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CVE-2026-97442

wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi

HIGH
8.8
CVSS Score
Published: September 24, 2026 at 04:03 PM UTC
Updated: October 3, 2026 at 11:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.8
Exploit prediction
EPSS 0.3%

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi In certain cases, hardware might provide packets with a length greater than the maximum native Wi-Fi header length. This can lead to accessing and modifying fields in the header within the ath11k_dp_rx_h_undecap_nwifi() function for the DP_RX_DECAP_TYPE_NATIVE_WIFI decap type and potentially result in invalid data access and memory corruption. Kernel stack is corrupted in: ath11k_dp_rx_h_undecap+0x6b0/0x6b0 [ath11k] Call trace: ath11k_dp_rx_h_mpdu+0x0/0x2e8 [ath11k] ath11k_dp_rx_h_mpdu+0x1e0/0x2e8 [ath11k] ath11k_dp_rx_wbm_err+0x1e0/0x450 [ath11k] ath11k_dp_rx_process_wbm_err+0x2fc/0x460 [ath11k] ath11k_dp_service_srng+0x2e0/0x348 [ath11k] Add a sanity check before processing the SKB to prevent invalid data access in the undecap native Wi-Fi function for the DP_RX_DECAP_TYPE_NATIVE_WIFI decap type. This adapted from the discussion/patch of the ath12k driver [1]. Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-04685-QCAHSPSWPL_V1_V2_SILICONZ_IOE-1

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.7 ≤ v < 6.1.1895.7 ≤ v < 6.12.1115.7 ≤ v < 6.18.535.7 ≤ v < 6.6.1585.7 ≤ v < 7.25.7acc79d981c1462b22a7a2cb0d39725f8c01fc425
Vendor states this is fixed in 00738665c875ab34efa7126ea63c9d70b48ee169 (fixed)
Vendor states this is fixed in 1c0a13be76db3c1cf774aa11d9f4c3f8239ac567 (fixed)
Vendor states this is fixed in 6b471e9aefee9ed73278eb1141e0d8530a56fae9 (fixed)
Vendor states this is fixed in 958cf3696ddc5ccafd3d0b8b0c03d90bcd771c0c (fixed)
Vendor states this is fixed in b4ef30f1d107aae460edf731a7c2d187fbc46a32 (fixed)
Vendor states this is fixed in 5.7 (unaffected)
Vendor states this is fixed in 6.1.189 (unaffected)
Vendor states this is fixed in 6.12.111 (unaffected)
Vendor states this is fixed in 6.18.53 (unaffected)
Vendor states this is fixed in 6.6.158 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

Source: cverecord
https://git.kernel.org/stable/c/1c0a13be76db3c1cf774aa11d9f4c3f8239ac567
Source: cverecord
https://git.kernel.org/stable/c/00738665c875ab34efa7126ea63c9d70b48ee169
Source: cverecord
https://git.kernel.org/stable/c/6b471e9aefee9ed73278eb1141e0d8530a56fae9
Source: cverecord
https://git.kernel.org/stable/c/958cf3696ddc5ccafd3d0b8b0c03d90bcd771c0c
Source: cverecord
https://git.kernel.org/stable/c/b4ef30f1d107aae460edf731a7c2d187fbc46a32

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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