What’s Vulnerable › Vulnerabilities

CVE-2024-35916: dma-buf: Fix NULL pointer dereference in sanitycheck()

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-19 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: dma-buf: Fix NULL pointer dereference in sanitycheck() If due to a memory allocation failure mock_chain() returns NULL, it is passed to dma_fence_enable_sw_signaling() resulting in NULL pointer dereference there. Call dma_fence_enable_sw_signaling() only if mock_chain() succeeds. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Affected products

• Linux kernel: from 6.1 before 6.1.85; from 6.2 before 6.6.26; from 6.7 before 6.8.5; 6.9-rc1 — fixed in 6.1.85, 6.6.26, 6.8.5

How to fix

Upgrade to a fixed version: Linux kernel 6.1.85, 6.6.26, 6.8.5. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0336995512cdab0c65e99e4cdd47c4606debe14e
• https://git.kernel.org/stable/c/156c226cbbdcf5f3bce7b2408a33b59fab7fae2c
• https://git.kernel.org/stable/c/2295bd846765c766701e666ed2e4b35396be25e6
• https://git.kernel.org/stable/c/eabf131cba1db12005a68378305f13b9090a7a6b
• https://git.kernel.org/stable/c/0336995512cdab0c65e99e4cdd47c4606debe14e
• https://git.kernel.org/stable/c/156c226cbbdcf5f3bce7b2408a33b59fab7fae2c
• https://git.kernel.org/stable/c/2295bd846765c766701e666ed2e4b35396be25e6
• https://git.kernel.org/stable/c/eabf131cba1db12005a68378305f13b9090a7a6b

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