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kernel: drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async

🗓️ 17 Aug 2026 17:13:32Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

Linux kernel AMD DRM stack buffer overflow and out-of-bounds access in dc_process_dmub_aux_transfer_async via unchecked payload length and link_index.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.10aarch64bpftool4.18.0-553.156.1.el8_10bpftool-4.18.0-553.156.1.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lebpftool4.18.0-553.156.1.el8_10bpftool-4.18.0-553.156.1.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xbpftool4.18.0-553.156.1.el8_10bpftool-4.18.0-553.156.1.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64bpftool4.18.0-553.156.1.el8_10bpftool-4.18.0-553.156.1.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64bpftool-debuginfo4.18.0-553.156.1.el8_10bpftool-debuginfo-4.18.0-553.156.1.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lebpftool-debuginfo4.18.0-553.156.1.el8_10bpftool-debuginfo-4.18.0-553.156.1.el8_10.ppc64le.rpm
Red Hat Enterprise Linux8.10s390xbpftool-debuginfo4.18.0-553.156.1.el8_10bpftool-debuginfo-4.18.0-553.156.1.el8_10.s390x.rpm
Red Hat Enterprise Linux8.10x86_64bpftool-debuginfo4.18.0-553.156.1.el8_10bpftool-debuginfo-4.18.0-553.156.1.el8_10.x86_64.rpm
Red Hat Enterprise Linux8.10aarch64kernel4.18.0-553.156.1.el8_10kernel-4.18.0-553.156.1.el8_10.aarch64.rpm
Red Hat Enterprise Linux8.10ppc64lekernel4.18.0-553.156.1.el8_10kernel-4.18.0-553.156.1.el8_10.ppc64le.rpm
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