CVE-2007-4571

Status: ModifiedLow (2.1)—Exploit

Severity2.1Low · CVSS 2.0

Exploitation probability0.76 %higher than 55% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitAvailablePublished on Exploit-DB

The snd_mem_proc_read function in sound/core/memalloc.c in the Advanced Linux Sound Architecture (ALSA) in the Linux kernel before 2.6.22.8 does not return the correct write size, which allows local users to obtain sensitive information (kernel memory contents) via a small count argument, as demonstrated by multiple reads of /proc/driver/snd-page-alloc.

CVSS

Base score: 2.1
Version: 2.0
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.76 %
Percentile among all scored CVEs: 55
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).

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.

Published on Exploit-DB · Linux Kernel 2.6.x - ALSA snd-page-alloc Local Proc File Information Disclosure (9/21/2007)

Affected technologies (1)

Linux — Linux Kernel

CWEs

NVD-CWE-Other

References

Show 58 references

Raw JSON (NVD)

Show

{
  "id": "CVE-2007-4571",
  "cveTags": [],
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          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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  "published": "2007-09-26T10:17:00.000",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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  "descriptions": [
    {
      "lang": "en",
      "value": "The snd_mem_proc_read function in sound/core/memalloc.c in the Advanced Linux Sound Architecture (ALSA) in the Linux kernel before 2.6.22.8 does not return the correct write size, which allows local users to obtain sensitive information (kernel memory contents) via a small count argument, as demonstrated by multiple reads of /proc/driver/snd-page-alloc."
    },
    {
      "lang": "es",
      "value": "La función snd_mem_proc_read en sound/core/memalloc.c de Advanced Linux Sound Architecture (ALSA) en el núcleo de Linux anterior a 2.6.22.8 no devuelve el tamaño de escritura correcto, lo cual permite a usuarios locales obtener información sensible (contenidos de la memoria del núcleo) mediante un argumento de cuenta pequeño, como ha sido demostrado mediante múltiples lecturas de /proc/driver/snd-page-alloc."
    }
  ],
  "lastModified": "2026-06-16T22:44:21.123",
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      "nodes": [
        {
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  "vendorComments": [
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      "comment": "This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 2.1 or 3.",
      "lastModified": "2007-10-18T00:00:00",
      "organization": "Red Hat"
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  "sourceIdentifier": "secalert@redhat.com"
}