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CVE-2024-39481: media: mc: Fix graph walk in media_pipeline_start

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-07-05 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: media: mc: Fix graph walk in media_pipeline_start The graph walk tries to follow all links, even if they are not between pads. This causes a crash with, e.g. a MEDIA_LNK_FL_ANCILLARY_LINK link. Fix this by allowing the walk to proceed only for MEDIA_LNK_FL_DATA_LINK links.

Affected products

• Linux kernel: from 6.1 before 6.1.94; from 6.6 before 6.6.34; from 6.9 before 6.9.5 — fixed in 6.1.94, 6.6.34, 6.9.5

How to fix

Upgrade to a fixed version: Linux kernel 6.1.94, 6.6.34, 6.9.5. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/788fd0f11e45ae8d3a8ebbd3452a6e83f92db376
• https://git.kernel.org/stable/c/8a9d420149c477e7c97fbd6453704e4612bdd3fa
• https://git.kernel.org/stable/c/bee9440bc0b6b3b7432f7bfde28656262a3484a2
• https://git.kernel.org/stable/c/e80d9db99b7b6c697d8d952dfd25c3425cf61499
• https://git.kernel.org/stable/c/788fd0f11e45ae8d3a8ebbd3452a6e83f92db376
• https://git.kernel.org/stable/c/8a9d420149c477e7c97fbd6453704e4612bdd3fa
• https://git.kernel.org/stable/c/bee9440bc0b6b3b7432f7bfde28656262a3484a2
• https://git.kernel.org/stable/c/e80d9db99b7b6c697d8d952dfd25c3425cf61499

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