Bug 2460675 (CVE-2026-31520)

Summary: CVE-2026-31520 kernel: HID: apple: avoid memory leak in apple_report_fixup()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the Linux kernel. Specifically, within the HID (Human Interface Device) Apple driver, the `apple_report_fixup()` function did not properly free a newly allocated memory buffer. This memory leak could lead to resource exhaustion, potentially causing system instability or a denial of service (DoS) for a local user.
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Description OSIDB Bzimport 2026-04-22 15:04:44 UTC 
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.
Comment 1 Keith Grant 2026-04-22 20:14:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026042211-CVE-2026-31520-a81f@gregkh/T