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CVE-2026-93790— wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif

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: 修复 BA 通知中越界访问 tid_data 的问题 的索引错误地使用了 TFD 循环计数器 ，而非实际的 TID 值 。这会导致将 写入一个与 BA（Block Ack）条目无关的随机 槽位。 由于目前并未真正使用多 TID 块确认（multi-TID blockack），因此 始终为 0，未造成实际危害。 现已在访问该数组前添加了越界检查。

CVSS 8.8 · High EPSS 0.24% · P13

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 41fd2fec56db2564f02532ed7244e1f69193b4ad< c48b741277b01b2c3b4ecccedc72fc575b71dc04 affected
41fd2fec56db2564f02532ed7244e1f69193b4ad< e8ac5e91b1296f65c3d119fac3fa917ff458f811 affected
41fd2fec56db2564f02532ed7244e1f69193b4ad< 94d3982806c7f194b23484befde12934dda23064 affected
4.15 affected
< 4.15 unaffected
6.12.111≤ 6.12.* unaffected
6.18.53≤ 6.18.* unaffected
7.2≤ * unaffected
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I. Basic Information for CVE-2026-93790

Vulnerability Information
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Vulnerability Title
wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif mvmsta->tid_data was indexed by the TFD loop counter 'i' instead of the actual TID value 'tid'. This writes lq_color into a random tid_data slot unrelated to the BA entry. Since multi-TID blockack is not really in use, 'i' was always 0 and no harm was done. Add a out-of-bound check before accessing the array.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 41fd2fec56db2564f02532ed7244e1f69193b4ad ~ c48b741277b01b2c3b4ecccedc72fc575b71dc04 -
Linux Linux 4.15 -

II. Public POCs for CVE-2026-93790

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III. Intelligence Information for CVE-2026-93790

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Patches & Fixes for CVE-2026-93790 (3)

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-2026-93806 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-2026-97409 8.8 HIGH nvme-fc: Do not cancel requests in io target before it is initialized
CVE-2026-97509 8.8 HIGH thunderbolt: Keep XDomain reference during the lifetime of a service
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-2026-97455 8.4 HIGH ACPICA: Fix use-after-free in acpi_ds_terminate_control_method()
CVE-2026-97452 8.4 HIGH ACPICA: Prevent adding invalid references
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-2026-93786 8.1 HIGH ksmbd: preserve VFS inherited POSIX ACL mask
CVE-2026-93221 8.1 HIGH nfsd: convert nfsd_net boolean flags to unsigned long flags word
CVE-2026-93224 8.1 HIGH svcrdma: Fix unmatched rn_unregister on failed accept

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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