| 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-2023-52916: media: aspeed: Fix memory overwrite if timing is 1600x900 |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: aspeed: Fix memory overwrite if timing is 1600x900 |
| |
| When capturing 1600x900, system could crash when system memory usage is |
| tight. |
| |
| The way to reproduce this issue: |
| 1. Use 1600x900 to display on host |
| 2. Mount ISO through 'Virtual media' on OpenBMC's web |
| 3. Run script as below on host to do sha continuously |
| #!/bin/bash |
| while [ [1] ]; |
| do |
| find /media -type f -printf '"%h/%f"\n' | xargs sha256sum |
| done |
| 4. Open KVM on OpenBMC's web |
| |
| The size of macro block captured is 8x8. Therefore, we should make sure |
| the height of src-buf is 8 aligned to fix this issue. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52916 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.0 with commit d2b4387f3bdf016e266d23cf657465f557721488 and fixed in 6.1.120 with commit 4c823e4027dd1d6e88c31028dec13dd19bc7b02d |
| Issue introduced in 5.0 with commit d2b4387f3bdf016e266d23cf657465f557721488 and fixed in 6.6 with commit c281355068bc258fd619c5aefd978595bede7bfe |
| |
| 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-2023-52916 |
| 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/platform/aspeed/aspeed-video.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/4c823e4027dd1d6e88c31028dec13dd19bc7b02d |
| https://git.kernel.org/stable/c/c281355068bc258fd619c5aefd978595bede7bfe |
