CVE-2026-80756
Vulnerability Scoring
Analysis In Progress
CVE-2026-80756 Vulnerability Analysis & Exploit Details
CVE-2026-80756
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-2026-80756 Details
Status: Received on 03 Sep 2026, 13:06 UTC
Published on: 03 Sep 2026, 13:06 UTC
CVSS Release:
CVE-2026-80756 Vulnerability Summary
CVE-2026-80756: In the Linux kernel, the following vulnerability has been resolved: selinux: do not cancel a policy conversion that never started sel_write_load() calls selinux_policy_cancel() when sel_make_policy_nodes() fails, and that helper dereferences the outgoing policy to cancel its sidtab conversion. On the first policy load there is no outgoing policy: security_load_policy() returns early for that case, before it converts anything, and state->policy is still NULL. A first load that fails while building the selinuxfs tree therefore takes a NULL dereference in selinux_policy_cancel(), reached from a write(2) to /sys/fs/selinux/load. Skip the cancel when there is no old policy, mirroring the check security_load_policy() already makes before it converts.
Assessing the Risk of CVE-2026-80756
Access Complexity Graph
The exploitability of CVE-2026-80756 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-2026-80756
No exploitability data is available for CVE-2026-80756.
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-2026-80756, 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-2026-80756, 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-2026-80756 does not compromise confidentiality.
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Integrity:
None
CVE-2026-80756 does not impact data integrity.
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Availability:
None
CVE-2026-80756 does not affect system availability.
CVE-2026-80756 References
External References
- https://git.kernel.org/stable/c/1059789ae9f99cbbe3a78e361e9c0976beb5958b
- https://git.kernel.org/stable/c/1acc317d67a755a45e32419a15d70e403fa43f0e
- https://git.kernel.org/stable/c/1b4ff94ae7c580c880291519fb0e3e2bd075beef
- https://git.kernel.org/stable/c/219c96de5d9b6b4af7e8576ad897b774cc3ee9a7
- https://git.kernel.org/stable/c/2d29983104f06f5b0babcd5a25a0f0408272cd27
- https://git.kernel.org/stable/c/a42932c6aa33d0aac683cacdf1ec7009b955ba5d
- https://git.kernel.org/stable/c/a4f182f8715cb0819445f0850cd5436828f4bafc
- https://git.kernel.org/stable/c/e5c0235a3c4e9eb047a16cd02323fe4ecf2f570e
CWE Common Weakness Enumeration
Unknown
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