High severity · published Sep 11, 2026
CVE-2026-89668
nfsd: move nfsd_debugfs_init() after nfsd4_init_slabs() in init_nfsd()
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved: nfsd: move nfsd_debugfs_init() after nfsd4_init_slabs() in init_nfsd() nfsd_debugfs_init() runs before nfsd4_init_slabs() in init_nfsd(). If the slab allocation fails, the bare "return retval" bypasses nfsd_debugfs_exit(), leaving orphan debugfs files with stale fops pointers into the freed module text. Move nfsd_debugfs_init() to after the slab init succeeds, so the early return has no debugfs state to clean up. Since debugfs is now the more recently initialized of the two, also update the unwind paths to match reverse-initialization (LIFO) order: run nfsd_debugfs_exit() before nfsd4_free_slabs() in both the init_nfsd() error path and exit_nfsd(). The nfsd debugfs files only reference module-global state and have no dependency on the slab caches, so that reordering is a cleanup with no functional change.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux · Linux
9fe5ea760e64f04412dbed51645a0dac7220d40a before 4ae5d7490ae6a7b83b3d607f88c499f4f85e753a; 9fe5ea760e64f04412dbed51645a0dac7220d40a before ab43ff94f5dfc2b6a080b167b69855eb7655c98b; 9fe5ea760e64f04412dbed51645a0dac7220d40a before 2c390c8a1764d67095fe444401861fac4c049362; 6.16 · source: vendor
Affected product
LI
Linux
Linux
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