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CVE-2025-71100— wifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于rtl92cu_tx_fill_desc函数中未检查TID范围，可能导致数组索引越界。

CVSS 7.6 · High EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 8ca4cdef93297c9b9bf08da39bc940bd20acbb94< 9765d6eb8298b07d499cdf9ef7c237d3540102d6 affected
8ca4cdef93297c9b9bf08da39bc940bd20acbb94< 90a15ff324645aa806d81fa349497cd964861b66 affected
8ca4cdef93297c9b9bf08da39bc940bd20acbb94< dd39edb445f07400e748da967a07d5dca5c5f96e affected
6.9 affected
< 6.9 unaffected
6.12.64≤ 6.12.* unaffected
6.18.4≤ 6.18.* unaffected
6.19≤ * unaffected
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I. Basic Information for CVE-2025-71100

Vulnerability Information
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Vulnerability Title
wifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc()
Source: CVE Program / CVE List V5
Vulnerability Description
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]'
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于rtl92cu_tx_fill_desc函数中未检查TID范围，可能导致数组索引越界。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8ca4cdef93297c9b9bf08da39bc940bd20acbb94 ~ 9765d6eb8298b07d499cdf9ef7c237d3540102d6 -
Linux Linux 6.9 -

II. Public POCs for CVE-2025-71100

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III. Intelligence Information for CVE-2025-71100

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Same Patch Batch · Linux · 2026-01-13 · 93 CVEs total

CVE-2025-68817 9.8 CRITICAL ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency
CVE-2025-71068 9.8 CRITICAL svcrdma: bound check rq_pages index in inline path
CVE-2025-68794 9.8 CRITICAL iomap: adjust read range correctly for non-block-aligned positions
CVE-2025-68811 9.8 CRITICAL svcrdma: use rc_pageoff for memcpy byte offset
CVE-2025-68775 9.8 CRITICAL net/handshake: duplicate handshake cancellations leak socket
CVE-2025-71095 9.1 CRITICAL net: stmmac: fix the crash issue for zero copy XDP_TX action
CVE-2025-71093 9.1 CRITICAL e1000: fix OOB in e1000_tbi_should_accept()
CVE-2025-68809 9.1 CRITICAL ksmbd: vfs: fix race on m_flags in vfs_cache
CVE-2025-68818 8.8 HIGH scsi: Revert "scsi: qla2xxx: Perform lockless command completion in abort path"
CVE-2025-71072 8.2 HIGH shmem: fix recovery on rename failures
CVE-2025-68799 8.1 HIGH caif: fix integer underflow in cffrml_receive()
CVE-2025-68803 8.0 HIGH NFSD: NFSv4 file creation neglects setting ACL
CVE-2025-68800 7.8 HIGH mlxsw: spectrum_mr: Fix use-after-free when updating multicast route stats
CVE-2025-68805 7.8 HIGH fuse: fix io-uring list corruption for terminated non-committed requests
CVE-2025-68792 7.8 HIGH tpm2-sessions: Fix out of range indexing in name_size
CVE-2025-68793 7.8 HIGH drm/amdgpu: fix a job->pasid access race in gpu recovery
CVE-2025-71099 7.8 HIGH drm/xe/oa: Fix potential UAF in xe_oa_add_config_ioctl()
CVE-2025-68815 7.8 HIGH net/sched: ets: Remove drr class from the active list if it changes to strict
CVE-2025-68801 7.8 HIGH mlxsw: spectrum_router: Fix neighbour use-after-free
CVE-2025-68810 7.8 HIGH KVM: Disallow toggling KVM_MEM_GUEST_MEMFD on an existing memslot

Showing top 20 of 93 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-71100

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