| 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-2024-56680: media: intel/ipu6: do not handle interrupts when device is disabled |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: intel/ipu6: do not handle interrupts when device is disabled |
| |
| Some IPU6 devices have shared interrupts. We need to handle properly |
| case when interrupt is triggered from other device on shared irq line |
| and IPU6 itself disabled. In such case we get 0xffffffff from |
| ISR_STATUS register and handle all irq's cases, for what we are not |
| not prepared and usually hang the whole system. |
| |
| To avoid the issue use pm_runtime_get_if_active() to check if |
| the device is enabled and prevent suspending it when we handle irq |
| until the end of irq. Additionally use synchronize_irq() in suspend |
| |
| The Linux kernel CVE team has assigned CVE-2024-56680 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.10 with commit ab29a2478e709b8fbb4715c51709275907c185db and fixed in 6.11.11 with commit ed4524c87249edc3104f6bb28ab11325bed3d536 |
| Issue introduced in 6.10 with commit ab29a2478e709b8fbb4715c51709275907c185db and fixed in 6.12.2 with commit 57241487a3648515c9aa6fa89e31f2414eccfdbc |
| Issue introduced in 6.10 with commit ab29a2478e709b8fbb4715c51709275907c185db and fixed in 6.13 with commit 1429826883bb18847092b2e04c6598ef34bae1d4 |
| |
| 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-2024-56680 |
| 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/intel/ipu6/ipu6-buttress.c |
| drivers/media/pci/intel/ipu6/ipu6.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/ed4524c87249edc3104f6bb28ab11325bed3d536 |
| https://git.kernel.org/stable/c/57241487a3648515c9aa6fa89e31f2414eccfdbc |
| https://git.kernel.org/stable/c/1429826883bb18847092b2e04c6598ef34bae1d4 |
