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)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6639 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e4b3cbd840e565484d0ad8d260d27c057466ed17 , < fbdb43f6bb2a15ed382d6eb0ef82c8b07b0d47bb (git)
Affected: e4b3cbd840e565484d0ad8d260d27c057466ed17 , < bd15a5deb5a7251dc1a0cf9186f0253f7eacdb97 (git)
Affected: e4b3cbd840e565484d0ad8d260d27c057466ed17 , < 88c4bd90725557796c15878b7cb70066e9e6b5ab (git)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
Show details on NVD website
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      "title": "kernel: firmware: thead: Fix buffer overflow and use standard endian macros",
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}



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