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drm/amd/display: check dc_state_create_copy() for NULL in dm_suspend

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: check dc_state_create_copy() for NULL in dm_suspend dc_state_create_copy() can return NULL on allocation failure. dm_suspend() only conditionally skips dm_gpureset_toggle_interrupts() and continues execution, returning success. dm_resume() then dereferences the NULL cached_dc_state in link_enc_cfg_copy() and the following dc_state->stream_count loop, crashing during GPU reset recovery. Return -ENOMEM immediately if the copy fails, so the caller aborts suspend instead of leaving a NULL cached state for resume. (cherry picked from commit 84b6d7932fdd2857795a257f9f258562a3cddcab)

Products
Kernel
Affected versions
Not specified
Fixed versions
5.15.224, 6.1.191, 6.12.113, 6.18.56, 6.6.160, 7.2.10
CVEs
CVE-2026-98785
Confirmed fixed CVEs
Not specified
Updated in this feed
2 Nov 2026, 23:09 UTC · Revision 1

Source evidence

drm/amd/display: check dc_state_create_copy() for NULL in dm_suspend

core-osv · Original source

Published 18 Oct 2026, 15:48 UTC

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: check dc_state_create_copy() for NULL in dm_suspend dc_state_create_copy() can return NULL on allocation failure. dm_suspend() only conditionally skips dm_gpureset_toggle_interrupts() and continues execution, returning success. dm_resume() then dereferences the NULL cached_dc_state in link_enc_cfg_copy() and the following dc_state->stream_count loop, crashing during GPU reset recovery. Return -ENOMEM immediately if the copy fails, so the caller aborts suspend instead of leaving a NULL cached state for resume. (cherry picked from commit 84b6d7932fdd2857795a257f9f258562a3cddcab)

osv:CVE-2026-98785

Kernel

Fixed versions: 5.15.224, 6.1.191, 6.6.160, 6.12.113, 6.18.56, 7.2.10

Complete source record
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  "url": "https://osv.dev/vulnerability/CVE-2026-98785",
  "method": "structured",
  "payload": {
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    "title": "drm/amd/display: check dc_state_create_copy() for NULL in dm_suspend",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: check dc_state_create_copy() for NULL in dm_suspend dc_state_create_copy() can return NULL on allocation failure. dm_suspend() only conditionally skips dm_gpureset_toggle_interrupts() and continues execution, returning success. dm_resume() then dereferences the NULL cached_dc_state in link_enc_cfg_copy() and the following dc_state->stream_count loop, crashing during GPU reset recovery. Return -ENOMEM immediately if the copy fails, so the caller aborts suspend instead of leaving a NULL cached state for resume. (cherry picked from commit 84b6d7932fdd2857795a257f9f258562a3cddcab)",
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