| 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-2022-48749: drm/msm/dpu: invalid parameter check in dpu_setup_dspp_pcc |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/msm/dpu: invalid parameter check in dpu_setup_dspp_pcc |
| |
| The function performs a check on the "ctx" input parameter, however, it |
| is used before the check. |
| |
| Initialize the "base" variable after the sanity check to avoid a |
| possible NULL pointer dereference. |
| |
| Addresses-Coverity-ID: 1493866 ("Null pointer dereference") |
| |
| The Linux kernel CVE team has assigned CVE-2022-48749 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.8 with commit 4259ff7ae509ed880b3a7bb685972c3a3bf4b74b and fixed in 5.10.96 with commit 93a6e920d8ccb4df846c03b6e72f7e08843d294c |
| Issue introduced in 5.8 with commit 4259ff7ae509ed880b3a7bb685972c3a3bf4b74b and fixed in 5.15.19 with commit 8f069f6dde518dfebe86e848508c07e497bd9298 |
| Issue introduced in 5.8 with commit 4259ff7ae509ed880b3a7bb685972c3a3bf4b74b and fixed in 5.16.5 with commit 1ebc18836d5df09061657f8c548e594cbb519476 |
| Issue introduced in 5.8 with commit 4259ff7ae509ed880b3a7bb685972c3a3bf4b74b and fixed in 5.17 with commit 170b22234d5495f5e0844246e23f004639ee89ba |
| |
| 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-2022-48749 |
| 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/msm/disp/dpu1/dpu_hw_dspp.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/93a6e920d8ccb4df846c03b6e72f7e08843d294c |
| https://git.kernel.org/stable/c/8f069f6dde518dfebe86e848508c07e497bd9298 |
| https://git.kernel.org/stable/c/1ebc18836d5df09061657f8c548e594cbb519476 |
| https://git.kernel.org/stable/c/170b22234d5495f5e0844246e23f004639ee89ba |
