| 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-2022-49055: drm/amdkfd: Check for potential null return of kmalloc_array() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amdkfd: Check for potential null return of kmalloc_array() |
| |
| As the kmalloc_array() may return null, the 'event_waiters[i].wait' would lead to null-pointer dereference. |
| Therefore, it is better to check the return value of kmalloc_array() to avoid this confusion. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49055 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.2 with commit f3a398183f7b9ef78f6b71ee9f7641e046403bcb and fixed in 4.9.311 with commit 32cf90a521dcc0f136db7ee5ba32bfe5f79e460e |
| Issue introduced in 4.2 with commit f3a398183f7b9ef78f6b71ee9f7641e046403bcb and fixed in 4.14.276 with commit 40bf32dbfef866c83a3e74800b81d79e52b6d20b |
| Issue introduced in 4.2 with commit f3a398183f7b9ef78f6b71ee9f7641e046403bcb and fixed in 4.19.239 with commit 94869bb0de69a812f70231b0eb480bb2f7ae73a6 |
| Issue introduced in 4.2 with commit f3a398183f7b9ef78f6b71ee9f7641e046403bcb and fixed in 5.4.190 with commit c7a268b33882d5feaafd29c1734456f41ba41396 |
| Issue introduced in 4.2 with commit f3a398183f7b9ef78f6b71ee9f7641e046403bcb and fixed in 5.10.112 with commit 1d7a5aae884ca727d41c7ed15d4c82fdb67c040c |
| Issue introduced in 4.2 with commit f3a398183f7b9ef78f6b71ee9f7641e046403bcb and fixed in 5.15.35 with commit f2658d5966bcee8c3eb487875f459756d4f7cdfc |
| Issue introduced in 4.2 with commit f3a398183f7b9ef78f6b71ee9f7641e046403bcb and fixed in 5.17.4 with commit 0a692c625e373fef692ffbc7fc41f8a025f01cb7 |
| Issue introduced in 4.2 with commit f3a398183f7b9ef78f6b71ee9f7641e046403bcb and fixed in 5.18 with commit ebbb7bb9e80305820dc2328a371c1b35679f2667 |
| |
| 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-2022-49055 |
| 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/amdkfd/kfd_events.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/32cf90a521dcc0f136db7ee5ba32bfe5f79e460e |
| https://git.kernel.org/stable/c/40bf32dbfef866c83a3e74800b81d79e52b6d20b |
| https://git.kernel.org/stable/c/94869bb0de69a812f70231b0eb480bb2f7ae73a6 |
| https://git.kernel.org/stable/c/c7a268b33882d5feaafd29c1734456f41ba41396 |
| https://git.kernel.org/stable/c/1d7a5aae884ca727d41c7ed15d4c82fdb67c040c |
| https://git.kernel.org/stable/c/f2658d5966bcee8c3eb487875f459756d4f7cdfc |
| https://git.kernel.org/stable/c/0a692c625e373fef692ffbc7fc41f8a025f01cb7 |
| https://git.kernel.org/stable/c/ebbb7bb9e80305820dc2328a371c1b35679f2667 |
