CVE-2026-74421

CVE CVE-2026-74421EUVD EUVD-2026-59568Published 2026-08-15T05:59:25.000ZLast changed 2026-08-17T05:19:06.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: drm/rockchip: dw_dp: Switch to drmm_kzalloc() Driver makes use of drmm_encoder_init() to initialize the encoder and automatically handle the cleanup by registering drm_encoder_cleanup() with drmm_add_action(). However, the internal structure containing the encoder part gets allocated with devm_kzalloc(), which happens while component_bind_all() is being called from Rockchip DRM driver. The component framework further ensures it is deallocated as part of releasing all the resources claimed during bind, which is triggered from component_unbind_all(). When the reference to the DRM device gets eventually dropped via drm_dev_put() in rockchip_drm_unbind(), drmm_encoder_alloc_release() attempts to access the now released encoder structure, leading to use-after-free. Ensure driver's internal structure is still reachable on encoder cleanup by switching from a device-managed allocation to a drm-managed one.

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 d68ba7bac9555d05e2f5b310c898b2a5c7eff174 <6b0b92d1110eccccbd5ba2949bd2b9fb6ea5fc12; d68ba7bac9555d05e2f5b310c898b2a5c7eff174 <ed9da8d23020352ad24c528db09b5acdd78b81fd; patch: 7.1.5; d68ba7bac9555d05e2f5b310c898b2a5c7eff174 <0d60b835bca42f0f790689dd47819ed881a92ccc; patch: 6.18.40; patch: 0; 6.18; patch: 7.2

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

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.