CVE-2022-48776

Kernel memory exhaustion via unreleased partition array

Published Jul 16, 2024 · Updated May 23, 2026

Memory leak in the Qualcomm SMEM MTD parser in affected Linux 5.x releases allows local users to exhaust kernel memory. The parse_qcomsmem_cleanup function frees every partition name but fails to release the pparts array after parser cleanup. Exploitation requires local low-privileged access and a system using the Qualcomm SMEM partition parser; published material does not identify the trigger path.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the Qualcomm SMEM MTD parser in affected Linux 5.x releases allows local users to exhaust kernel memory. The parse_qcomsmem_cleanup function frees every partition name but fails to release the pparts array after parser cleanup. Exploitation requires local low-privileged access and a system using the Qualcomm SMEM partition parser; published material does not identify the trigger path.

The record

CVE
CVE-2022-48776
Published
Jul 16, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 16, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=10f3b4d79958d6f9f71588c6fa862159c83fa80f <1b37889f9a151d26a3fb0d3870f6e1046dee2e24
  2. Affected versionversion=10f3b4d79958d6f9f71588c6fa862159c83fa80f <3dd8ba961b9356c4113b96541c752c73d98fef70
  3. Affected versionversion=10f3b4d79958d6f9f71588c6fa862159c83fa80f <3eb5185896a68373714dc7d0009111744adc3345
  4. Affected versionversion=5.12.17 <5.13
  5. Affected versionversion=5.13.2 <5.14
  6. Affected versionversion=5.14
  7. Affected versionversion=765beb5ef9da4fecb50210decd55dd24187a0698
  8. Affected versionversion=af86e36c583300e10a52e3b3348c88a69fc0c552

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=10f3b4d79958d6f9f71588c6fa862159c83fa80f <1b37889f9a151d26a3fb0d3870f6e1046dee2e24; version=10f3b4d79958d6f9f71588c6fa862159c83fa80f <3dd8ba961b9356c4113b96541c752c73d98fef70; version=10f3b4d79958d6f9f71588c6fa862159c83fa80f <3eb5185896a68373714dc7d0009111744adc3345; version=5.12.17 <5.13; version=5.13.2 <5.14; version=5.14; version=765beb5ef9da4fecb50210decd55dd24187a0698; version=af86e36c583300e10a52e3b3348c88a69fc0c552

Published CVSS scores

5.5NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service

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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