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CVE-2026-74341

wifi: wcn36xx: fix heap overflow from oversized firmware HAL response PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 8e84c25821698bdef73c0329fb2022a4673b7adc before dae9cadf0925f1cbfb71306d60490890df3870a6; affected 8e84c25821698bdef73c0329fb2022a4673b7adc before cfc67aee0c83e7f5d43a1dad3e25c789e9cc1d92; affected 8e84c25821698bdef73c0329fb2022a4673b7adc before 15545ee71301e82d26d9a31b407ed0019eb62a60; affected 8e84c25821698bdef73c0329fb2022a4673b7adc before 1b5d8a248c3afa640bcc99fa95abcd1e36f3ee18; affected 8e84c25821698bdef73c0329fb2022a4673b7adc before 18813b90032bfaafb225906a4d2b51be4dfc02c3; affected 8e84c25821698bdef73c0329fb2022a4673b7adc before 88a240d86d3d64521f9194abe185ac71cc74d0bd
Linux / Linuxaffected 3.13; unaffected 0 before 3.13; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through *

CWE

No CWE identifiers supplied.

References