| 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-2023-52921: drm/amdgpu: fix possible UAF in amdgpu_cs_pass1() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amdgpu: fix possible UAF in amdgpu_cs_pass1() |
| |
| Since the gang_size check is outside of chunk parsing |
| loop, we need to reset i before we free the chunk data. |
| |
| Suggested by Ye Zhang (@VAR10CK) of Baidu Security. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52921 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 6.1.46 with commit 9a2393af1f35d1975204fc00035c64a1c792b278 |
| Fixed in 6.4.11 with commit e08e9dd09809b16f8f8cee8c466841b33d24ed96 |
| Fixed in 6.5 with commit 90e065677e0362a777b9db97ea21d43a39211399 |
| |
| 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-2023-52921 |
| 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/amdgpu_cs.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/9a2393af1f35d1975204fc00035c64a1c792b278 |
| https://git.kernel.org/stable/c/e08e9dd09809b16f8f8cee8c466841b33d24ed96 |
| https://git.kernel.org/stable/c/90e065677e0362a777b9db97ea21d43a39211399 |
