Linux Kernel Vulnerability Affecting JBD2 Journal Functions
CVE-2025-39782

Currently unrated

Key Information:

Vendor: Linux
Status: Linux
Vendor: CVE Published:; 11 September 2025

What is CVE-2025-39782?

A vulnerability in the Linux kernel's JBD2 journal functions has been identified, where improper management of the j_list_lock can lead to significant delays in processing. The functions jbd2_log_do_checkpoint() and jbd2_journal_shrink_checkpoint_list() release the j_list_lock after processing buffers, but the contention can result in prolonged wait times. Although jbd2_journal_shrink_checkpoint_list() includes measures to prevent soft lockups, jbd2_log_do_checkpoint() relies on potentially non-sleeping functions to trigger rescheduling, which can cause the kernel to experience soft lockups, leading to performance degradation and system instability.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch