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CVE-2026-93791— wifi: iwlwifi: mvm: add a check on the tid coming from the firmware

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: iwlwifi: mvm: 增加对来自固件的 TID 值的检查 ba_notif->tid 是一个由固件控制的 u8 类型变量，此前被直接用作 tid_data[] 数组的索引，未进行任何有效性验证。现在在解引用该数组之前，增加了对 IWL_MAX_TID_COUNT 的边界检查。

AI Predicted 6.6 Difficulty: Moderate EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux c46e7724bfe9bbff17bc468903a757248b99e4ed< 0f690fd3b5535d110898b99ae6214f29c9060941 affected
c46e7724bfe9bbff17bc468903a757248b99e4ed< 0b5325a0771674f1d65618de7db3df9d49186a12 affected
c46e7724bfe9bbff17bc468903a757248b99e4ed< 59f64c2839022f41a7867b38f9e38c185ff39283 affected
c46e7724bfe9bbff17bc468903a757248b99e4ed< 0e4c0d83267261cf67ec9690856edf4a56bb7dfc affected
4.9 affected
< 4.9 unaffected
6.6.158≤ 6.6.* unaffected
6.12.111≤ 6.12.* unaffected
… +2 more rows
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I. Basic Information for CVE-2026-93791

Vulnerability Information
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Vulnerability Title
wifi: iwlwifi: mvm: add a check on the tid coming from the firmware
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: add a check on the tid coming from the firmware ba_notif->tid is a firmware-controlled u8 that is used directly as an array index into tid_data[] without any validation. Add a bounds check against IWL_MAX_TID_COUNT before dereferencing the array.
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 c46e7724bfe9bbff17bc468903a757248b99e4ed ~ 0f690fd3b5535d110898b99ae6214f29c9060941 -
Linux Linux 4.9 -

II. Public POCs for CVE-2026-93791

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III. Intelligence Information for CVE-2026-93791

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Patches & Fixes for CVE-2026-93791 (4)

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-2026-97442 8.8 HIGH wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi
CVE-2026-93806 8.8 HIGH wifi: cfg80211: validate assoc response length before status and IE access
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-2026-93224 8.1 HIGH svcrdma: Fix unmatched rn_unregister on failed accept
CVE-2026-93787 8.1 HIGH smb: client: bound dirent name against end of SMB response in cifs_filldir

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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