EUVD-2026-76657
GHSA-93g4-3jvg-hjgx
Lifecycle Timeline
1DescriptionCVE.org
In the Linux kernel, the following vulnerability has been resolved:
debugfs: Fix lockdown check for mmap_prepare
Commit 651fdda8406d ("relay: update relay to use mmap_prepare") changed the mmap file operation to mmap_prepare for relayfs, but the lockdown check in debugfs was not updated accordingly.
This prevents debugfs from being locked down when the kernel is in integrity mode if a file uses mmap_prepare but not mmap.
Since the conversion to mmap_prepare across the kernel is not yet complete, update the lockdown check to look for both mmap and mmap_prepare to ensure comprehensive coverage.
Analysis
In the Linux kernel, the following vulnerability has been resolved: debugfs: Fix lockdown check for mmap_prepare Commit 651fdda8406d ("relay: update relay to use mmap_prepare") changed the mmap file operation to mmap_prepare for relayfs, but the lockdown check in debugfs was not updated accordingly. This prevents debugfs from being locked down when the kernel is in integrity mode if a file uses mmap_prepare but not mmap. …
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