CVE-2026-98785NVD
Vulnerability 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)
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)
Affected & Patched Versions
Not provided by NVD for this CVE.
Not provided by NVD for this CVE.
External References
- https://git.kernel.org/stable/c/015e72cde567d2450e282c2790773463156b2d0a
- https://git.kernel.org/stable/c/0b24f9d4e6e8ab64da8f2ae85bd1790d0f6a596f
- https://git.kernel.org/stable/c/197946faa1b7968046ba475ae2f266847c6f51ed
- https://git.kernel.org/stable/c/29302964ef583f3a57efc3c990bc0a71337bd3a4
- https://git.kernel.org/stable/c/686baa1f4ec43b33e39e3d4b4a4539a91d17e883
- https://git.kernel.org/stable/c/7283b78ca07ce491984a63f6288f3f8de5bdcb22
- https://git.kernel.org/stable/c/ed65678bb23a5f5040932960851ac39bdeafb765