CVE-2025-71100: RTL8192CU TID OOR Array Index in Linux Kernel
CVE-2025-71100 Published on January 13, 2026
wifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc()
In the Linux kernel, the following vulnerability has been resolved:
wifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc()
TID getting from ieee80211_get_tid() might be out of range of array size
of sta_entry->tids[], so check TID is less than MAX_TID_COUNT. Othwerwise,
UBSAN warn:
UBSAN: array-index-out-of-bounds in drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c:514:30
index 10 is out of range for type 'rtl_tid_data [9]'
Products Associated with CVE-2025-71100
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Affected Versions
Linux:- Version 8ca4cdef93297c9b9bf08da39bc940bd20acbb94 and below 9765d6eb8298b07d499cdf9ef7c237d3540102d6 is affected.
- Version 8ca4cdef93297c9b9bf08da39bc940bd20acbb94 and below 90a15ff324645aa806d81fa349497cd964861b66 is affected.
- Version 8ca4cdef93297c9b9bf08da39bc940bd20acbb94 and below dd39edb445f07400e748da967a07d5dca5c5f96e is affected.
- Version 6.9 is affected.
- Before 6.9 is unaffected.
- Version 6.12.64, <= 6.12.* is unaffected.
- Version 6.18.4, <= 6.18.* is unaffected.
- Version 6.19, <= * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.