Bug 2367603 (CVE-2025-37976)

Summary:	CVE-2025-37976 kernel: wifi: ath12k: Fix invalid entry fetch in ath12k_dp_mon_srng_process
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	unspecified	CC:	dfreiber, drow, jburrell, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	This CVE has been marked as Rejected by the assigning CNA.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-05-20 18:01:22 UTC

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath12k: Fix invalid entry fetch in ath12k_dp_mon_srng_process

[ Upstream commit 63fdc4509bcf483e79548de6bc08bf3c8e504bb3 ]

Currently, ath12k_dp_mon_srng_process uses ath12k_hal_srng_src_get_next_entry
to fetch the next entry from the destination ring. This is incorrect because
ath12k_hal_srng_src_get_next_entry is intended for source rings, not destination
rings. This leads to invalid entry fetches, causing potential data corruption or
crashes due to accessing incorrect memory locations. This happens because the
source ring and destination ring have different handling mechanisms and using
the wrong function results in incorrect pointer arithmetic and ring management.

To fix this issue, replace the call to ath12k_hal_srng_src_get_next_entry with
ath12k_hal_srng_dst_get_next_entry in ath12k_dp_mon_srng_process. This ensures
that the correct function is used for fetching entries from the destination
ring, preventing invalid memory accesses.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Comment 1 Avinash Hanwate 2025-05-21 05:58:20 UTC

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025052039-CVE-2025-37976-7371@gregkh/T

Comment 3 TEJ RATHI 2025-08-20 11:53:40 UTC

This CVE has been rejected by the Linux kernel community. Refer to the announcement: https://lore.kernel.org/linux-cve-announce/2025061801-REJECTED-6bfe@gregkh/

Incorrect use of source-ring fetch function for a destination ring led to invalid pointer access. The patch replaces the call with the correct API to prevent kernel crashes or memory corruption when processing destination ring entries.

Comment added by: Automated Script