CVE-2026-72302

Out-of-bounds access via overflowed control size

Published Aug 15, 2026 · Updated Aug 15, 2026

Integer overflow in ASoC SOF IPC3 control handling in Linux 5.18 and later allows local users to trigger out-of-bounds access. In sof_ipc3_control_update(), firmware-provided cdata->num_elems can overflow expected_size on 32-bit platforms, letting a mismatched cdata->rhdr.hdr.size pass validation before snd_sof_update_control accesses data out of bounds. Reachability requires a 32-bit system using the affected ASoC SOF IPC3 control path; published sources do not specify whether the final effect is a crash, data exposure, or code execution.

CVSS severity7.8
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in ASoC SOF IPC3 control handling in Linux 5.18 and later allows local users to trigger out-of-bounds access. In sof_ipc3_control_update(), firmware-provided cdata->num_elems can overflow expected_size on 32-bit platforms, letting a mismatched cdata->rhdr.hdr.size pass validation before snd_sof_update_control accesses data out of bounds. Reachability requires a 32-bit system using the affected ASoC SOF IPC3 control path; published sources do not specify whether the final effect is a crash, data exposure, or code execution.

The record

CVE
CVE-2026-72302
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-680
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=10f461d79c2d1afb22344986cc1b4631169cf25e <312c7d2ebe696da3f885eee77d52297664e57c53
  2. Affected versionversion=10f461d79c2d1afb22344986cc1b4631169cf25e <6856b3c23b0995eefad5a6142b4365ef70e1fe4a
  3. Affected versionversion=10f461d79c2d1afb22344986cc1b4631169cf25e <711d912b18763af62a63aa8f2419a774eb63bba4
  4. Affected versionversion=10f461d79c2d1afb22344986cc1b4631169cf25e <8791977d7289f6e9d2b014f60a5455f053a7bc04
  5. Affected versionversion=10f461d79c2d1afb22344986cc1b4631169cf25e <89a2309a9eec80d4c19e3aed62c4f923594d1911
  6. Affected versionversion=10f461d79c2d1afb22344986cc1b4631169cf25e <ffd79e77f2fbacd7a5d40ad1d4c7f3f089a8f2f3
  7. Affected versionversion=5.18

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=10f461d79c2d1afb22344986cc1b4631169cf25e <312c7d2ebe696da3f885eee77d52297664e57c53; version=10f461d79c2d1afb22344986cc1b4631169cf25e <6856b3c23b0995eefad5a6142b4365ef70e1fe4a; version=10f461d79c2d1afb22344986cc1b4631169cf25e <711d912b18763af62a63aa8f2419a774eb63bba4; version=10f461d79c2d1afb22344986cc1b4631169cf25e <8791977d7289f6e9d2b014f60a5455f053a7bc04; version=10f461d79c2d1afb22344986cc1b4631169cf25e <89a2309a9eec80d4c19e3aed62c4f923594d1911; version=10f461d79c2d1afb22344986cc1b4631169cf25e <ffd79e77f2fbacd7a5d40ad1d4c7f3f089a8f2f3; version=5.18

Published CVSS scores

5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.3Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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-680Integer Overflow to Buffer Overflow

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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