CVE-2026-93271— ath11k无线驱动接收MCS越界处理漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
在 Linux 内核中，已修复以下漏洞： wifi: ath11k：将超出范围的接收 MCS 值限制在有效范围内，而非保留错误的速率信息 ath11k 驱动程序可以接收到 HT/VHT/HE 帧，这些帧报告的 MCS（调制编码策略）值高于 mac80211 速率空间所能表示的最大值（例如，HE 帧报告 MCS 12，但 HE 格式最大仅支持 MCS 11）。 此类帧本身是有效的，并能正确解码。然而，在这种情况下， 函数会将 设置为超出范围的值，并且从未赋值 ，导致其保持为 初始化时的默认值 。当该帧传递至 mac8
可能的 ATT&CK 技术 1 AI
T1562影响版本矩阵 18
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | d5c65159f2895379e11ca13f62feabe93278985d< 6ad04c3e2ec54bf5ec72c81afdd66318a116c539 |
affected |
d5c65159f2895379e11ca13f62feabe93278985d< a6b951f79e66fc8bd93a537ff1040fbfb567c8bf |
affected | ||
d5c65159f2895379e11ca13f62feabe93278985d< b77bfe6e59b98dff3ccfcf9b45fc27e3db498626 |
affected | ||
d5c65159f2895379e11ca13f62feabe93278985d< fb7b9a7209f839c17c66484dfdc84c9a23c6fd2f |
affected | ||
d5c65159f2895379e11ca13f62feabe93278985d< a0b3e6f9645d88f387c4fea546048a91952cd4cd |
affected | ||
d5c65159f2895379e11ca13f62feabe93278985d< 2bb2a778a487305bd378db5fd5014fbdce4ada2c |
affected | ||
d5c65159f2895379e11ca13f62feabe93278985d< ccbd20f2168f581d90265da1a925b9b6472a0b05 |
affected | ||
d5c65159f2895379e11ca13f62feabe93278985d< 12b09e478aa7459b7893a695ef77682202f2da83 |
affected | ||
| … +10 条更多 | |||
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一、 漏洞 CVE-2026-93271 基础信息
漏洞信息
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Vulnerability Title
wifi: ath11k: cap out-of-range rx MCS instead of leaving bogus rate
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath11k: cap out-of-range rx MCS instead of leaving bogus rate
ath11k can receive HT/VHT/HE frames whose reported MCS is above the
maximum that can be expressed in the corresponding mac80211 rate space
(e.g. an HE frame reported with MCS 12, while HE tops out at MCS 11).
The frame itself is valid and decodes correctly, but for such a frame
ath11k_dp_rx_h_rate() leaves rx_status->rate_idx set to the out-of-range
value and never assigns rx_status->encoding, so it stays RX_ENC_LEGACY
from the ath11k_dp_rx_h_ppdu() initialization. Once that frame reaches
mac80211 it trips the rate sanity check and the frame is dropped with a
splat:
ath11k_pci 0000:03:00.0: Received with invalid mcs in HE mode 12
WARNING: CPU: 0 PID: 0 at net/mac80211/rx.c:5433 ieee80211_rx_list+0xb0a/0xe90 [mac80211]
Dropping the frame would discard otherwise valid data, so instead cap the
reported MCS to the maximum the rate space can express and deliver the
frame. Set rx_status->encoding before the range check and assign rate_idx
from the capped value, so a frame with an out-of-range MCS no longer
leaves partial or bogus rate metadata behind. Also downgrade the logging
level since they are not treated as invalid frames now. The only loss is
that such a frame is reported as the capped MCS in the rx rate statistics.
Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.41
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-93271 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-93271 补丁与修复 (8)
同批安全公告 · Linux · 2026-09-24 · 共 234 条
| CVE-2026-93207 | 9.8 CRITICAL | SUNRPC svcauth_gss_decode_credbody() 存在安全漏洞 |
| CVE-2026-97413 | 9.8 CRITICAL | Linux RDMA/rtrs-srv整数下溢漏洞 |
| CVE-2026-93228 | 9.1 CRITICAL | svcrdma 拒绝段计数为0的写入/回复块漏洞 |
| CVE-2026-93793 | 8.8 HIGH | iwlwifi 驱动 TX_CMD 响应布局验证漏洞 |
| CVE-2026-93799 | 8.8 HIGH | iwlwifi mvm BA窗口状态通知中sta_id验证漏洞 |
| CVE-2026-93790 | 8.8 HIGH | iwlwifi 驱动 BA 通知中 tid_data 越界访问漏洞 |
| CVE-2026-93806 | 8.8 HIGH | wifi: cfg80211 关联响应长度验证漏洞 |
| CVE-2026-97442 | 8.8 HIGH | ath11k无线驱动rx_h_undecap_nwifi无效数据访问漏洞 |
| CVE-2026-97509 | 8.8 HIGH | Thunderbolt 服务期间保持 XDomain 引用漏洞 |
| CVE-2026-97409 | 8.8 HIGH | Linux NVMe-oF目标未初始化前取消请求漏洞 |
| CVE-2026-93280 | 8.8 HIGH | Greybus 音频拓扑边界检查漏洞 |
| CVE-2026-93284 | 8.8 HIGH | drm/pagemap 迁移错误前未解除 dma 映射 |
| CVE-2026-97451 | 8.4 HIGH | ACPICA mid_op 整数溢出漏洞 |
| CVE-2026-97452 | 8.4 HIGH | ACPICA：防止添加无效引用 |
| CVE-2026-97455 | 8.4 HIGH | ACPICA acpi_ds_terminate_control_method 使用后释放漏洞 |
| CVE-2026-97450 | 8.4 HIGH | ACPICA 双重验证处理器对象类型漏洞 |
| CVE-2026-93827 | 8.4 HIGH | virtio-fs 队列设置失败时双重释放漏洞 |
| CVE-2026-97433 | 8.2 HIGH | NVMe 验证 FDP 配置描述符大小 |
| CVE-2026-93221 | 8.1 HIGH | NFS服务端标志位转换为无符号长整型 |
| CVE-2026-93786 | 8.1 HIGH | ksmbd 保持 VFS 继承 POSIX ACL 掩码漏洞 |
显示前 20 条，共 234 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-93271
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