CVE-2026-80943: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: wifi: rtlwifi: rtl8192du: check QoS TID before indexing tids rtl92du_tx_fill_desc() uses ieee80211_get_tid() to read the QoS TID from the 802.11 header and then uses it as an index into sta_entry->tids[]. ieee80211_get_tid() returns the low 4-bit QoS TID value, so the result can be in the range 0..15. rtlwifi only allocates MAX_TID_COUNT entries for sta_entry->tids[], and MAX_TID_COUNT is 9. A QoS TID greater than 8 therefore indexes past the aggregation state array. Keep the default RTL_AGG_STOP state for out-of-range TIDs, matching rtl92cu_tx_fill_desc(). This issue was detected by our static analysis tool and confirmed by manual audit. UBSAN validation for the same bug pattern reports an array-index-out-of-bounds access with index 10 for type 'rtl_tid_data [9]'.

Засегнати продукти

• Linux Linux: 8321424134a400a5e3eb39f9acca6bc6946ff447 преди 6e327f14e1c43e175bf530f9165b2cadff308553; 8321424134a400a5e3eb39f9acca6bc6946ff447 преди 0c0b374e12d52af23ca741728db31091677cf9dc; 8321424134a400a5e3eb39f9acca6bc6946ff447 преди 42785f7e8d31540e6172bbcf08a7cc3cae1086f8; 8321424134a400a5e3eb39f9acca6bc6946ff447 преди ed4f05d9f2f42fd866f55108db8123eefcc5fb33
• Linux Linux: 6.11; преди 6.11; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-80943
• https://nvd.nist.gov/vuln/detail/CVE-2026-80943
• https://git.kernel.org/stable/c/6e327f14e1c43e175bf530f9165b2cadff308553
• https://git.kernel.org/stable/c/0c0b374e12d52af23ca741728db31091677cf9dc
• https://git.kernel.org/stable/c/42785f7e8d31540e6172bbcf08a7cc3cae1086f8
• https://git.kernel.org/stable/c/ed4f05d9f2f42fd866f55108db8123eefcc5fb33