| 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-2021-47431: drm/amdgpu: fix gart.bo pin_count leak |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amdgpu: fix gart.bo pin_count leak |
| |
| gmc_v{9,10}_0_gart_disable() isn't called matched with |
| correspoding gart_enbale function in SRIOV case. This will |
| lead to gart.bo pin_count leak on driver unload. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47431 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.4.154 with commit 83d857d6b0967b6709cd38750c3ce2ed8ced1a95 |
| Fixed in 5.10.74 with commit 621ddffb70db824eabd63d18ac635180fe9500f9 |
| Fixed in 5.14.13 with commit 18d1c5ea3798ba42cfa0f8b2264d873463facb03 |
| Fixed in 5.15 with commit 66805763a97f8f7bdf742fc0851d85c02ed9411f |
| |
| 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-2021-47431 |
| 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/amdgpu/gmc_v10_0.c |
| drivers/gpu/drm/amd/amdgpu/gmc_v9_0.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/83d857d6b0967b6709cd38750c3ce2ed8ced1a95 |
| https://git.kernel.org/stable/c/621ddffb70db824eabd63d18ac635180fe9500f9 |
| https://git.kernel.org/stable/c/18d1c5ea3798ba42cfa0f8b2264d873463facb03 |
| https://git.kernel.org/stable/c/66805763a97f8f7bdf742fc0851d85c02ed9411f |
