| 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-2024-43877: media: pci: ivtv: Add check for DMA map result |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: pci: ivtv: Add check for DMA map result |
| |
| In case DMA fails, 'dma->SG_length' is 0. This value is later used to |
| access 'dma->SGarray[dma->SG_length - 1]', which will cause out of |
| bounds access. |
| |
| Add check to return early on invalid value. Adjust warnings accordingly. |
| |
| Found by Linux Verification Center (linuxtesting.org) with SVACE. |
| |
| The Linux kernel CVE team has assigned CVE-2024-43877 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.16 with commit 1932dc2f4cf6ac23e48e5fcc24d21adbe35691d1 and fixed in 6.1.103 with commit 24062aa7407091dee3e45a8e8037df437e848718 |
| Issue introduced in 5.16 with commit 1932dc2f4cf6ac23e48e5fcc24d21adbe35691d1 and fixed in 6.6.44 with commit 3d8fd92939e21ff0d45100ab208f8124af79402a |
| Issue introduced in 5.16 with commit 1932dc2f4cf6ac23e48e5fcc24d21adbe35691d1 and fixed in 6.10.3 with commit c766065e8272085ea9c436414b7ddf1f12e7787b |
| Issue introduced in 5.16 with commit 1932dc2f4cf6ac23e48e5fcc24d21adbe35691d1 and fixed in 6.11 with commit 629913d6d79508b166c66e07e4857e20233d85a9 |
| |
| 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-2024-43877 |
| 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/media/pci/ivtv/ivtv-udma.c |
| drivers/media/pci/ivtv/ivtv-yuv.c |
| drivers/media/pci/ivtv/ivtvfb.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/24062aa7407091dee3e45a8e8037df437e848718 |
| https://git.kernel.org/stable/c/3d8fd92939e21ff0d45100ab208f8124af79402a |
| https://git.kernel.org/stable/c/c766065e8272085ea9c436414b7ddf1f12e7787b |
| https://git.kernel.org/stable/c/629913d6d79508b166c66e07e4857e20233d85a9 |
