CVE-2026-43205
Vulnerability Scoring
Analysis In Progress
CVE-2026-43205 Vulnerability Analysis & Exploit Details
CVE-2026-43205
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-2026-43205 Details
Status: Awaiting Analysis
Published on: 06 May 2026, 12:16 UTC
CVSS Release:
CVE-2026-43205 Vulnerability Summary
CVE-2026-43205: In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: validate num_ifs to prevent out-of-bounds write The driver obtains sw_attr.num_ifs from firmware via dpsw_get_attributes() but never validates it against DPSW_MAX_IF (64). This value controls iteration in dpaa2_switch_fdb_get_flood_cfg(), which writes port indices into the fixed-size cfg->if_id[DPSW_MAX_IF] array. When firmware reports num_ifs >= 64, the loop can write past the array bounds. Add a bound check for num_ifs in dpaa2_switch_init(). dpaa2_switch_fdb_get_flood_cfg() appends the control interface (port num_ifs) after all matched ports. When num_ifs == DPSW_MAX_IF and all ports match the flood filter, the loop fills all 64 slots and the control interface write overflows by one entry. The check uses >= because num_ifs == DPSW_MAX_IF is also functionally broken. build_if_id_bitmap() silently drops any ID >= 64: if (id[i] < DPSW_MAX_IF) bmap[id[i] / 64] |= ...
Assessing the Risk of CVE-2026-43205
Access Complexity Graph
The exploitability of CVE-2026-43205 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-2026-43205
No exploitability data is available for CVE-2026-43205.
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-2026-43205, 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-2026-43205, 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-2026-43205 does not compromise confidentiality.
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Integrity:
None
CVE-2026-43205 does not impact data integrity.
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Availability:
None
CVE-2026-43205 does not affect system availability.
CVE-2026-43205 References
External References
- https://git.kernel.org/stable/c/89764cf44544e943230f5e03b8c40a90da26537c
- https://git.kernel.org/stable/c/8a5752c6dcc085a3bfc78589925182e4e98468c5
- https://git.kernel.org/stable/c/8b841fd529db9faf8bc678d429d4bf4e98b10900
- https://git.kernel.org/stable/c/a26dda3bae469c8e4e1b1993ad33dafa32d0fc28
- https://git.kernel.org/stable/c/a3034a8d56174dd6464c46823438f25797910a8d
- https://git.kernel.org/stable/c/b690635d4719214892855b79ce018d4b1672ac96
- https://git.kernel.org/stable/c/c18493f750208eb4ff1198fc5a02786b8b2d70a6
CWE Common Weakness Enumeration
Unknown
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