CVE-2026-80790
Vulnerability Scoring
Analysis In Progress
CVE-2026-80790 Vulnerability Analysis & Exploit Details
CVE-2026-80790
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-2026-80790 Details
Status: Received on 04 Sep 2026, 16:18 UTC
Published on: 04 Sep 2026, 16:18 UTC
CVSS Release:
CVE-2026-80790 Vulnerability Summary
CVE-2026-80790: In the Linux kernel, the following vulnerability has been resolved: nvmet-fc: fix invalid free in LS IOD error path nvmet_fc_alloc_ls_iodlist() advances iod while initializing the LS IOD array. If an rqstbuf allocation or response buffer DMA mapping fails, the unwind loop decrements iod past the start of the array. The final kfree(iod) therefore frees an address before the allocated object. This can be reproduced with nvme-fcloop and failslab by setting fail-nth to 6 before creating a target port. KASAN reports: BUG: KASAN: invalid-free in nvmet_fc_register_targetport Free of addr ffff88816cf8ff48 by task nvmet_fail_nth/9552 Free the original allocation base stored in tgtport->iod instead. With this fix applied, the same sysfs write with fail-nth=6 returns -ENOMEM without any KASAN report.
Assessing the Risk of CVE-2026-80790
Access Complexity Graph
The exploitability of CVE-2026-80790 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-2026-80790
No exploitability data is available for CVE-2026-80790.
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-2026-80790, 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-2026-80790, 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-2026-80790 does not compromise confidentiality.
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Integrity:
None
CVE-2026-80790 does not impact data integrity.
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Availability:
None
CVE-2026-80790 does not affect system availability.
CVE-2026-80790 References
External References
- https://git.kernel.org/stable/c/1a8f007faefe8c226ec65896589f8d59b0a8d5a5
- https://git.kernel.org/stable/c/371fb1bf902adaa59be32bd7e904a5317e604fd0
- https://git.kernel.org/stable/c/449e9c4f8db84ad9d9bb288029b230bcf590faa2
- https://git.kernel.org/stable/c/8bce9cd08aae4283badf8ddc11fbb6f57b75a81e
- https://git.kernel.org/stable/c/94334ea92f4d7535f66f86e33681efa94827eddc
- https://git.kernel.org/stable/c/b189c6e408896ccc23d2e76d7738847cdebf1532
- https://git.kernel.org/stable/c/ba98d6796d12258e837ece065d2ecb59d76ce4ff
- https://git.kernel.org/stable/c/bb9489f0dce58da730d3479588d6710d7a2c1b45
- https://git.kernel.org/stable/c/d094582cce9c08516d714e7436a8f3b9211dda90
CWE Common Weakness Enumeration
Unknown
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