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CVE-2017-17863

Status: ModifiedHigh (7.8)—
Severity7.8High · CVSS 3.0
Exploitation probability0.41 %higher than 34% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

kernel/bpf/verifier.c in the Linux kernel 4.9.x through 4.9.71 does not check the relationship between pointer values and the BPF stack, which allows local users to cause a denial of service (integer overflow or invalid memory access) or possibly have unspecified other impact.

CVSS

Base score
7.8
Version
3.0
Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.41 %
Percentile among all scored CVEs
34
Score date
10/21/2026

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).

Affected technologies (2)

Debian — Debian LinuxLinux — Linux Kernel

CWEs

References

Show 14 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2017-17863",
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          "attackComplexity": "LOW",
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  "affected": [
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          "versions": [
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  "published": "2017-12-27T17:08:20.483",
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  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "kernel/bpf/verifier.c in the Linux kernel 4.9.x through 4.9.71 does not check the relationship between pointer values and the BPF stack, which allows local users to cause a denial of service (integer overflow or invalid memory access) or possibly have unspecified other impact."
    },
    {
      "lang": "es",
      "value": "kernel/bpf/verifier.c en el kernel de Linux, en versiones 4.9.x hasta la 4.9.71, no verifica la relación entre los valores de punteros y la pila BPF, lo que permite que los usuarios locales provoquen una denegación de servicio (desbordamiento de enteros o acceso a la memoria no válido) o, posiblemente, causar otros impactos no especificados."
    }
  ],
  "lastModified": "2026-06-17T01:11:47.623",
  "configurations": [
    {
      "nodes": [
        {
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              "versionEndIncluding": "4.9.71",
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  "sourceIdentifier": "cve@mitre.org"
}