| 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-2021-47610: drm/msm: Fix null ptr access msm_ioctl_gem_submit() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/msm: Fix null ptr access msm_ioctl_gem_submit() |
| |
| Fix the below null pointer dereference in msm_ioctl_gem_submit(): |
| |
| 26545.260705: Call trace: |
| 26545.263223: kref_put+0x1c/0x60 |
| 26545.266452: msm_ioctl_gem_submit+0x254/0x744 |
| 26545.270937: drm_ioctl_kernel+0xa8/0x124 |
| 26545.274976: drm_ioctl+0x21c/0x33c |
| 26545.278478: drm_compat_ioctl+0xdc/0xf0 |
| 26545.282428: __arm64_compat_sys_ioctl+0xc8/0x100 |
| 26545.287169: el0_svc_common+0xf8/0x250 |
| 26545.291025: do_el0_svc_compat+0x28/0x54 |
| 26545.295066: el0_svc_compat+0x10/0x1c |
| 26545.298838: el0_sync_compat_handler+0xa8/0xcc |
| 26545.303403: el0_sync_compat+0x188/0x1c0 |
| 26545.307445: Code: d503201f d503201f 52800028 4b0803e8 (b8680008) |
| 26545.318799: Kernel panic - not syncing: Oops: Fatal exception |
| |
| The Linux kernel CVE team has assigned CVE-2021-47610 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.15.10 with commit f6db3d98f876870c35e96693cfd54752f6199e59 |
| Fixed in 5.16 with commit 26d776fd0f79f093a5d0ce1a4c7c7a992bc3264c |
| |
| 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-2021-47610 |
| 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/msm_gem_submit.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/f6db3d98f876870c35e96693cfd54752f6199e59 |
| https://git.kernel.org/stable/c/26d776fd0f79f093a5d0ce1a4c7c7a992bc3264c |
