Bug 2427115 (CVE-2025-68761)

Summary: CVE-2025-68761 kernel: hfs: fix potential use after free in hfs_correct_next_unused_CNID()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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OS: Linux   
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Description OSIDB Bzimport 2026-01-05 10:02:14 UTC 
In the Linux kernel, the following vulnerability has been resolved:

hfs: fix potential use after free in hfs_correct_next_unused_CNID()

This code calls hfs_bnode_put(node) which drops the refcount and then
dreferences "node" on the next line.  It's only safe to use "node"
when we're holding a reference so flip these two lines around.
Comment 1 Vipul Nair 2026-01-05 12:08:50 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026010551-CVE-2025-68761-7f01@gregkh/T