CVE-2026-89816

CVE CVE-2026-89816EUVD EUVD-2026-80416Published 2026-09-16T10:30:49.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: drm: Fix drm_crtc_commit leak if signaled when PAGE_FLIP_EVENT is used Commit 1c6ceeee6ebb ("drm/atomic: Fix memleak on ERESTARTSYS during non-blocking commits") fixed a very similar issue when the event was allocated by drm_atomic_helper_setup_commit() itself. However, if the event is allocated in prepare_signaling(), it will also be set to NULL in complete_signaling(), which prevents drm_crtc_commit from being put in __drm_atomic_helper_crtc_destroy_state(). Dropping the reference when the event is set to NULL at complete_signaling() fixes the leak. The leak can be reproduced by sending a signal to the thread using DRM_MODE_PAGE_FLIP_EVENT and using a sw_sync fence to cause the atomic ioctl to block at drm_atomic_helper_wait_for_fences(). It happened both with amdgpu and vkms.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 6.1.188; 24835e442f289813aa568d142a755672a740503c <66b1b309886337745d395bbc158440ab196305ce; patch: 7.3-rc2; 4.9.19 <4.10; 24835e442f289813aa568d142a755672a740503c <c5517b71101f61a45144e3cf77a19626355272de; 4.10.7 <4.11; patch: 0; c75fe7899538890109aad7bbf92b2f304389e825; 24835e442f289813aa568d142a755672a740503c <e2f27b5ed9084feb7bae9ef2bc80de37c92280b1; 4.11; patch: 6.6.157; patch: 5.10.270; patch: 6.12.110; patch: 7.2.5; 2a3241044b1c4ecc13f73b7158881881fb7534a1; 24835e442f289813aa568d142a755672a740503c <e6195b941fdc8d81fc431c9f25539cf6c6234b51; 24835e442f289813aa568d142a755672a740503c <ff73f5f43d032c3da3c534c517f661e8dfeb358a; patch: 6.18.51; 24835e442f289813aa568d142a755672a740503c <6a6a7aae4681a20cd32789fea9a487aaafa0e7a3; 24835e442f289813aa568d142a755672a740503c <866a04137dac7e82a3848851061ff7ed15c2847e; 24835e442f289813aa568d142a755672a740503c <4d4be202165e832d74849b4a68e289a2a377039c; patch: 5.15.221

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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