Vulnerability CVE-2024-26876

Vulnerability CVE-2024-26876

Published: 2024-04-17

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

References:

https://git.kernel.org/stable/c/955c1252930677762e0db2b6b9e36938c887445c

https://git.kernel.org/stable/c/28a94271bd50e4cf498df0381f776f8ea40a289e

https://git.kernel.org/stable/c/aeedaee5ef5468caf59e2bb1265c2116e0c9a924

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