CVE-2020-11725

Unspecified local impact via owner-field multiplication

Published Apr 12, 2020 · Updated May 29, 2026

Incorrect type conversion in Linux kernel 5.6.3 and earlier allows local users to cause unspecified impact through ALSA controls. snd_ctl_elem_add assigns info->owner to count, which then controls a private_size-by-count allocation-size multiplication. Kernel engineers dispute exploitability because both existing ioctl callers intentionally encode safe non-owner data in that field; relevance requires an unfamiliar new caller.

CVSS severity7.8
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect type conversion in Linux kernel 5.6.3 and earlier allows local users to cause unspecified impact through ALSA controls. snd_ctl_elem_add assigns info->owner to count, which then controls a private_size-by-count allocation-size multiplication. Kernel engineers dispute exploitability because both existing ioctl callers intentionally encode safe non-owner data in that field; relevance requires an unfamiliar new caller.

The record

CVE
CVE-2020-11725
Published
Apr 12, 2020
Updated
May 29, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-704
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 12, 2020CVE publishedPublication date reported by the CVE source.
  2. May 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-704Incorrect Type Conversion or Cast

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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