What is CVE-2023-53633?

CVE-2023-53633 is a medium-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2025-10-07.

How severe is CVE-2023-53633?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Linux

CVE-2023-53633

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.

EPSS: 0.002 (6.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions 129776ac2e38231fa9c02ce20e116c99de291666, 6.4, 0
Linux Linux_kernel — versions 6.5

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2023-53633?: CVE-2023-53633 is a medium-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2025-10-07.
How severe is CVE-2023-53633?: Medium severity. CVSS v3 base score is 5.5 out of 10.