| 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-2022-49478: media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init |
| |
| Syzbot reported that -1 is used as array index. The problem was in |
| missing validation check. |
| |
| hdw->unit_number is initialized with -1 and then if init table walk fails |
| this value remains unchanged. Since code blindly uses this member for |
| array indexing adding sanity check is the easiest fix for that. |
| |
| hdw->workpoll initialization moved upper to prevent warning in |
| __flush_work. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49478 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.18 with commit d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and fixed in 4.9.318 with commit 4351bfe36aba9fa7dc9d68d498d25d41a0f45e67 |
| Issue introduced in 2.6.18 with commit d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and fixed in 4.14.283 with commit 2e004fe914b243db41fa96f9e583385f360ea58e |
| Issue introduced in 2.6.18 with commit d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and fixed in 4.19.247 with commit a3660e06675bccec4bf149c7229ea1d491ba10d7 |
| Issue introduced in 2.6.18 with commit d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and fixed in 5.4.198 with commit 1310fc3538dcc375a2f46ef0a438512c2ca32827 |
| Issue introduced in 2.6.18 with commit d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and fixed in 5.10.121 with commit a3304766d9384886e6d3092c776273526947a2e9 |
| Issue introduced in 2.6.18 with commit d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and fixed in 5.15.46 with commit 3309c2c574e13b21b44729f5bdbf21f60189b79a |
| Issue introduced in 2.6.18 with commit d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and fixed in 5.17.14 with commit f99a8b1ec0eddc2931aeaa4f490277a15b39f511 |
| Issue introduced in 2.6.18 with commit d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and fixed in 5.18.3 with commit 24e807541e4a9263ed928e6ae3498de3ad43bd1e |
| Issue introduced in 2.6.18 with commit d855497edbfbf9e19a17f4a1154bca69cb4bd9ba and fixed in 5.19 with commit 471bec68457aaf981add77b4f590d65dd7da1059 |
| |
| 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-2022-49478 |
| 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/usb/pvrusb2/pvrusb2-hdw.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/4351bfe36aba9fa7dc9d68d498d25d41a0f45e67 |
| https://git.kernel.org/stable/c/2e004fe914b243db41fa96f9e583385f360ea58e |
| https://git.kernel.org/stable/c/a3660e06675bccec4bf149c7229ea1d491ba10d7 |
| https://git.kernel.org/stable/c/1310fc3538dcc375a2f46ef0a438512c2ca32827 |
| https://git.kernel.org/stable/c/a3304766d9384886e6d3092c776273526947a2e9 |
| https://git.kernel.org/stable/c/3309c2c574e13b21b44729f5bdbf21f60189b79a |
| https://git.kernel.org/stable/c/f99a8b1ec0eddc2931aeaa4f490277a15b39f511 |
| https://git.kernel.org/stable/c/24e807541e4a9263ed928e6ae3498de3ad43bd1e |
| https://git.kernel.org/stable/c/471bec68457aaf981add77b4f590d65dd7da1059 |
