CVE-2026-72263

Resource exhaustion via topology-loading memory leak

Published Aug 15, 2026 · Updated Aug 15, 2026

Memory leak in the ASoC SOF topology loader in Linux 6.19 allows local users to exhaust kernel memory through repeated topology loads. snd_sof_load_topology returns EINVAL when a filename contains dummy and tplg_cnt is zero without freeing the kcalloc-allocated tplg_files array. Low-privileged local access and repeated triggering are required; accumulated allocations can interrupt service without affecting confidentiality or integrity.

CVSS severity4.7
Medium
EPSS probability0.19%
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 ASoC SOF topology loader in Linux 6.19 allows local users to exhaust kernel memory through repeated topology loads. snd_sof_load_topology returns EINVAL when a filename contains dummy and tplg_cnt is zero without freeing the kcalloc-allocated tplg_files array. Low-privileged local access and repeated triggering are required; accumulated allocations can interrupt service without affecting confidentiality or integrity.

The record

CVE
CVE-2026-72263
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=6.19
  2. Affected versionversion=99c159279c6dfa2c4867c7f76875f58263f8f43b <6ed7787c43ecf4ae27a3e700cab53a1ed646c7f8
  3. Affected versionversion=99c159279c6dfa2c4867c7f76875f58263f8f43b <d46f9f23897261da53ffbeb89d48a13982ba7d28

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.19; version=99c159279c6dfa2c4867c7f76875f58263f8f43b <6ed7787c43ecf4ae27a3e700cab53a1ed646c7f8; version=99c159279c6dfa2c4867c7f76875f58263f8f43b <d46f9f23897261da53ffbeb89d48a13982ba7d28

Published CVSS scores

4.7SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
5.7SUSECVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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