The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - drm/dp/mst: fix buffer overflows in sideband chunk accumulation drm_dp_sideband_append_payload() has three     related bugs when processing device-provided sideband reply data: 1. Zero-length curchunk_len underflow:
    msg_len is a 6-bit field taken directly from the DP sideband header. If a device sends msg_len=0,     curchunk_len is set to zero. The condition (curchunk_idx >= curchunk_len) is immediately true, and     curchunk_len-1 wraps to 255 (u8 underflow). drm_dp_msg_data_crc4() reads 255 bytes from chunk[48], then     memcpy() writes 255 bytes into msg[], both far out of bounds. 2. chunk[48] overflow: curchunk_len can     reach 63 (6-bit field). chunk[] is only 48 bytes. Multi-iteration payload assembly appends 16-byte blocks     until curchunk_idx reaches curchunk_len, writing up to 15 bytes past the end of chunk[] into msg[]. 3.
    msg[256] overflow: each chunk contributes (curchunk_len-1) bytes to msg[]. No check ensures curlen +     (curchunk_len-1) stays within msg[256], so the memcpy can spill into adjacent struct fields. All three are     reachable from any DP MST device that can forge sideband reply messages on a physical connection.
    (CVE-2026-68278)

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Linux Distros Unpatched Vulnerability : CVE-2026-68278

medium Nessus Plugin ID 334233

Version 1.5