CVE-2026-68236

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: set new_stream to NULL after release In dm_update_crtc_state(), the skip_modeset path releases new_stream via dc_stream_release() but does not set the pointer to NULL. If a later error (e.g., color management failure) triggers the fail label, the error path calls dc_stream_release() again on the same dangling pointer, causing a double release and potential use-after-free. Fix this by setting new_stream to NULL after the initial release. (cherry picked from commit 99f3af19073b3ddbfd96e789124cce12c4277b28)

References

• https://git.kernel.org/stable/c/0676fecbb5242aa22c057e78326d6d6041db034c
• https://git.kernel.org/stable/c/5182e442e61397d446c36995b8f5676942d35b82
• https://git.kernel.org/stable/c/679f23f0a3606afcef1ffabd72222f00a54ad9e3
• https://git.kernel.org/stable/c/9fa26b9eed6195bf840f39ac183b9a6237548755
• https://git.kernel.org/stable/c/ba8bf1dcbb44773e7a0fd13b42925c644e0d5e76