CVE-2023-53633: accel/qaic: Fix a leak in map_user_pages()

Severity: medium (CVSS 5.5 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: 2025-10-07 · updated 2026-06-17
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: accel/qaic: Fix a leak in map_user_pages() If get_user_pages_fast() allocates some pages but not as many as we wanted, then the current code leaks those pages. Call put_page() on the pages before returning.

Affected products

Linux kernel: from 6.4 before 6.4.7; 6.5-rc1, 6.5-rc2 — fixed in 6.4.7

How to fix

Upgrade to a fixed version: Linux kernel 6.4.7. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/73274c33d961f4aa0f968f763e2c9f4210b4f4a3
https://git.kernel.org/stable/c/cdcba752a3d48fbe6f05cf2c91ab9497c8daad0c

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