| 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-2022-49525: media: cx25821: Fix the warning when removing the module |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: cx25821: Fix the warning when removing the module |
| |
| When removing the module, we will get the following warning: |
| |
| [ 14.746697] remove_proc_entry: removing non-empty directory 'irq/21', leaking at least 'cx25821[1]' |
| [ 14.747449] WARNING: CPU: 4 PID: 368 at fs/proc/generic.c:717 remove_proc_entry+0x389/0x3f0 |
| [ 14.751611] RIP: 0010:remove_proc_entry+0x389/0x3f0 |
| [ 14.759589] Call Trace: |
| [ 14.759792] <TASK> |
| [ 14.759975] unregister_irq_proc+0x14c/0x170 |
| [ 14.760340] irq_free_descs+0x94/0xe0 |
| [ 14.760640] mp_unmap_irq+0xb6/0x100 |
| [ 14.760937] acpi_unregister_gsi_ioapic+0x27/0x40 |
| [ 14.761334] acpi_pci_irq_disable+0x1d3/0x320 |
| [ 14.761688] pci_disable_device+0x1ad/0x380 |
| [ 14.762027] ? _raw_spin_unlock_irqrestore+0x2d/0x60 |
| [ 14.762442] ? cx25821_shutdown+0x20/0x9f0 [cx25821] |
| [ 14.762848] cx25821_finidev+0x48/0xc0 [cx25821] |
| [ 14.763242] pci_device_remove+0x92/0x240 |
| |
| Fix this by freeing the irq before call pci_disable_device(). |
| |
| The Linux kernel CVE team has assigned CVE-2022-49525 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.9.318 with commit 4d6295b6d986476232332fffd08575b185f90d81 |
| Fixed in 4.14.283 with commit 5beb85ff7d005ddb7bf604a4f2dc76f01b84b318 |
| Fixed in 4.19.247 with commit 258639bc55a586ee6df92d89786ccf1c71546d70 |
| Fixed in 5.4.198 with commit 222292930c8ecc3516e03ec1f9fa8448be7ff496 |
| Fixed in 5.10.121 with commit 3f94169affa33c9db4a439d88f09cb2ed3a33332 |
| Fixed in 5.15.46 with commit 1f0fc1dfb5fdd456657519a97fab83691b96c6a0 |
| Fixed in 5.17.14 with commit 9d92291698e5cc35a2b8a1106a01ddd7d60ade2d |
| Fixed in 5.18.3 with commit 005fd553f5f10fe8618d92f94ad10f9051eac331 |
| Fixed in 5.19 with commit 2203436a4d24302871617373a7eb21bc17e38762 |
| |
| 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-2022-49525 |
| 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/cx25821/cx25821-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/4d6295b6d986476232332fffd08575b185f90d81 |
| https://git.kernel.org/stable/c/5beb85ff7d005ddb7bf604a4f2dc76f01b84b318 |
| https://git.kernel.org/stable/c/258639bc55a586ee6df92d89786ccf1c71546d70 |
| https://git.kernel.org/stable/c/222292930c8ecc3516e03ec1f9fa8448be7ff496 |
| https://git.kernel.org/stable/c/3f94169affa33c9db4a439d88f09cb2ed3a33332 |
| https://git.kernel.org/stable/c/1f0fc1dfb5fdd456657519a97fab83691b96c6a0 |
| https://git.kernel.org/stable/c/9d92291698e5cc35a2b8a1106a01ddd7d60ade2d |
| https://git.kernel.org/stable/c/005fd553f5f10fe8618d92f94ad10f9051eac331 |
| https://git.kernel.org/stable/c/2203436a4d24302871617373a7eb21bc17e38762 |
