CVE-2026-31690

Unspecified impact via unsafe resource pointer arithmetic

Published Apr 27, 2026 · Updated Apr 27, 2026

Out-of-bounds access in the Linux kernel 6.15 through 6.19.12 allows attackers to cause unspecified impact via unspecified vectors. The TH1520 AON firmware protocol driver uses pointer arithmetic on resource to reach the adjacent mode member, causing a static bounds warning on the packed request structure. Ubuntu reports that the write reaches the intended adjacent field and causes no memory corruption, so no exploitable security consequence has been demonstrated.

CVSS severity7.8
High
EPSS probability0.13%
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 access in the Linux kernel 6.15 through 6.19.12 allows attackers to cause unspecified impact via unspecified vectors. The TH1520 AON firmware protocol driver uses pointer arithmetic on resource to reach the adjacent mode member, causing a static bounds warning on the packed request structure. Ubuntu reports that the write reaches the intended adjacent field and causes no memory corruption, so no exploitable security consequence has been demonstrated.

The record

CVE
CVE-2026-31690
Published
Apr 27, 2026
Updated
Apr 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 27, 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=6.15
  2. Affected versionversion=e4b3cbd840e565484d0ad8d260d27c057466ed17 <88c4bd90725557796c15878b7cb70066e9e6b5ab
  3. Affected versionversion=e4b3cbd840e565484d0ad8d260d27c057466ed17 <bd15a5deb5a7251dc1a0cf9186f0253f7eacdb97
  4. Affected versionversion=e4b3cbd840e565484d0ad8d260d27c057466ed17 <fbdb43f6bb2a15ed382d6eb0ef82c8b07b0d47bb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.15; version=e4b3cbd840e565484d0ad8d260d27c057466ed17 <88c4bd90725557796c15878b7cb70066e9e6b5ab; version=e4b3cbd840e565484d0ad8d260d27c057466ed17 <bd15a5deb5a7251dc1a0cf9186f0253f7eacdb97; version=e4b3cbd840e565484d0ad8d260d27c057466ed17 <fbdb43f6bb2a15ed382d6eb0ef82c8b07b0d47bb

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.

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-787Out-of-bounds Write

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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