| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-26648: drm/amd/display: Fix variable deferencing before NULL check in edp_setup_replay() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: Fix variable deferencing before NULL check in edp_setup_replay() |
| |
| In edp_setup_replay(), 'struct dc *dc' & 'struct dmub_replay *replay' |
| was dereferenced before the pointer 'link' & 'replay' NULL check. |
| |
| Fixes the below: |
| drivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_edp_panel_control.c:947 edp_setup_replay() warn: variable dereferenced before check 'link' (see line 933) |
| |
| The Linux kernel CVE team has assigned CVE-2024-26648 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.6 with commit c7ddc0a800bc9f681a18c3bdd9f06b61adfabc11 and fixed in 6.6.15 with commit 22ae604aea14756954e1c00ae653e34d2afd2935 |
| Issue introduced in 6.6 with commit c7ddc0a800bc9f681a18c3bdd9f06b61adfabc11 and fixed in 6.7.3 with commit c02d257c654191ecda1dc1af6875d527e85310e7 |
| Issue introduced in 6.6 with commit c7ddc0a800bc9f681a18c3bdd9f06b61adfabc11 and fixed in 6.8 with commit 7073934f5d73f8b53308963cee36f0d389ea857c |
| |
| 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-2024-26648 |
| 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/link/protocols/link_edp_panel_control.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/22ae604aea14756954e1c00ae653e34d2afd2935 |
| https://git.kernel.org/stable/c/c02d257c654191ecda1dc1af6875d527e85310e7 |
| https://git.kernel.org/stable/c/7073934f5d73f8b53308963cee36f0d389ea857c |
