| 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-2024-46827: wifi: ath12k: fix firmware crash due to invalid peer nss |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| wifi: ath12k: fix firmware crash due to invalid peer nss |
| |
| Currently, if the access point receives an association |
| request containing an Extended HE Capabilities Information |
| Element with an invalid MCS-NSS, it triggers a firmware |
| crash. |
| |
| This issue arises when EHT-PHY capabilities shows support |
| for a bandwidth and MCS-NSS set for that particular |
| bandwidth is filled by zeros and due to this, driver obtains |
| peer_nss as 0 and sending this value to firmware causes |
| crash. |
| |
| Address this issue by implementing a validation step for |
| the peer_nss value before passing it to the firmware. If |
| the value is greater than zero, proceed with forwarding |
| it to the firmware. However, if the value is invalid, |
| reject the association request to prevent potential |
| firmware crashes. |
| |
| Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 |
| |
| The Linux kernel CVE team has assigned CVE-2024-46827 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.6.51 with commit 838c2cfdb6be7d7d8c06c711edf893eb34ca2e7c |
| Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.10.10 with commit 25a15f80253a7c8776e4e4880d797d20ec864154 |
| Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.11 with commit db163a463bb93cd3e37e1e7b10b9726fb6f95857 |
| |
| 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-2024-46827 |
| 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/mac.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/838c2cfdb6be7d7d8c06c711edf893eb34ca2e7c |
| https://git.kernel.org/stable/c/25a15f80253a7c8776e4e4880d797d20ec864154 |
| https://git.kernel.org/stable/c/db163a463bb93cd3e37e1e7b10b9726fb6f95857 |
