| 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-2024-49923: drm/amd/display: Pass non-null to dcn20_validate_apply_pipe_split_flags |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: Pass non-null to dcn20_validate_apply_pipe_split_flags |
| |
| [WHAT & HOW] |
| "dcn20_validate_apply_pipe_split_flags" dereferences merge, and thus it |
| cannot be a null pointer. Let's pass a valid pointer to avoid null |
| dereference. |
| |
| This fixes 2 FORWARD_NULL issues reported by Coverity. |
| |
| The Linux kernel CVE team has assigned CVE-2024-49923 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 6.6.79 with commit 39a580cd15397e102aaec25986ae5acf492f8930 |
| Fixed in 6.10.14 with commit 85aa996ecfaa95d1e922867390502d23ce21b905 |
| Fixed in 6.11.3 with commit 9a05270869f40c89f8d184fe2d37cb86e0d7e5f5 |
| Fixed in 6.12 with commit 5559598742fb4538e4c51c48ef70563c49c2af23 |
| |
| 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-2024-49923 |
| 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/amd/display/dc/resource/dcn20/dcn20_resource.c |
| drivers/gpu/drm/amd/display/dc/resource/dcn21/dcn21_resource.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/39a580cd15397e102aaec25986ae5acf492f8930 |
| https://git.kernel.org/stable/c/85aa996ecfaa95d1e922867390502d23ce21b905 |
| https://git.kernel.org/stable/c/9a05270869f40c89f8d184fe2d37cb86e0d7e5f5 |
| https://git.kernel.org/stable/c/5559598742fb4538e4c51c48ef70563c49c2af23 |
