| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-37976: wifi: ath12k: Fix invalid entry fetch in ath12k_dp_mon_srng_process |
| |
| Description |
| =========== |
| |
| 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 |
| |
| The Linux kernel CVE team has assigned CVE-2025-37976 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.14.3 with commit 0c1015493f0e3979bcbd3a12ebc0977578c87f21 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2025-37976 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/net/wireless/ath/ath12k/dp_mon.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/0c1015493f0e3979bcbd3a12ebc0977578c87f21 |
