CVE-2026-68459
Vulnerability Scoring
Analysis In Progress
CVE-2026-68459 Vulnerability Analysis & Exploit Details
CVE-2026-68459
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-2026-68459 Details
Status: Received on 15 Aug 2026, 06:18 UTC
Last updated: 🕕 17 Aug 2026, 06:17 UTC
Originally published on: 🕕 15 Aug 2026, 06:18 UTC
Time between publication and last update: 1 days
CVSS Release:
CVE-2026-68459 Vulnerability Summary
CVE-2026-68459: In the Linux kernel, the following vulnerability has been resolved: f2fs: fix potential deadlock in gc_merge path of f2fs_balance_fs() When we mount device w/ gc_merge mount option, we may suffer below potential deadlock: Kworker GC trehad Truncator - f2fs_write_cache_pages - f2fs_write_single_data_page - f2fs_do_write_data_page - folio_start_writeback --- set writeback flag on folio - f2fs_outplace_write_data : cached folio in internal bio cache - f2fs_balance_fs - wake_up(gc_thread) : wake up gc thread to run foreground GC - finish_wait(fggc_wq) : wait on the waitqueue --- wait on GC thread to finish the work - truncate_inode_pages_range - __filemap_get_folio(, FGP_LOCK) --- lock folio - truncate_inode_partial_folio - folio_wait_writeback --- wait on writeback being cleared - do_garbage_collect - move_data_page - f2fs_get_lock_data_folio - lock on folio --- blocked on folio's lock In order to avoid such deadlock, let's call below functions to commit cached bios in GC_MERGE path of f2fs_balance_fs() as the same as we did in NOGC_MERGE path. - f2fs_submit_merged_write(sbi, DATA); - f2fs_submit_all_merged_ipu_writes(sbi);
Assessing the Risk of CVE-2026-68459
Access Complexity Graph
The exploitability of CVE-2026-68459 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-2026-68459
No exploitability data is available for CVE-2026-68459.
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-2026-68459, 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-2026-68459, 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-2026-68459 does not compromise confidentiality.
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Integrity:
None
CVE-2026-68459 does not impact data integrity.
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Availability:
None
CVE-2026-68459 does not affect system availability.
CVE-2026-68459 References
External References
- https://git.kernel.org/stable/c/1436031b33fa23ab1ce7df5bc5500093413e8acf
- https://git.kernel.org/stable/c/8071500a8124e5a6d47d901a8d5ffd91743107a1
- https://git.kernel.org/stable/c/89479a27fa4e1e11f378b3724944eabceb84f114
- https://git.kernel.org/stable/c/8b4468ec023d0d1b4669dfb867588997cc03a06b
- https://git.kernel.org/stable/c/aa807064473abd6f2cafe419fb77ea402d3e3104
- https://git.kernel.org/stable/c/b885c7783c19c36c7bf899492a0bffcd68afa8c7
- https://git.kernel.org/stable/c/eb02f218aacb36365e0ca2339cbae81fb05d31a5
CWE Common Weakness Enumeration
Unknown
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