CVE-2026-68279
Vulnerability Scoring
Analysis In Progress
CVE-2026-68279 Vulnerability Analysis & Exploit Details
CVE-2026-68279
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2026-68279 Details
Status: Received on 10 Aug 2026, 13:20 UTC
Last updated: 🕐 23 Aug 2026, 13:16 UTC
Originally published on: 🕐 10 Aug 2026, 13:20 UTC
Time between publication and last update: 12 days
CVSS Release:
CVE-2026-68279 Vulnerability Summary
CVE-2026-68279: In the Linux kernel, the following vulnerability has been resolved: drm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers drm_dp_sideband_parse_remote_dpcd_read() reads num_bytes from the raw message and then unconditionally does: memcpy(bytes, &raw->msg[idx], num_bytes); without checking that idx + num_bytes <= raw->curlen. raw->msg[] is 256 bytes; if a malicious or misbehaving MST hub sets num_bytes larger than the remaining payload, the memcpy reads past the received data into whatever follows in raw->msg[]. drm_dp_sideband_parse_remote_i2c_read_ack() has the same flaw (noted with a /* TODO check */ comment since the code was introduced). Fix both functions by using a single combined check (idx + num_bytes > curlen) before each memcpy. Since num_bytes is u8, it is always >= 0, so this strictly subsumes the simpler idx > curlen form and no separate step is needed. [added missing fixes tag]
Assessing the Risk of CVE-2026-68279
Access Complexity Graph
The exploitability of CVE-2026-68279 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2026-68279
No exploitability data is available for CVE-2026-68279.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2026-68279, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2026-68279, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2026-68279 does not compromise confidentiality.
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Integrity:
None
CVE-2026-68279 does not impact data integrity.
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Availability:
None
CVE-2026-68279 does not affect system availability.
CVE-2026-68279 References
External References
- https://git.kernel.org/stable/c/04d953f50d61e542e94a5977822cc53735f8c0ce
- https://git.kernel.org/stable/c/185de1d74e658e2edb723ba76fa61903f77d8a68
- https://git.kernel.org/stable/c/1a8f537f5a1eeac941f262fe73078d6b08ba83c0
- https://git.kernel.org/stable/c/22d9f7fc1aaabaf73d5f30e8b0c9aa814ecd6ed2
- https://git.kernel.org/stable/c/533d9e2bede4aeefdc2a0561d7071cfede95958f
- https://git.kernel.org/stable/c/c2fbda0fe0163c55ba3820ee6cea0c6b43622eda
- https://git.kernel.org/stable/c/d7b9b1e33b4ed8c48d4db6e6e21c257ebbbb2586
- https://git.kernel.org/stable/c/e6ef5455b06cb4e5d181aabcd723791587c79f12
CWE Common Weakness Enumeration
Unknown
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