CVE-2026-52934
Vulnerability Scoring
Analysis In Progress
CVE-2026-52934 Vulnerability Analysis & Exploit Details
CVE-2026-52934
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-2026-52934 Details
Status: Received on 24 Jun 2026, 08:16 UTC
Published on: 24 Jun 2026, 08:16 UTC
CVSS Release:
CVE-2026-52934 Vulnerability Summary
CVE-2026-52934: In the Linux kernel, the following vulnerability has been resolved: batman-adv: tvlv: reject oversized TVLV packets batadv_tvlv_container_ogm_append() builds a TVLV packet section from the tvlv.container_list. The total size of this section is computed by batadv_tvlv_container_list_size(), which sums the sizes of all registered containers. The return type and accumulator in batadv_tvlv_container_list_size() were u16. If the accumulated size exceeds U16_MAX, the value wraps around, causing the subsequent allocation in batadv_tvlv_container_ogm_append() to be undersized. The memcpy-style copy that follows would then write beyond the end of the allocated buffer, corrupting kernel memory. Fix this by widening the return type of batadv_tvlv_container_list_size() to size_t. In batadv_tvlv_container_ogm_append(), check the computed length against U16_MAX before proceeding, and bail out as if the allocation had failed when the limit is exceeded.
Assessing the Risk of CVE-2026-52934
Access Complexity Graph
The exploitability of CVE-2026-52934 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-2026-52934
No exploitability data is available for CVE-2026-52934.
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-2026-52934, 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-2026-52934, 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-2026-52934 does not compromise confidentiality.
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Integrity:
None
CVE-2026-52934 does not impact data integrity.
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Availability:
None
CVE-2026-52934 does not affect system availability.
CVE-2026-52934 References
External References
- https://git.kernel.org/stable/c/13493b00dd1e05a705981e052158652ea23eb482
- https://git.kernel.org/stable/c/1595628a2f877d052eda18865ccf539392c47c04
- https://git.kernel.org/stable/c/6448a49344e87487b61bd88cb850cd694a0f576d
- https://git.kernel.org/stable/c/94a3d72cd9b21116d7c6d5bdc57c11401fc28557
- https://git.kernel.org/stable/c/94db72e9dac202e017ee3db22c59d17e4f3bf171
- https://git.kernel.org/stable/c/c02aa6c0c9d1bea9bb75dea362b75ad225137bae
- https://git.kernel.org/stable/c/ede47988ac5687793745b17c1634a496a2299919
- https://git.kernel.org/stable/c/f50487e3566358b2b982b7801945e858c78ad9ab
CWE Common Weakness Enumeration
Unknown
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