CVE-2026-74341
High
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: wcn36xx: fix heap overflow from oversized firmware HAL response The firmware response dispatcher copies all synchronous HAL responses into the 4096-byte hal_buf without validating the response length. A response exceeding WCN36XX_HAL_BUF_SIZE causes a heap buffer overflow with firmware-controlled content. Add a bounds check on the response length.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Linux
PublishedAug 15, 2026
First seenAug 15, 2026
How to fix
Update
- Linux Linux7acc1995bdcfdd82b2dd0dc735b1a4b076ae88a0, b80c4b5268c297b0503f65ef18038327e2119ad1, dae9cadf0925f1cbfb71306d60490890df3870a6, cfc67aee0c83e7f5d43a1dad3e25c789e9cc1d92, 15545ee71301e82d26d9a31b407ed0019eb62a60, 1b5d8a248c3afa640bcc99fa95abcd1e36f3ee18, 18813b90032bfaafb225906a4d2b51be4dfc02c3, 88a240d86d3d64521f9194abe185ac71cc74d0bd or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 8e84c25821698bdef73c0329fb2022a4673b7adc ≤ v < 7acc1995bdcfdd82b2dd0dc735b1a4b076ae88a0, 8e84c25821698bdef73c0329fb2022a4673b7adc ≤ v < b80c4b5268c297b0503f65ef18038327e2119ad1, 8e84c25821698bdef73c0329fb2022a4673b7adc ≤ v < dae9cadf0925f1cbfb71306d60490890df3870a6, 8e84c25821698bdef73c0329fb2022a4673b7adc ≤ v < cfc67aee0c83e7f5d43a1dad3e25c789e9cc1d92, 8e84c25821698bdef73c0329fb2022a4673b7adc ≤ v < 15545ee71301e82d26d9a31b407ed0019eb62a60, 8e84c25821698bdef73c0329fb2022a4673b7adc ≤ v < 1b5d8a248c3afa640bcc99fa95abcd1e36f3ee18, 8e84c25821698bdef73c0329fb2022a4673b7adc ≤ v < 18813b90032bfaafb225906a4d2b51be4dfc02c3, 8e84c25821698bdef73c0329fb2022a4673b7adc ≤ v < 88a240d86d3d64521f9194abe185ac71cc74d0bd, 3.13 | 7acc1995bdcfdd82b2dd0dc735b1a4b076ae88a0, b80c4b5268c297b0503f65ef18038327e2119ad1, dae9cadf0925f1cbfb71306d60490890df3870a6, cfc67aee0c83e7f5d43a1dad3e25c789e9cc1d92, 15545ee71301e82d26d9a31b407ed0019eb62a60, 1b5d8a248c3afa640bcc99fa95abcd1e36f3ee18, 18813b90032bfaafb225906a4d2b51be4dfc02c3, 88a240d86d3d64521f9194abe185ac71cc74d0bd |
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