CVE-2026-31690 (GCVE-0-2026-31690)
Vulnerability from cvelistv5 – Published: 2026-04-27 17:34 – Updated: 2026-05-11 22:13
VLAI
Title
firmware: thead: Fix buffer overflow and use standard endian macros
Summary
In the Linux kernel, the following vulnerability has been resolved:
firmware: thead: Fix buffer overflow and use standard endian macros
Addresses two issues in the TH1520 AON firmware protocol driver:
1. Fix a potential buffer overflow where the code used unsafe pointer
arithmetic to access the 'mode' field through the 'resource' pointer
with an offset. This was flagged by Smatch static checker as:
"buffer overflow 'data' 2 <= 3"
2. Replace custom RPC_SET_BE* and RPC_GET_BE* macros with standard
kernel endianness conversion macros (cpu_to_be16, etc.) for better
portability and maintainability.
The functionality was re-tested with the GPU power-up sequence,
confirming the GPU powers up correctly and the driver probes
successfully.
[ 12.702370] powervr ffef400000.gpu: [drm] loaded firmware
powervr/rogue_36.52.104.182_v1.fw
[ 12.711043] powervr ffef400000.gpu: [drm] FW version v1.0 (build
6645434 OS)
[ 12.719787] [drm] Initialized powervr 1.0.0 for ffef400000.gpu on
minor 0
Severity
7.8 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
e4b3cbd840e565484d0ad8d260d27c057466ed17 , < fbdb43f6bb2a15ed382d6eb0ef82c8b07b0d47bb
(git)
Affected: e4b3cbd840e565484d0ad8d260d27c057466ed17 , < bd15a5deb5a7251dc1a0cf9186f0253f7eacdb97 (git) Affected: e4b3cbd840e565484d0ad8d260d27c057466ed17 , < 88c4bd90725557796c15878b7cb70066e9e6b5ab (git) |
|
| Linux | Linux |
Affected:
6.15
Unaffected: 0 , < 6.15 (semver) Unaffected: 6.18.23 , ≤ 6.18.* (semver) Unaffected: 6.19.13 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
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"programFiles": [
"drivers/firmware/thead,th1520-aon.c",
"include/linux/firmware/thead/thead,th1520-aon.h"
],
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}
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"url": "https://git.kernel.org/stable/c/88c4bd90725557796c15878b7cb70066e9e6b5ab"
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"title": "firmware: thead: Fix buffer overflow and use standard endian macros",
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"datePublished": "2026-04-27T17:34:28.738Z",
"dateReserved": "2026-03-09T15:48:24.131Z",
"dateUpdated": "2026-05-11T22:13:45.476Z",
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"date": "2026-06-14",
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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