| 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-2024-26876: drm/bridge: adv7511: fix crash on irq during probe |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/bridge: adv7511: fix crash on irq during probe |
| |
| Moved IRQ registration down to end of adv7511_probe(). |
| |
| If an IRQ already is pending during adv7511_probe |
| (before adv7511_cec_init) then cec_received_msg_ts |
| could crash using uninitialized data: |
| |
| Unable to handle kernel read from unreadable memory at virtual address 00000000000003d5 |
| Internal error: Oops: 96000004 [#1] PREEMPT_RT SMP |
| Call trace: |
| cec_received_msg_ts+0x48/0x990 [cec] |
| adv7511_cec_irq_process+0x1cc/0x308 [adv7511] |
| adv7511_irq_process+0xd8/0x120 [adv7511] |
| adv7511_irq_handler+0x1c/0x30 [adv7511] |
| irq_thread_fn+0x30/0xa0 |
| irq_thread+0x14c/0x238 |
| kthread+0x190/0x1a8 |
| |
| The Linux kernel CVE team has assigned CVE-2024-26876 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.15 with commit 3b1b975003e4a3da4b93ab032487a3ae4afca7b5 and fixed in 6.6.55 with commit 50f4b57e9a9db4ede9294f39b9e75b5f26bae9b7 |
| Issue introduced in 4.15 with commit 3b1b975003e4a3da4b93ab032487a3ae4afca7b5 and fixed in 6.7.11 with commit 955c1252930677762e0db2b6b9e36938c887445c |
| Issue introduced in 4.15 with commit 3b1b975003e4a3da4b93ab032487a3ae4afca7b5 and fixed in 6.8.2 with commit 28a94271bd50e4cf498df0381f776f8ea40a289e |
| Issue introduced in 4.15 with commit 3b1b975003e4a3da4b93ab032487a3ae4afca7b5 and fixed in 6.9 with commit aeedaee5ef5468caf59e2bb1265c2116e0c9a924 |
| |
| 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-2024-26876 |
| 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/gpu/drm/bridge/adv7511/adv7511_drv.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/50f4b57e9a9db4ede9294f39b9e75b5f26bae9b7 |
| https://git.kernel.org/stable/c/955c1252930677762e0db2b6b9e36938c887445c |
| https://git.kernel.org/stable/c/28a94271bd50e4cf498df0381f776f8ea40a289e |
| https://git.kernel.org/stable/c/aeedaee5ef5468caf59e2bb1265c2116e0c9a924 |
