| 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-2023-52857: drm/mediatek: Fix coverity issue with unintentional integer overflow |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/mediatek: Fix coverity issue with unintentional integer overflow |
| |
| 1. Instead of multiplying 2 variable of different types. Change to |
| assign a value of one variable and then multiply the other variable. |
| |
| 2. Add a int variable for multiplier calculation instead of calculating |
| different types multiplier with dma_addr_t variable directly. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52857 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.14 with commit 1a64a7aff8da352c9419de3d5c34343682916411 and fixed in 6.1.132 with commit a12bd675100531f9fb4508fd4430dd1632325a0e |
| Issue introduced in 5.14 with commit 1a64a7aff8da352c9419de3d5c34343682916411 and fixed in 6.5.12 with commit 0d8a1df39d3fc34560e2cc663b5c340d06a25396 |
| Issue introduced in 5.14 with commit 1a64a7aff8da352c9419de3d5c34343682916411 and fixed in 6.6.2 with commit 96312a251d4dcee5d36e32edba3002bfde0ddd9c |
| Issue introduced in 5.14 with commit 1a64a7aff8da352c9419de3d5c34343682916411 and fixed in 6.7 with commit b0b0d811eac6b4c52cb9ad632fa6384cf48869e7 |
| Issue introduced in 5.13.12 with commit 73e81f7219aa582d8e55a7b6552f607a8e5a9724 |
| |
| 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-2023-52857 |
| 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/gpu/drm/mediatek/mtk_drm_gem.c |
| drivers/gpu/drm/mediatek/mtk_drm_plane.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/a12bd675100531f9fb4508fd4430dd1632325a0e |
| https://git.kernel.org/stable/c/0d8a1df39d3fc34560e2cc663b5c340d06a25396 |
| https://git.kernel.org/stable/c/96312a251d4dcee5d36e32edba3002bfde0ddd9c |
| https://git.kernel.org/stable/c/b0b0d811eac6b4c52cb9ad632fa6384cf48869e7 |
