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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-68771 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix kernel BUG in ocfs2_find_victim_chain syzbot reported a kernel BUG in ocfs2_find_victim_chain() because the `cl_next_free_rec` field of the allocation chain list (next free slot in the chain list) is 0, triggring the BUG_ON(!cl->cl_next_free_rec) condition in ocfs2_find_victim_chain() and panicking the kernel. To fix this, an if condition is introduced in ocfs2_claim_suballoc_bits(), just before calling ocfs2_find_victim_chain(), the code block in it being executed when either of the following conditions is true: 1. `cl_next_free_rec` is equal to 0, indicating that there are no free chains in the allocation chain list 2. `cl_next_free_rec` is greater than `cl_count` (the total number of chains in the allocation chain list) Either of them being true is indicative of the fact that there are no chains left for usage. This is addressed using ocfs2_error(), which prints the error log for debugging purposes, rather than panicking the kernel.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/039bef30e320827bac8990c9f29d2a68cd8adb5f kernel.org
https://git.kernel.org/stable/c/1f77e5cd563e6387fdf3bb714fcda36cd88ac5e7 kernel.org
https://git.kernel.org/stable/c/7acc0390e0dd7474c4451d05465a677d55ad4268 kernel.org
https://git.kernel.org/stable/c/96f1b074c98c20f55a3b23d2ab44d9fb0f619869 kernel.org
https://git.kernel.org/stable/c/b08a33d5f80efe6979a6e8f905c1a898910c21dd kernel.org
https://git.kernel.org/stable/c/d0fd1f732ea8063cecd07a3879b7d815c7ee71ed kernel.org
https://git.kernel.org/stable/c/e24aedae71652d4119049f1fbef6532ccbe3966d kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-68771
NVD Published Date:
01/13/2026
NVD Last Modified:
04/14/2026
Source:
kernel.org