| 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-2024-39464: media: v4l: async: Fix notifier list entry init |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: v4l: async: Fix notifier list entry init |
| |
| struct v4l2_async_notifier has several list_head members, but only |
| waiting_list and done_list are initialized. notifier_entry was kept |
| 'zeroed' leading to an uninitialized list_head. |
| This results in a NULL-pointer dereference if csi2_async_register() fails, |
| e.g. node for remote endpoint is disabled, and returns -ENOTCONN. |
| The following calls to v4l2_async_nf_unregister() results in a NULL |
| pointer dereference. |
| Add the missing list head initializer. |
| |
| The Linux kernel CVE team has assigned CVE-2024-39464 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.6 with commit b8ec754ae4c563f6aab8c0cb47aeb2eae67f1da3 and fixed in 6.6.34 with commit a80d1da923f671c1e6a14e8417cd2f117b27a442 |
| Issue introduced in 6.6 with commit b8ec754ae4c563f6aab8c0cb47aeb2eae67f1da3 and fixed in 6.9.5 with commit 44f6d619c30f0c65fcdd2b6eba70fdb4460d87ad |
| Issue introduced in 6.6 with commit b8ec754ae4c563f6aab8c0cb47aeb2eae67f1da3 and fixed in 6.10 with commit 6d8acd02c4c6a8f917eefac1de2e035521ca119d |
| |
| 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-2024-39464 |
| 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/a80d1da923f671c1e6a14e8417cd2f117b27a442 |
| https://git.kernel.org/stable/c/44f6d619c30f0c65fcdd2b6eba70fdb4460d87ad |
| https://git.kernel.org/stable/c/6d8acd02c4c6a8f917eefac1de2e035521ca119d |
