Integer overflow in Linux kernel - CVE-2026-74411
Published: August 15, 2026
Vulnerability identifier: #VU142699
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-74411
CWE-ID: CWE-190
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an integer truncation in rtw89_update_6ghz_rnr_chan when processing 6 GHz scan parameters. A local user can trigger Wi-Fi scanning with a large number of 6 GHz parameters to cause a denial of service.
The issue can result in a kernel soft lockup during 6 GHz Wi-Fi scanning and may lead to a system panic.
Affected software
Linux kernel
Ubuntu
linux-nvidia-tegra (Ubuntu package)
Ubuntu
linux-nvidia-tegra (Ubuntu package)
How to mitigate CVE-2026-74411
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1035.38
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1035.38
External References
- https://git.kernel.org/stable/c/05d46e30303275f21f13c951166d39c85df976d4
- https://git.kernel.org/stable/c/08fdcb529df6df3562dd2b0035f88dd5be8b3c68
- https://git.kernel.org/stable/c/140fa699cfd0e18ab2f1497acd951fb3548610f5
- https://git.kernel.org/stable/c/7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f
- https://git.kernel.org/stable/c/966fbed4b4463fbcb49c5becf3f86eae776861bd