CVE-2026-80788
Vulnerability Scoring
Analysis In Progress
CVE-2026-80788 Vulnerability Analysis & Exploit Details
CVE-2026-80788
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-2026-80788 Details
Status: Received on 04 Sep 2026, 16:18 UTC
Last updated: 🕒 07 Sep 2026, 15:17 UTC
Originally published on: 🕓 04 Sep 2026, 16:18 UTC
Time between publication and last update: 2 days
CVSS Release:
CVE-2026-80788 Vulnerability Summary
CVE-2026-80788: In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Do not WARN on remotely-controlled oversized SGL allocations When fuzzing the nvme target code, I tripped a kernel warning in nvmet_tcp_map_data() because the length passed into the allocator is controlled by the remote initiator. A remote initiator that sends a command with an SGL claiming a huge number, can create a scatterlist and iovec allocation of over 1 million entries, which causes the backing kmalloc call to exceed MAX_PAGE_ORDER and then the page allocator will trip on a WARN_ON_ONCE_GFP() message: WARNING: mm/page_alloc.c:5280 __alloc_frozen_pages_noprof Workqueue: nvmet_tcp_wq nvmet_tcp_io_work ... sgl_alloc_order nvmet_tcp_map_data nvmet_tcp_try_recv_pdu As it's never good to trip a kernel warning remotely due to many systems having panic-on-warn enabled, let's silence it by just add GFP_NOWARN to the allocation flags.
Assessing the Risk of CVE-2026-80788
Access Complexity Graph
The exploitability of CVE-2026-80788 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-2026-80788
No exploitability data is available for CVE-2026-80788.
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-2026-80788, 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-2026-80788, 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-2026-80788 does not compromise confidentiality.
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Integrity:
None
CVE-2026-80788 does not impact data integrity.
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Availability:
None
CVE-2026-80788 does not affect system availability.
CVE-2026-80788 References
External References
- https://git.kernel.org/stable/c/737a3b535247226f6e1a7988fd9d6e63e7d6fc71
- https://git.kernel.org/stable/c/7b6a54d4e7b0da423c2b53ed293fd36b16c0b19e
- https://git.kernel.org/stable/c/7fd6da0f28932442b51658bac4ff55565ca9b377
- https://git.kernel.org/stable/c/86cc450022473c4a29b43a09f3ec22a9ef566dac
- https://git.kernel.org/stable/c/8d01f0d0e96485e39ad89b859ef85e1dc3020465
- https://git.kernel.org/stable/c/9b770e40bc00381e5ebf53653de5776773415be3
- https://git.kernel.org/stable/c/9c95f7e66c62ee6c6abedcf1c04311f430ff5833
- https://git.kernel.org/stable/c/c509f20be1cabda3087810bb2d658d66b3f31f35
- https://git.kernel.org/stable/c/e7077e6c45423dd2bb7de7b5fc4b018a8e6c4741
CWE Common Weakness Enumeration
Unknown
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