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CVE-2026-93281— wifi: rtw89: fix HE extended capability length check

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.

在 Linux 内核中，已修复以下漏洞： wifi: rtw89：修复 HE 扩展能力长度检查 函数 会读取扩展能力字节 10，但仅拒绝长度小于 10 的 值。而访问字节 10 至少需要 11 个字节。 因此在读取 之前，需确保 。

AI Predicted 5.3 Difficulty: Theoretical EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 8d540f9d29162e273797bef36686a010724f0f8a< eddf53f1edb0cf7f302bd15cdb47cca90948c205 affected
8d540f9d29162e273797bef36686a010724f0f8a< 655c4401c18d735dbaf2cc172ff4f626b3a896a0 affected
8d540f9d29162e273797bef36686a010724f0f8a< bddbd1de765bf6ddc0473ad683910eb3a2a92a43 affected
8d540f9d29162e273797bef36686a010724f0f8a< f2a01deff7d0d5cc3dcbf2358dac113979303c8e affected
8d540f9d29162e273797bef36686a010724f0f8a< f132fc01b359a0f7d81fe13d769ea4e7c4baa66e affected
8d540f9d29162e273797bef36686a010724f0f8a< 2aba608a86e9b099c9af2ea70b620552dee2b628 affected
6.1 affected
< 6.1 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-93281

Vulnerability Information
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Vulnerability Title
wifi: rtw89: fix HE extended capability length check
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: fix HE extended capability length check rtw89_mac_check_he_obss_narrow_bw_ru_iter() reads extended capability byte 10, but rejects only datalen values below 10. Byte 10 requires at least 11 bytes. Require datalen >= 11 before reading data[10].
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8d540f9d29162e273797bef36686a010724f0f8a ~ eddf53f1edb0cf7f302bd15cdb47cca90948c205 -
Linux Linux 6.1 -

II. Public POCs for CVE-2026-93281

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III. Intelligence Information for CVE-2026-93281

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Patches & Fixes for CVE-2026-93281 (6)

Same Patch Batch · Linux · 2026-09-24 · 234 CVEs total

CVE-2026-93207 9.8 CRITICAL SUNRPC: Zero rpc_gss_wire_cred at svcauth_gss_decode_credbody() entry
CVE-2026-97413 9.8 CRITICAL RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
CVE-2026-93228 9.1 CRITICAL svcrdma: Reject Write/Reply chunks with segcount 0
CVE-2026-93793 8.8 HIGH wifi: iwlwifi: mvm: validate TX_CMD response layout
CVE-2026-93799 8.8 HIGH wifi: iwlwifi: mvm: validate sta_id in BA window status notif
CVE-2026-93790 8.8 HIGH wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif
CVE-2026-93806 8.8 HIGH wifi: cfg80211: validate assoc response length before status and IE access
CVE-2026-97442 8.8 HIGH wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi
CVE-2026-97509 8.8 HIGH thunderbolt: Keep XDomain reference during the lifetime of a service
CVE-2026-97409 8.8 HIGH nvme-fc: Do not cancel requests in io target before it is initialized
CVE-2026-93280 8.8 HIGH greybus: audio: bound the topology section sizes against the fetched size
CVE-2026-93284 8.8 HIGH drm/pagemap: dma-unmap pages before handling migration errors
CVE-2026-97451 8.4 HIGH ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)
CVE-2026-97452 8.4 HIGH ACPICA: Prevent adding invalid references
CVE-2026-97455 8.4 HIGH ACPICA: Fix use-after-free in acpi_ds_terminate_control_method()
CVE-2026-97450 8.4 HIGH ACPICA: validate handler object type in two places
CVE-2026-93827 8.4 HIGH virtio-fs: avoid double-free on failed queue setup
CVE-2026-97433 8.2 HIGH nvme: validate FDP configuration descriptor sizes
CVE-2026-93221 8.1 HIGH nfsd: convert nfsd_net boolean flags to unsigned long flags word
CVE-2026-93786 8.1 HIGH ksmbd: preserve VFS inherited POSIX ACL mask

Showing top 20 of 234 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93281

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