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CVE-2018-7273

Status: ModifiedMedium (5.5)—Exploit
Severity5.5Medium · CVSS 3.0
Exploitation probability1.76 %higher than 78% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitAvailablePublished on Exploit-DB · Proof of concept on GitHub (unverified)

In the Linux kernel through 4.15.4, the floppy driver reveals the addresses of kernel functions and global variables using printk calls within the function show_floppy in drivers/block/floppy.c. An attacker can read this information from dmesg and use the addresses to find the locations of kernel code and data and bypass kernel security protections such as KASLR.

CVSS

Base score
5.5
Version
3.0
Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
1.76 %
Percentile among all scored CVEs
78
Score date
10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (1)

Linux — Linux Kernel

CWEs

References

Show 6 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2018-7273",
  "cveTags": [],
  "metrics": {
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          "vectorString": "AV:L/AC:L/Au:N/C:C/I:N/A:N",
          "authentication": "NONE",
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    "cvssMetricV30": [
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          "integrityImpact": "NONE",
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          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
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          "confidentialityImpact": "HIGH"
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  "affected": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-200"
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel through 4.15.4, the floppy driver reveals the addresses of kernel functions and global variables using printk calls within the function show_floppy in drivers/block/floppy.c. An attacker can read this information from dmesg and use the addresses to find the locations of kernel code and data and bypass kernel security protections such as KASLR."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux hasta la versión 4.15.4, el controlador del disquete revela las direcciones de las funciones del kernel y las variables globales empleando llamadas printk en la función show_floppy en drivers/block/floppy.c. Un atacante puede leer esta información de dmesg y emplear las direcciones para encontrar las localizaciones del código y los datos del kernel y omitir las protecciones de seguridad como KASLR."
    }
  ],
  "lastModified": "2026-06-17T02:02:56.007",
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              "versionEndIncluding": "4.15.4"
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          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}