Linux Kernel up to 6.7.10/6.8.1 bridge adv7511_probe uninitialized pointer

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 6.7.10/6.8.1. The impacted element is the function adv7511_probe of the component bridge. Performing a manipulation results in uninitialized pointer. This vulnerability is cataloged as CVE-2024-26876. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.7.10/6.8.1. This affects the function adv7511_probe of the component bridge. The manipulation with an unknown input leads to a uninitialized pointer vulnerability. CWE is classifying the issue as CWE-824. The product accesses or uses a pointer that has not been initialized. This is going to have an impact on availability. The summary by CVE is:

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

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2024-26876 since 02/19/2024. The exploitability is told to be difficult. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 6.7.11, 6.8.2 or 6.9-rc1 eliminates this vulnerability. Applying the patch 955c12529306/28a94271bd50/aeedaee5ef54 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.7.0
• 6.7.1
• 6.7.2
• 6.7.3
• 6.7.4
• 6.7.5
• 6.7.6
• 6.7.7
• 6.7.8
• 6.7.9
• 6.7.10
• 6.8.0
• 6.8.1

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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