| 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-2023-52776: wifi: ath12k: fix dfs-radar and temperature event locking |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| wifi: ath12k: fix dfs-radar and temperature event locking |
| |
| The ath12k active pdevs are protected by RCU but the DFS-radar and |
| temperature event handling code calling ath12k_mac_get_ar_by_pdev_id() |
| was not marked as a read-side critical section. |
| |
| Mark the code in question as RCU read-side critical sections to avoid |
| any potential use-after-free issues. |
| |
| Note that the temperature event handler looks like a place holder |
| currently but would still trigger an RCU lockdep splat. |
| |
| Compile tested only. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52776 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.5.13 with commit 774de37c147fea81f2c2e4be5082304f4f71d535 |
| Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.6.3 with commit d7a5f7f76568e48869916d769e28b9f3ca70c78e |
| Issue introduced in 6.3 with commit d889913205cf7ebda905b1e62c5867ed4e39f6c2 and fixed in 6.7 with commit 69bd216e049349886405b1c87a55dce3d35d1ba7 |
| |
| 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-2023-52776 |
| 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/wmi.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/774de37c147fea81f2c2e4be5082304f4f71d535 |
| https://git.kernel.org/stable/c/d7a5f7f76568e48869916d769e28b9f3ca70c78e |
| https://git.kernel.org/stable/c/69bd216e049349886405b1c87a55dce3d35d1ba7 |
