wifi: wcn36xx: fix heap overflow from oversized firmware HAL response
Priority LOW 39Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.00532 45th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.10.273, 5.15.224, 6.1.178 +5
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.273, 5.15.224, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-74341
- 2026-10-03 Alias added: GHSA-8q74-796q-49pm
- 2026-10-30 Fix available: Linux/[email protected], Linux/[email protected], Linux/Linux@7acc1995bdcfdd82b2dd0dc735b1a4b076ae88a0 +1 · CNA
- 2026-10-30 2 new references · CNA
References
Other 8
- https://git.kernel.org/stable/c/7acc1995bdcfdd82b2dd0dc735b1a4b076ae88a0
- https://git.kernel.org/stable/c/b80c4b5268c297b0503f65ef18038327e2119ad1
- https://git.kernel.org/stable/c/dae9cadf0925f1cbfb71306d60490890df3870a6
- https://git.kernel.org/stable/c/cfc67aee0c83e7f5d43a1dad3e25c789e9cc1d92
- https://git.kernel.org/stable/c/15545ee71301e82d26d9a31b407ed0019eb62a60
- https://git.kernel.org/stable/c/1b5d8a248c3afa640bcc99fa95abcd1e36f3ee18
- https://git.kernel.org/stable/c/18813b90032bfaafb225906a4d2b51be4dfc02c3
- https://git.kernel.org/stable/c/88a240d86d3d64521f9194abe185ac71cc74d0bd
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Sources
- CVE-2026-74341 · CVE Program
- CVE-2026-74341 · NVD
- FIRST EPSS
- GHSA-8q74-796q-49pm · GitHub Advisory Database · CC BY 4.0
- CVE-2026-74341 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences