# CVE-2026-72313: linux: In the Linux kernel, the following vulnerability has been resolved:  drm/fb-helper: Only consider active CRTCs for vb...

CVE-2026-72313 is fixed in linux on 1 platform by DEBIAN-CVE-2026-72313 (version 7.1.5-1), released August 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-72313
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 15, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  drm/fb-helper: Only consider active CRTCs for vblank sync  Only synchronize fbdev output to the vblank of an active CRTC. Go over the list of CRTCs and pick the first that matches. Fixes warnings as the one shown below  [   77.201354] WARNING: drivers/gpu/drm/drm_vblank.c:1320 at drm_crtc_wait_one_vblank+0x194/0x1cc [drm], CPU#1: kworker/1:7/1867 [   77.201354] omapdrm omapdrm.0: [drm] vblank wait timed out on crtc 0  This currently happens if the fbdev output is not on CRTC 0.  Atomic and non-atomic drivers require distinct code paths. As for other fbdev operations, implement both and select the correct one at runtime.  Not finding an active CRTC is not a bug. Do not wait in this case, but flush the display update as before.  v4: - avoid possible deadlocks with locking context (Sashiko) v3: - drop excessive state validation (Jani) - acquire plane and CRTC mutices (Sashiko) v2: - move look-up code into separate helper - support drivers with legacy modesetting v1: - see https://lore.kernel.org/dri-devel/1c9e0e24-9c4a-4259-8700-cf9e5fd60ca3@suse.de/

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.1.5-1 | [DEBIAN-CVE-2026-72313](https://patchblox.com/security/data/fix/linux/debian-cve-2026-72313.md) | Aug 15, 2026 |

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Data as of 2026-11-09T13:31:49Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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