| 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-2022-49254: media: ti-vpe: cal: Fix a NULL pointer dereference in cal_ctx_v4l2_init_formats() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: ti-vpe: cal: Fix a NULL pointer dereference in cal_ctx_v4l2_init_formats() |
| |
| In cal_ctx_v4l2_init_formats(), devm_kzalloc() is assigned to |
| ctx->active_fmt and there is a dereference of it after that, which could |
| lead to NULL pointer dereference on failure of devm_kzalloc(). |
| |
| Fix this bug by adding a NULL check of ctx->active_fmt. |
| |
| This bug was found by a static analyzer. |
| |
| Builds with 'make allyesconfig' show no new warnings, and our static |
| analyzer no longer warns about this code. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49254 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.12 with commit 7168155002cf7aadbfaa14a28f037c880a214764 and fixed in 5.15.33 with commit aa613ac270292e102503e9767882e39200efe608 |
| Issue introduced in 5.12 with commit 7168155002cf7aadbfaa14a28f037c880a214764 and fixed in 5.16.19 with commit 91e2805579ab0783eed53acc2bf9fb553e939004 |
| Issue introduced in 5.12 with commit 7168155002cf7aadbfaa14a28f037c880a214764 and fixed in 5.17.2 with commit 1381f1a629a090c251965edb56f849ad648414a4 |
| Issue introduced in 5.12 with commit 7168155002cf7aadbfaa14a28f037c880a214764 and fixed in 5.18 with commit abd77889851d2ead0d0c9c4d29f1808801477b00 |
| |
| 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-2022-49254 |
| 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/media/platform/ti-vpe/cal-video.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/aa613ac270292e102503e9767882e39200efe608 |
| https://git.kernel.org/stable/c/91e2805579ab0783eed53acc2bf9fb553e939004 |
| https://git.kernel.org/stable/c/1381f1a629a090c251965edb56f849ad648414a4 |
| https://git.kernel.org/stable/c/abd77889851d2ead0d0c9c4d29f1808801477b00 |
