| 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-2023-52589: media: rkisp1: Fix IRQ disable race issue |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: rkisp1: Fix IRQ disable race issue |
| |
| In rkisp1_isp_stop() and rkisp1_csi_disable() the driver masks the |
| interrupts and then apparently assumes that the interrupt handler won't |
| be running, and proceeds in the stop procedure. This is not the case, as |
| the interrupt handler can already be running, which would lead to the |
| ISP being disabled while the interrupt handler handling a captured |
| frame. |
| |
| This brings up two issues: 1) the ISP could be powered off while the |
| interrupt handler is still running and accessing registers, leading to |
| board lockup, and 2) the interrupt handler code and the code that |
| disables the streaming might do things that conflict. |
| |
| It is not clear to me if 2) causes a real issue, but 1) can be seen with |
| a suitable delay (or printk in my case) in the interrupt handler, |
| leading to board lockup. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52589 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.6 with commit 25cb42af9ffabffec499e9e69e2fd3797774ce5b and fixed in 6.1.77 with commit bf808f58681cab64c81cd814551814fd34e540fe |
| Issue introduced in 5.6 with commit 25cb42af9ffabffec499e9e69e2fd3797774ce5b and fixed in 6.6.16 with commit fab483438342984f2a315fe13c882a80f0f7e545 |
| Issue introduced in 5.6 with commit 25cb42af9ffabffec499e9e69e2fd3797774ce5b and fixed in 6.7.4 with commit 7bb1a2822aa2c2de4e09bf7c56dd93bd532f1fa7 |
| Issue introduced in 5.6 with commit 25cb42af9ffabffec499e9e69e2fd3797774ce5b and fixed in 6.8 with commit 870565f063a58576e8a4529f122cac4325c6b395 |
| |
| 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-2023-52589 |
| 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/platform/rockchip/rkisp1/rkisp1-csi.c |
| drivers/media/platform/rockchip/rkisp1/rkisp1-isp.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/bf808f58681cab64c81cd814551814fd34e540fe |
| https://git.kernel.org/stable/c/fab483438342984f2a315fe13c882a80f0f7e545 |
| https://git.kernel.org/stable/c/7bb1a2822aa2c2de4e09bf7c56dd93bd532f1fa7 |
| https://git.kernel.org/stable/c/870565f063a58576e8a4529f122cac4325c6b395 |
