drm: Fix drm_crtc_commit leak if signaled when PAGE_FLIP_EVENT is used (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 12 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
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.
References
- https://git.kernel.org/stable/c/c5517b71101f61a45144e3cf77a19626355272de
- https://git.kernel.org/stable/c/866a04137dac7e82a3848851061ff7ed15c2847e
- https://git.kernel.org/stable/c/6a6a7aae4681a20cd32789fea9a487aaafa0e7a3
- https://git.kernel.org/stable/c/e2f27b5ed9084feb7bae9ef2bc80de37c92280b1
- https://git.kernel.org/stable/c/ff73f5f43d032c3da3c534c517f661e8dfeb358a
- https://git.kernel.org/stable/c/66b1b309886337745d395bbc158440ab196305ce
- https://git.kernel.org/stable/c/e6195b941fdc8d81fc431c9f25539cf6c6234b51
- https://git.kernel.org/stable/c/4d4be202165e832d74849b4a68e289a2a377039c
European references
- ENISA EUVD · EUVD-2026-80416
- GCVE · GCVE-0-2026-89816
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 24835e442f289813aa568d142a755672a740503c < c5517b71101f61a45144e3cf77a19626355272de ; affected 24835e442f289813aa568d142a755672a740503c < 866a04137dac7e82a3848851061ff7ed15c2847e ; affected 24835e442f289813aa568d142a755672a740503c < 6a6a7aae4681a20cd32789fea9a487aaafa0e7a3 ; affected 24835e442f289813aa568d142a755672a740503c < e2f27b5ed9084feb7bae9ef2bc80de37c92280b1 ; affected 24835e442f289813aa568d142a755672a740503c < ff73f5f43d032c3da3c534c517f661e8dfeb358a ; affected 24835e442f289813aa568d142a755672a740503c < 66b1b309886337745d395bbc158440ab196305ce |
| Linux · Linux | affected 4.11 ; unaffected 0 < 4.11 ; unaffected 5.10.270 ≤ 5.10.* ; unaffected 5.15.221 ≤ 5.15.* ; unaffected 6.1.188 ≤ 6.1.* ; unaffected 6.6.157 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |