CVE-2022-50051

Memory corruption via snprintf length overcount

Published Jun 18, 2025 · Updated May 11, 2026

Out-of-bounds write in the ASoC SOF debug component of Linux allows local users to corrupt kernel memory through a debugfs read. The memory_info_update function adds snprintf's would-have-been output length to its buffer offset, so truncation can advance the next write beyond the allocated buffer. Reachability requires a configured SOF device and access to its memory_info debugfs file; the debugfs root is restricted to root by default.

CVSS severity7.8
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in the ASoC SOF debug component of Linux allows local users to corrupt kernel memory through a debugfs read. The memory_info_update function adds snprintf's would-have-been output length to its buffer offset, so truncation can advance the next write beyond the allocated buffer. Reachability requires a configured SOF device and access to its memory_info debugfs file; the debugfs root is restricted to root by default.

The record

CVE
CVE-2022-50051
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-787, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.11
  2. Affected versionversion=5b10b62989219aa527ee4fa555d1995a3b70981b <1eb123ce985e6cf302ac6e3f19862d132d86fa8f
  3. Affected versionversion=5b10b62989219aa527ee4fa555d1995a3b70981b <a67971a17604ae7de278fb09243432459afc51e1
  4. Affected versionversion=5b10b62989219aa527ee4fa555d1995a3b70981b <b318b9dd2ac67f39d0338ce563879d1f59a0347a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.11; version=5b10b62989219aa527ee4fa555d1995a3b70981b <1eb123ce985e6cf302ac6e3f19862d132d86fa8f; version=5b10b62989219aa527ee4fa555d1995a3b70981b <a67971a17604ae7de278fb09243432459afc51e1; version=5b10b62989219aa527ee4fa555d1995a3b70981b <b318b9dd2ac67f39d0338ce563879d1f59a0347a

Published CVSS scores

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.

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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-787Out-of-bounds Write
T1068Exploitation for Privilege Escalation

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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