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CVE-2026-31520: HID: apple: avoid memory leak in apple_report_fixup()

• 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: 2026-04-22 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: HID: apple: avoid memory leak in apple_report_fixup() The apple_report_fixup() function was returning a newly kmemdup()-allocated buffer, but never freeing it. The caller of report_fixup() does not take ownership of the returned pointer, but it *is* permitted to return a sub-portion of the input rdesc, whose lifetime is managed by the caller.

Affected products

• Linux kernel: from 5.17 before 6.1.168; from 6.2 before 6.6.131; from 6.7 before 6.12.80; from 6.13 before 6.18.21; from 6.19 before 6.19.11; 7.0-rc1, 7.0-rc2 — fixed in 6.1.168, 6.12.80, 6.18.21, 6.19.11, 6.6.131

How to fix

Upgrade to a fixed version: Linux kernel 6.1.168, 6.12.80, 6.18.21, 6.19.11. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/239c15116d80f67d32f00acc34575f1a6b699613
• https://git.kernel.org/stable/c/2635d0c715f3fb177e0f80ecd5fa48feb6bf3884
• https://git.kernel.org/stable/c/31860c3f7ac66ab897a8c90dc4e74fa17ca0b624
• https://git.kernel.org/stable/c/be1a341c161430282acdfe2ac99b413271575cf1
• https://git.kernel.org/stable/c/e2f090aeb7b9930a964e151910f4d45b04c8a7e5
• https://git.kernel.org/stable/c/e652ebd29928181c3e6820e303da25873e9917d4

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