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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74341
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:35 UTC
Updated2026-08-15 06:22:35 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 8e84c25821698bdef73c0329fb2022a4673b7adc dae9cadf0925f1cbfb71306d60490890df3870a6 git Not specified
CNA Linux Linux affected 8e84c25821698bdef73c0329fb2022a4673b7adc cfc67aee0c83e7f5d43a1dad3e25c789e9cc1d92 git Not specified
CNA Linux Linux affected 8e84c25821698bdef73c0329fb2022a4673b7adc 15545ee71301e82d26d9a31b407ed0019eb62a60 git Not specified
CNA Linux Linux affected 8e84c25821698bdef73c0329fb2022a4673b7adc 1b5d8a248c3afa640bcc99fa95abcd1e36f3ee18 git Not specified
CNA Linux Linux affected 8e84c25821698bdef73c0329fb2022a4673b7adc 18813b90032bfaafb225906a4d2b51be4dfc02c3 git Not specified
CNA Linux Linux affected 8e84c25821698bdef73c0329fb2022a4673b7adc 88a240d86d3d64521f9194abe185ac71cc74d0bd git Not specified
CNA Linux Linux affected 3.13 Not specified
CNA Linux Linux unaffected 3.13 semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.97 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/cfc67aee0c83e7f5d43a1dad3e25c789e9cc1d92 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/dae9cadf0925f1cbfb71306d60490890df3870a6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/18813b90032bfaafb225906a4d2b51be4dfc02c3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/88a240d86d3d64521f9194abe185ac71cc74d0bd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1b5d8a248c3afa640bcc99fa95abcd1e36f3ee18 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/15545ee71301e82d26d9a31b407ed0019eb62a60 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report