| 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-2023-53013: ptdma: pt_core_execute_cmd() should use spinlock |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ptdma: pt_core_execute_cmd() should use spinlock |
| |
| The interrupt handler (pt_core_irq_handler()) of the ptdma |
| driver can be called from interrupt context. The code flow |
| in this function can lead down to pt_core_execute_cmd() which |
| will attempt to grab a mutex, which is not appropriate in |
| interrupt context and ultimately leads to a kernel panic. |
| The fix here changes this mutex to a spinlock, which has |
| been verified to resolve the issue. |
| |
| The Linux kernel CVE team has assigned CVE-2023-53013 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit fa5d823b16a9442d609617abeec31da8b6afa224 and fixed in 5.15.91 with commit ed0d8f731e0bf1bb12a7a37698ac613db20e2794 |
| Issue introduced in 5.15 with commit fa5d823b16a9442d609617abeec31da8b6afa224 and fixed in 6.1.9 with commit 13ba563c2c8055ba8a637c9f70bb833b43cb4207 |
| Issue introduced in 5.15 with commit fa5d823b16a9442d609617abeec31da8b6afa224 and fixed in 6.2 with commit 95e5fda3b5f9ed8239b145da3fa01e641cf5d53c |
| |
| 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-2023-53013 |
| 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/dma/ptdma/ptdma-dev.c |
| drivers/dma/ptdma/ptdma.h |
| |
| |
| 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/ed0d8f731e0bf1bb12a7a37698ac613db20e2794 |
| https://git.kernel.org/stable/c/13ba563c2c8055ba8a637c9f70bb833b43cb4207 |
| https://git.kernel.org/stable/c/95e5fda3b5f9ed8239b145da3fa01e641cf5d53c |
