| 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-2024-43833: media: v4l: async: Fix NULL pointer dereference in adding ancillary links |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: v4l: async: Fix NULL pointer dereference in adding ancillary links |
| |
| In v4l2_async_create_ancillary_links(), ancillary links are created for |
| lens and flash sub-devices. These are sub-device to sub-device links and |
| if the async notifier is related to a V4L2 device, the source sub-device |
| of the ancillary link is NULL, leading to a NULL pointer dereference. |
| Check the notifier's sd field is non-NULL in |
| v4l2_async_create_ancillary_links(). |
| |
| [Sakari Ailus: Reword the subject and commit messages slightly.] |
| |
| The Linux kernel CVE team has assigned CVE-2024-43833 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.19 with commit aa4faf6eb27132532d5a133d9241254c16d4bafa and fixed in 6.1.103 with commit fe0f92fd5320b393e44ca210805e653ea90cc982 |
| Issue introduced in 5.19 with commit aa4faf6eb27132532d5a133d9241254c16d4bafa and fixed in 6.6.44 with commit 249212ceb4187783af3801c57b92a5a25d410621 |
| Issue introduced in 5.19 with commit aa4faf6eb27132532d5a133d9241254c16d4bafa and fixed in 6.10.3 with commit b87e28050d9b0959de24574d587825cfab2f13fb |
| Issue introduced in 5.19 with commit aa4faf6eb27132532d5a133d9241254c16d4bafa and fixed in 6.11 with commit 9b4667ea67854f0b116fe22ad11ef5628c5b5b5f |
| |
| 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-2024-43833 |
| 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/v4l2-core/v4l2-async.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/fe0f92fd5320b393e44ca210805e653ea90cc982 |
| https://git.kernel.org/stable/c/249212ceb4187783af3801c57b92a5a25d410621 |
| https://git.kernel.org/stable/c/b87e28050d9b0959de24574d587825cfab2f13fb |
| https://git.kernel.org/stable/c/9b4667ea67854f0b116fe22ad11ef5628c5b5b5f |
