| 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-2024-50201: drm/radeon: Fix encoder->possible_clones |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/radeon: Fix encoder->possible_clones |
| |
| Include the encoder itself in its possible_clones bitmask. |
| In the past nothing validated that drivers were populating |
| possible_clones correctly, but that changed in commit |
| 74d2aacbe840 ("drm: Validate encoder->possible_clones"). |
| Looks like radeon never got the memo and is still not |
| following the rules 100% correctly. |
| |
| This results in some warnings during driver initialization: |
| Bogus possible_clones: [ENCODER:46:TV-46] possible_clones=0x4 (full encoder mask=0x7) |
| WARNING: CPU: 0 PID: 170 at drivers/gpu/drm/drm_mode_config.c:615 drm_mode_config_validate+0x113/0x39c |
| ... |
| |
| (cherry picked from commit 3b6e7d40649c0d75572039aff9d0911864c689db) |
| |
| The Linux kernel CVE team has assigned CVE-2024-50201 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.8 with commit 74d2aacbe84042d89f572a3112a146fca05bfcb1 and fixed in 5.10.228 with commit df75c78bfeff99f9b4815c3e79e2b1b1e34fe264 |
| Issue introduced in 5.8 with commit 74d2aacbe84042d89f572a3112a146fca05bfcb1 and fixed in 5.15.169 with commit fda5dc80121b12871dc343ab37e0c3f0d138825d |
| Issue introduced in 5.8 with commit 74d2aacbe84042d89f572a3112a146fca05bfcb1 and fixed in 6.1.114 with commit c3cd27d85f0778f4ec07384d7516b33153759b8e |
| Issue introduced in 5.8 with commit 74d2aacbe84042d89f572a3112a146fca05bfcb1 and fixed in 6.6.58 with commit 1a235af0216411a32ab4db54f7bd19020b46c86d |
| Issue introduced in 5.8 with commit 74d2aacbe84042d89f572a3112a146fca05bfcb1 and fixed in 6.11.5 with commit 68801730ebb9393460b30cd3885e407f15da27a9 |
| Issue introduced in 5.8 with commit 74d2aacbe84042d89f572a3112a146fca05bfcb1 and fixed in 6.12 with commit 28127dba64d8ae1a0b737b973d6d029908599611 |
| |
| 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-2024-50201 |
| 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/radeon/radeon_encoders.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/df75c78bfeff99f9b4815c3e79e2b1b1e34fe264 |
| https://git.kernel.org/stable/c/fda5dc80121b12871dc343ab37e0c3f0d138825d |
| https://git.kernel.org/stable/c/c3cd27d85f0778f4ec07384d7516b33153759b8e |
| https://git.kernel.org/stable/c/1a235af0216411a32ab4db54f7bd19020b46c86d |
| https://git.kernel.org/stable/c/68801730ebb9393460b30cd3885e407f15da27a9 |
| https://git.kernel.org/stable/c/28127dba64d8ae1a0b737b973d6d029908599611 |
