Bug 2367748 (CVE-2025-37943)

Summary: CVE-2025-37943 kernel: wifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was discovered in the Linux kernel's driver for Qualcomm Atheros Wi-fi 7 driver (ath12k). An attacker with the ability to generate real or simulated network traffic could exploit this vulnerability to modify kernel memory, leading to a denial of service, compromised system integrity, or an elevation of privileges.
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Description OSIDB Bzimport 2025-05-21 09:01:19 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: ath12k: Fix invalid data access in ath12k_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 ath12k_dp_rx_h_undecap_nwifi function for
DP_RX_DECAP_TYPE_NATIVE_WIFI decap type and
potentially resulting in invalid data access and memory corruption.

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.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Comment 1 Avinash Hanwate 2025-05-21 09:58:30 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025052043-CVE-2025-37943-9cf8@gregkh/T
Comment 3 errata-xmlrpc 2025-06-09 07:19:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:8643 https://access.redhat.com/errata/RHSA-2025:8643
Comment 4 errata-xmlrpc 2025-06-09 12:55:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:8669 https://access.redhat.com/errata/RHSA-2025:8669