Speculative Race Condition impacts modern CPU architectures that support speculative execution, also known as GhostRace.
Noroxi assessment
Priority: Monitor (action score 22/100)
- Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 1.2% (FIRST EPSS); higher than 69.6% of all records.
- Someone with local access to the system can trigger it. Administrator privileges are required. No user action is required. Special conditions such as timing or configuration are required.
- Fixed version: xen (Alpine:v3.16) 4.16.5-r7; xen (Alpine:v3.18) 4.17.3-r1; xen (Alpine:v3.19) 4.18.0-r4.
Low priority for now. Upgrade to xen (Alpine:v3.16) 4.16.5-r7; xen (Alpine:v3.18) 4.17.3-r1; xen (Alpine:v3.19) 4.18.0-r4 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
A Speculative Race Condition (SRC) vulnerability that impacts modern CPU architectures supporting speculative execution (related to Spectre V1) has been disclosed. An unauthenticated attacker can exploit this vulnerability to disclose arbitrary data from the CPU using race conditions to access the speculative executable code paths.
- Published
- Mar 15, 2024
- Updated
- Jun 17, 2026
- EPSS
- 1.2% · 69th percentile
- CWE
- CWE-362
Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Proof of concept exists, no weaponized module
- 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.
—
Versions reported by the vendor
Affected version ranges reported by the assigning authority (certcc). Independent of NVD's CPE analysis and usually ahead of it.
AMD CPU
- See advisory AMD-SB-7016affected
Xen Xen
- consult Xen advisory XSA-453affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.16 | xen | before 4.16.5-r7 | 4.16.5-r7 |
| Alpine:v3.18 | xen | before 4.17.3-r1 | 4.17.3-r1 |
| Alpine:v3.19 | xen | before 4.18.0-r4 | 4.18.0-r4 |
| Alpine:v3.20 | xen | before 4.18.0-r5 | 4.18.0-r5 |
| Debian:12 | linux | from 0 | — |
| Debian:12 | xen | before 4.17.5+23-ga4e5191dc0-1 | 4.17.5+23-ga4e5191dc0-1 |
| Debian:13 | xen | before 4.19.1-1 | 4.19.1-1 |
| openSUSE:Tumbleweed | xen | before 4.18.1_02-1.1 | 4.18.1_02-1.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | xen | before 4.13.5_12-150200.3.93.1 | 4.13.5_12-150200.3.93.1 |
| SUSE:Linux Enterprise Micro 5.1 | xen | before 4.14.6_12-150300.3.69.1 | 4.14.6_12-150300.3.69.1 |
| SUSE:Linux Enterprise Micro 5.3 | xen | before 4.16.5_14-150400.4.52.1 | 4.16.5_14-150400.4.52.1 |
| SUSE:Linux Enterprise Micro 5.3 | xen | before 4.16.5_14-150400.4.52.1 | 4.16.5_14-150400.4.52.1 |
| SUSE:Linux Enterprise Micro 5.5 | xen | before 4.17.3_08-150500.3.27.1 | 4.17.3_08-150500.3.27.1 |
| SUSE:Linux Enterprise Micro 5.5 | xen | before 4.17.3_08-150500.3.27.1 | 4.17.3_08-150500.3.27.1 |
| SUSE:Linux Enterprise Software Development Kit 12 SP5 | xen | before 4.12.4_46-3.106.1 | 4.12.4_46-3.106.1 |
Same product
amd: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-26400AMD processors may speculatively re-order load instructions which can result in stale data being observed when multiple processors are opera16Monitor
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 | 4.16.5-r7 · Alpine:v3.16 | Package registry (OSV) |
| debian:xen | 4.17.5+23-ga4e5191dc0-1 · Debian:12 | Package registry (OSV) |
| opensuse:xen | 4.16.5_14-150400.4.52.1 · openSUSE:Leap Micro 5.3 | Package registry (OSV) |
| suse:xen | 4.16.5_14-150400.4.52.1 · SUSE:Linux Enterprise Micro 5.3 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:0 | 2024-03-28 |
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.
- Published
- First PoC+12 d
- TodayOct 21, 2026+950 d
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.
- Hany Ragab and Cristiano Giuffrida from the VUSec group at VU Amsterdam and Andrea Mambretti and Anil KurmusIBM Research Europe, Zurich for discovering and reporting this vulnerabilityfinder
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
- Someone with local access to the system can trigger it.
- Administrator privileges are required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- none
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- None
Weakness class (CWE)
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
nvd-secondary
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)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (12 more)Show less
- download.vusec.net/papers/ghostrace_sec24.pdf
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=944d5fe50f3f03daacfea16300e656a1691c4a23
- ibm.github.io/system-security-research-updates/2024/03/12/ghostrace
- kb.cert.org/vuls/id/488902
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EIUICU6CVJUIB6BPJ7P5QTPQR5VOBHFK/
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/H63LGAQXPEVJOES73U4XK65I6DASOAAG/
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZON4TLXG7TG4A2XZG563JMVTGQW4SF3A/
- www.amd.com/en/resources/product-security/bulletin/amd-sb-7016.html
- www.kb.cert.org/vuls/id/488902
- www.vusec.net/projects/ghostrace/
- xenbits.xen.org/xsa/advisory-453.html
- xenbits.xen.org/xsa/advisory-453.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.