CVE-2023-53002

drm/i915: Fix a memory leak with reused mmap_offset

State: Published
Severity: 5.5 Medium
Published: Mar 27, 2025
Updated: May 11, 2026
Reserved: Mar 27, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

drm/i915: Fix a memory leak with reused mmap_offset

drm_vma_node_allow() and drm_vma_node_revoke() should be called in balanced pairs. We call drm_vma_node_allow() once per-file everytime a user calls mmap_offset, but only call drm_vma_node_revoke once per-file on each mmap_offset. As the mmap_offset is reused by the client, the per-file vm_count may remain non-zero and the rbtree leaked.

Call drm_vma_node_allow_once() instead to prevent that memory leak.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-401 Missing Release of Memory after Effective Lifetime

Affected Products

Product	Versions
LinuxLinux	7865559872074a9ab169c87915504661d630addf to before 0bdc4b4ba7206c452ee81c82fa66e39d0e1780fbAffected 7865559872074a9ab169c87915504661d630addf to before 0220e4fe178c3390eb0291cdb34912d66972db8aAffected
LinuxLinux	5.7Affected before 5.7Not affected 6.1.9 through 6.1.*Not affected 6.2 and laterNot affected

References

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