CVE-2026-80943 Linux Kernel rtlwifi - Out-of-Bounds Read/Write

Linux kernel wifi rtlwifi rtl8192du contains an out-of-bounds array indexing vulnerability caused by unchecked QoS TID indexing in rtl92du_tx_fill_desc(), letting attackers potentially cause memory corruption or denial of service, exploit requires crafted network packets.

CVSS base score 7.6 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.24% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out-of-Bounds Read/Write
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs