PT-2026-2621 · Rtlwifi+4 · Rtlwifi+4
CVE-2025-71100
·
Published
2025-11-27
·
Updated
2026-08-30
CVSS v3.1
7.6
High
| Vector | AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
An issue exists in the Linux kernel related to the rtlwifi driver and the 8192cu component. A flaw in the
rtl92cu tx fill desc() function can lead to a tid (Traffic Identification) value being out of range for the sta entry->tids[] array. This can trigger an out-of-bounds write, resulting in a UBSAN (Undefined Behavior Sanitizer) warning. The issue occurs when the TID obtained from ieee80211 get tid() exceeds the maximum allowed TID count.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Improper Validation of Array Index
Memory Corruption
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Related Identifiers
Affected Products
8192Cu
Linuxmint
Linux Kernel
Ubuntu
Rtlwifi