UNKNOWN NVD
CVE-2026-89745
In the Linux kernel, the following vulnerability has been resolved: debugfs: Fix lockdown check for mmap_prepare Commit 651fdda8406d ("relay: update relay to
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.
References
- https://git.kernel.org/stable/c/e7f6a6b5741d16fdac7adaecbe0fa52ae756f208
- https://git.kernel.org/stable/c/f81808de37338aac8e167f99bfae647b1b835c70
This unknown severity vulnerability was published on 2026-09-11 via NVD.
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