CVE-2026-80892
Vulnerability Scoring
Analysis In Progress
CVE-2026-80892 Vulnerability Analysis & Exploit Details
CVE-2026-80892
Attack Complexity Details
-
Attack Complexity:
Attack Complexity Analysis In Progress
-
Attack Vector:
Attack Vector Under Analysis
-
Privileges Required:
None
No authentication is required for exploitation.
-
Scope:
Impact is confined to the initially vulnerable component.
-
User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2026-80892 Details
Status: Received on 04 Sep 2026, 18:17 UTC
Published on: 04 Sep 2026, 18:17 UTC
CVSS Release:
CVE-2026-80892 Vulnerability Summary
CVE-2026-80892: In the Linux kernel, the following vulnerability has been resolved: erofs: cap LZMA stream pool size fs/erofs/decompressor_lzma.c sizes the module-global MicroLZMA stream pool from num_possible_cpus() when the lzma_streams module parameter is unset, then z_erofs_load_lzma_config() preallocates one image-supplied dictionary per stream, accepting dictionaries up to 8 MiB. On high-CPU systems, a small EROFS image can pin hundreds of MiB of vmalloc-backed decoder state until the erofs module is unloaded. Impact: An EROFS image mounted by the system can pin up to 8 MiB of vmalloc memory per LZMA stream, either as intended or unexpectedly. Bound the default stream count by a new CONFIG_EROFS_FS_ZIP_LZMA_DEFAULT_MAX_STREAMS option, default 16, so the worst-case default preallocation is 128 MiB if the number of CPUs is no less than 16 while preserving the existing per-image dictionary limit. An explicit lzma_streams module parameter is still honoured as-is, so administrators who deliberately size the pool are not affected.
Assessing the Risk of CVE-2026-80892
Access Complexity Graph
The exploitability of CVE-2026-80892 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-2026-80892
No exploitability data is available for CVE-2026-80892.
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-2026-80892, 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-2026-80892, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
-
Confidentiality:
None
CVE-2026-80892 does not compromise confidentiality.
-
Integrity:
None
CVE-2026-80892 does not impact data integrity.
-
Availability:
None
CVE-2026-80892 does not affect system availability.
CVE-2026-80892 References
External References
- https://git.kernel.org/stable/c/0c676903cb2a61992ded8e7907609cc6b0f11744
- https://git.kernel.org/stable/c/5aaa06dfc10f8398c8807453dbec738ea9af10e4
- https://git.kernel.org/stable/c/682cb3ece37fc5141e73bc726ccf4adb833e5189
- https://git.kernel.org/stable/c/c9b47e6b23114e939b17f818471c7a46e59006e7
- https://git.kernel.org/stable/c/e52da169b8c0d19bb2d803f2a07fe0e5a00462d6
- https://git.kernel.org/stable/c/e8b3d09aa8889dda9be9cbb3d2f0218c4b9acde4
CWE Common Weakness Enumeration
Unknown
Protect Your Infrastructure against CVE-2026-80892: Combat Critical CVE Threats
Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.
Other 5 Recently Published CVEs Vulnerabilities
- CVE-2026-89172 – Improper protection of physical side channels vulnerability in Microchip AN1044, Microchip AN953, and Microchip SW300052. This issue affects AN104...
- CVE-2026-85200 – The GEO my WP plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 4.5.5.3 via the gmw_posts_locator_aj...
- CVE-2026-85198 – The MPG – Multiple Page Generator, Bulk Landing Pages & Programmatic SEO plugin for WordPress is vulnerable to generic SQL Injection via URL Path i...
- CVE-2026-78175 – The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and includin...
- CVE-2026-78159 – The The Events Calendar plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 6.17.3 via the parse_arra...