| 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-2021-47645: media: staging: media: zoran: calculate the right buffer number for zoran_reap_stat_com |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: staging: media: zoran: calculate the right buffer number for zoran_reap_stat_com |
| |
| On the case tmp_dcim=1, the index of buffer is miscalculated. |
| This generate a NULL pointer dereference later. |
| |
| So let's fix the calcul and add a check to prevent this to reappear. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47645 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.10.110 with commit bafec1a6ba4b187a7fcdcfce0faebdc623d4ef8e |
| Fixed in 5.15.33 with commit 7e76f3ed7ab2ae026c6ef9cc23096a7554af8c52 |
| Fixed in 5.16.19 with commit 20db2ed1e2f9fcd417fa67853e5154f0c2537d6c |
| Fixed in 5.17.2 with commit 20811bbe685ca3eddd34b0c750860427d7030910 |
| Fixed in 5.18 with commit e3b86f4e558cea9eed71d894df2f19b10d60a207 |
| |
| 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-2021-47645 |
| 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/staging/media/zoran/zoran_device.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/bafec1a6ba4b187a7fcdcfce0faebdc623d4ef8e |
| https://git.kernel.org/stable/c/7e76f3ed7ab2ae026c6ef9cc23096a7554af8c52 |
| https://git.kernel.org/stable/c/20db2ed1e2f9fcd417fa67853e5154f0c2537d6c |
| https://git.kernel.org/stable/c/20811bbe685ca3eddd34b0c750860427d7030910 |
| https://git.kernel.org/stable/c/e3b86f4e558cea9eed71d894df2f19b10d60a207 |
