.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | xen | before 4.13.4_20-150200.3.71.1 | 4.13.4_20-150200.3.71.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS | xen | before 4.14.5_12-150300.3.48.1 | 4.14.5_12-150300.3.48.1 |
| SUSE:Linux Enterprise Micro 5.3 | xen | before 4.16.3_06-150400.4.25.1 | 4.16.3_06-150400.4.25.1 |
| SUSE:Linux Enterprise Software Development Kit 12 SP5 | xen | before 4.12.4_34-3.88.1 | 4.12.4_34-3.88.1 |
| SUSE:OpenStack Cloud 9 | xen | before 4.11.4_38-2.89.1 | 4.11.4_38-2.89.1 |
Same product
xen: all recordsOther highest-scoring records for the same primary product.
- CVE-2017-10921The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, whi41Plan
- CVE-2017-10920The grant-table feature in Xen through 4.8.x mishandles a GNTMAP_device_map and GNTMAP_host_map mapping, when followed by only a GNTMAP_host41Plan
- CVE-2017-10918Xen through 4.8.x does not validate memory allocations during certain P2M operations, which allows guest OS users to obtain privileged host 41Plan
Published before and after this one in the same product
- ← EarlierCVE-2022-42331Mar 21, 2023 · x86: speculative vulnerability in 32bit SYSCALL path Due to an oversight in the very original Spectre/Meltdown security work (XSA-254), one 22Monitor
- ← EarlierCVE-2022-42332Mar 21, 2023 · x86 shadow plus log-dirty mode use-after-free In environments where host assisted address translation is necessary but Hardware Assisted Pag31Monitor
- Later →CVE-2022-42334Mar 21, 2023 · x86/HVM pinned cache attributes mis-handling T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerab26Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| alpine:xen | 4.15.5-r0 · Alpine:v3.15 | Package registry (OSV) |
| debian:xen | 4.17.0+74-g3eac216e6e-1 · Debian:12 | Package registry (OSV) |
| opensuse:xen | 4.16.3_06-150400.4.25.1 · openSUSE:Leap Micro 5.3 | Package registry (OSV) |
| suse:xen | 4.12.4_34-3.88.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5 | Package registry (OSV) |
| suse:xen | 4.16.3_06-150400.4.25.1 · SUSE:Linux Enterprise Micro 5.3 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- {'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'Aspectsthis issue were discovered by Andrew Cooper of XenServer and\nJan Beulich of SUSE.'}]}}}
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-770 · Allocation of Resources Without Limits or ThrottlingCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- FloodingCAPEC-125likelihood: High · Medium
- Excessive AllocationCAPEC-130likelihood: Medium · Medium
- XML Ping of the DeathCAPEC-147likelihood: Low · Medium
- Exponential Data ExpansionCAPEC-197likelihood: High · Medium
- Serialized Data Parameter BlowupCAPEC-229likelihood: High · High
- Serialized Data with Nested PayloadsCAPEC-230likelihood: Medium · High
- Oversized Serialized Data PayloadsCAPEC-231likelihood: Medium · High
- HTTP DoSCAPEC-469Low
ATT&CK techniques
- Network Denial of Service:Direct Network FloodT1498.001
- Network Denial of Service:Reflection AmplificationT1498.002
- Endpoint Denial of ServiceT1499
- Endpoint Denial of Service: OS Exhaustion FloodT1499.001
- Endpoint Denial of Service:Service Exhaustion FloodT1499.002
- Endpoint Denial of Service:Application Exhaustion FloodT1499.003
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (6 more)Show less
- xenbits.xen.org/xsa/advisory-428.html
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR/
- security.gentoo.org/glsa/202402-07
- www.debian.org/security/2023/dsa-5378
- xenbits.xenproject.org/xsa/advisory-428.txt
Vendor advisories and official records. Exploit/PoC links are deliberately left out.