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CVE-2026-43251: HID: prodikeys: Check presence of pm->input_ep82

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-06 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: HID: prodikeys: Check presence of pm->input_ep82 Fake USB devices can send their own report descriptors for which the input_mapping() hook does not get called. In this case, pm->input_ep82 stays NULL, which leads to a crash later. This does not happen with the real device, but can be provoked by imposing as one.

Affected products

• Linux kernel: from 2.6.35 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.16 — fixed in 5.10.252, 5.15.202, 6.1.165, 6.12.75, 6.18.16, 6.19.6

How to fix

Upgrade to a fixed version: Linux kernel 5.10.252, 5.15.202, 6.1.165, 6.12.75. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3f1b21cc67a15d7d081378a9b8747dd000a017b8
• https://git.kernel.org/stable/c/cee8337e1bad168136aecfe6416ecd7d3aa7529a
• https://git.kernel.org/stable/c/d08f35f843881ec504d7537a9bb728a073db3366
• https://git.kernel.org/stable/c/d5512ce892f774d37c53082adadfcad04f21b50e
• https://git.kernel.org/stable/c/e7ac1cd823cd2e9fcbd5cb0b261d6d35dbb79341
• https://git.kernel.org/stable/c/edccbf7d6dc05d692bde3a89de5a4001f72a0fa4
• https://git.kernel.org/stable/c/ee572578f09f0e743e9383393a75c3a7a0f9b4c2
• https://git.kernel.org/stable/c/f580c79683356632f12f2c2029f2fe936d953aa1

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