CVE-2025-68761
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.
Affected versions
Linux kernel versions
6.18
and later are affected. Fixed in
6.18.2,
6.19
and their respective stable series.
References
The following references provide additional information about CVE-2025-68761 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/40a1e0142096dd7dd6cb5373841222b528698588
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PatchKernel patch commithttps://git.kernel.org/stable/c/c105e76bb17cf4b55fe89c6ad4f6a0e3972b5b08
Frequently asked questions
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What is CVE-2025-68761?
CVE-2025-68761 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.18 onward and has been patched in 6.18.2 and 6.19. CVE-2025-68761 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-68761?
Yes — CVE-2025-68761 has been patched. Fixed versions include 6.18.2 and 6.19. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-68761 actively exploited?
No — CVE-2025-68761 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.