What’s Vulnerable › Vulnerabilities

CVE-2022-50142: intel_th: msu: Fix vmalloced buffers

• Severity: high (CVSS 7.8 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: 2025-06-18 · updated 2026-06-17
• Weakness: CWE-787

Description

In the Linux kernel, the following vulnerability has been resolved: intel_th: msu: Fix vmalloced buffers After commit f5ff79fddf0e ("dma-mapping: remove CONFIG_DMA_REMAP") there's a chance of DMA buffer getting allocated via vmalloc(), which messes up the mmapping code: > RIP: msc_mmap_fault [intel_th_msu] > Call Trace: > <TASK> > __do_fault > do_fault ... Fix this by accounting for vmalloc possibility.

Affected products

• Linux kernel: from 5.2 before 5.4.211; from 5.5 before 5.10.137; from 5.11 before 5.15.61; from 5.16 before 5.18.18; from 5.19 before 5.19.2 — fixed in 5.10.137, 5.15.61, 5.18.18, 5.19.2, 5.4.211

How to fix

Upgrade to a fixed version: Linux kernel 5.10.137, 5.15.61, 5.18.18, 5.19.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0ed72c6bc632cbf8d979ac60f982ff84b7bb610a
• https://git.kernel.org/stable/c/4914c50670b6a531e2cb17cd984cc565b4681312
• https://git.kernel.org/stable/c/566887bad7ff2297d6b3f9659c702ba075f3d62d
• https://git.kernel.org/stable/c/6ae2881c1d1fa0e33f4763b7c786f8ef05a9c828
• https://git.kernel.org/stable/c/ac12ad3ccf6d386e64a9d6a890595a2509d24edd
• https://git.kernel.org/stable/c/b5d924cb4c7b952eaa61622f14427723a78137a3

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