| 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-2024-27408: dmaengine: dw-edma: eDMA: Add sync read before starting the DMA transfer in remote setup |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| dmaengine: dw-edma: eDMA: Add sync read before starting the DMA transfer in remote setup |
| |
| The Linked list element and pointer are not stored in the same memory as |
| the eDMA controller register. If the doorbell register is toggled before |
| the full write of the linked list a race condition error will occur. |
| In remote setup we can only use a readl to the memory to assure the full |
| write has occurred. |
| |
| The Linux kernel CVE team has assigned CVE-2024-27408 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.3 with commit 7e4b8a4fbe2cecab0959e862604803d063f50029 and fixed in 6.6.21 with commit d24fe6d5a1cfdddb7a9ef56736ec501c4d0a5fd3 |
| Issue introduced in 5.3 with commit 7e4b8a4fbe2cecab0959e862604803d063f50029 and fixed in 6.7.9 with commit f396b4df27cfe01a99f4b41f584c49e56477be3a |
| Issue introduced in 5.3 with commit 7e4b8a4fbe2cecab0959e862604803d063f50029 and fixed in 6.8 with commit bbcc1c83f343e580c3aa1f2a8593343bf7b55bba |
| |
| 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-2024-27408 |
| 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/dw-edma/dw-edma-v0-core.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/d24fe6d5a1cfdddb7a9ef56736ec501c4d0a5fd3 |
| https://git.kernel.org/stable/c/f396b4df27cfe01a99f4b41f584c49e56477be3a |
| https://git.kernel.org/stable/c/bbcc1c83f343e580c3aa1f2a8593343bf7b55bba |
