CVE-2025-68293

In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: fix NULL pointer deference when splitting folio Commit c010d47f107f ("mm: thp: split huge page to any lower order pages") introduced an early check on the folio's order via mapping->flags before proceeding with the split work. This check introduced a bug: for shmem folios in the swap cache and truncated folios, the mapping pointer can be NULL. Accessing mapping->flags in this state leads directly to a NULL pointer dereference. This commit fixes the issue by moving the check for mapping != NULL before any attempt to access mapping->flags.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/592db83615a9f0164472ec789c2ed34ad35f732f
https://git.kernel.org/stable/c/cff47b9e39a6abf03dde5f4f156f841b0c54bba0
https://git.kernel.org/stable/c/d1b83fbacd4397a1d2f8c6b13427a8636ae2b307

Configurations

No configuration.

History

No history.

Information

Published : 2025-12-16 16:16

Updated : 2026-06-17 09:58

NVD link : CVE-2025-68293

Mitre link : CVE-2025-68293

CVE.ORG link : CVE-2025-68293

JSON object : View

Products Affected

No product.

CWE

No CWE.

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