| 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-2022-49524: media: pci: cx23885: Fix the error handling in cx23885_initdev() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: pci: cx23885: Fix the error handling in cx23885_initdev() |
| |
| When the driver fails to call the dma_set_mask(), the driver will get |
| the following splat: |
| |
| [ 55.853884] BUG: KASAN: use-after-free in __process_removed_driver+0x3c/0x240 |
| [ 55.854486] Read of size 8 at addr ffff88810de60408 by task modprobe/590 |
| [ 55.856822] Call Trace: |
| [ 55.860327] __process_removed_driver+0x3c/0x240 |
| [ 55.861347] bus_for_each_dev+0x102/0x160 |
| [ 55.861681] i2c_del_driver+0x2f/0x50 |
| |
| This is because the driver has initialized the i2c related resources |
| in cx23885_dev_setup() but not released them in error handling, fix this |
| bug by modifying the error path that jumps after failing to call the |
| dma_set_mask(). |
| |
| The Linux kernel CVE team has assigned CVE-2022-49524 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.14.283 with commit 6041d1a0365baa729b6adfb6ed5386d9388018db |
| Fixed in 4.19.247 with commit 7b9978e1c94e569d65a0e7e719abb9340f5db4a0 |
| Fixed in 5.4.198 with commit fa636e9ee4442215cd9a2e079cd5a8e1fe0cb8ba |
| Fixed in 5.10.121 with commit ca17e7a532d1a55466cc007b3f4d319541a27493 |
| Fixed in 5.15.46 with commit 98106f100f50c487469903b9cf6d966785fc9cc3 |
| Fixed in 5.17.14 with commit 86bd6a579c6c60547706cabf299cd2c9feab3332 |
| Fixed in 5.18.3 with commit 453514a874c78df1e7804e6e3aaa60c8d8deb6a8 |
| Fixed in 5.19 with commit e8123311cf06d7dae71e8c5fe78e0510d20cd30b |
| |
| 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-2022-49524 |
| 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/pci/cx23885/cx23885-core.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/6041d1a0365baa729b6adfb6ed5386d9388018db |
| https://git.kernel.org/stable/c/7b9978e1c94e569d65a0e7e719abb9340f5db4a0 |
| https://git.kernel.org/stable/c/fa636e9ee4442215cd9a2e079cd5a8e1fe0cb8ba |
| https://git.kernel.org/stable/c/ca17e7a532d1a55466cc007b3f4d319541a27493 |
| https://git.kernel.org/stable/c/98106f100f50c487469903b9cf6d966785fc9cc3 |
| https://git.kernel.org/stable/c/86bd6a579c6c60547706cabf299cd2c9feab3332 |
| https://git.kernel.org/stable/c/453514a874c78df1e7804e6e3aaa60c8d8deb6a8 |
| https://git.kernel.org/stable/c/e8123311cf06d7dae71e8c5fe78e0510d20cd30b |
