| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-43881: wifi: ath12k: change DMA direction while mapping reinjected packets |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| wifi: ath12k: change DMA direction while mapping reinjected packets |
| |
| For fragmented packets, ath12k reassembles each fragment as a normal |
| packet and then reinjects it into HW ring. In this case, the DMA |
| direction should be DMA_TO_DEVICE, not DMA_FROM_DEVICE. Otherwise, |
| an invalid payload may be reinjected into the HW and |
| subsequently delivered to the host. |
| |
| Given that arbitrary memory can be allocated to the skb buffer, |
| knowledge about the data contained in the reinjected buffer is lacking. |
| Consequently, there’s a risk of private information being leaked. |
| |
| Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00209-QCAHKSWPL_SILICONZ-1 |
| |
| The Linux kernel CVE team has assigned CVE-2024-43881 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.6.44 with commit e99d9b16ff153de9540073239d24adc3b0a3a997 |
| Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.10.3 with commit 6925320fcd40d8042d32bf4ede8248e7a5315c3b |
| Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.11 with commit 33322e3ef07409278a18c6919c448e369d66a18e |
| |
| 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-2024-43881 |
| 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_rx.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/e99d9b16ff153de9540073239d24adc3b0a3a997 |
| https://git.kernel.org/stable/c/6925320fcd40d8042d32bf4ede8248e7a5315c3b |
| https://git.kernel.org/stable/c/33322e3ef07409278a18c6919c448e369d66a18e |
