High severity · published Sep 11, 2026
CVE-2026-89680
nfsd: fix nfsd_file leak on inter-server COPY setup failure
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved:
nfsd: fix nfsd_file leak on inter-server COPY setup failure
When nfsd4_setup_inter_ssc() fails, nfsd4_copy() returns
nfserr_offload_denied directly, bypassing the out: label where
release_copy_files() would drop the nf_dst reference taken by
nfs4_preprocess_stateid_op(). Each failed inter-server COPY
leaks one nfsd_file, pinning file/inode/dentry/vfsmount.
Fix by setting status and jumping to out: instead of returning
directly.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux · Linux
ce0887ac96d35c7105090e166bb0807dc0a0e838 before ab949252fdf102ae74329a0caa7995a849d0dafa; ce0887ac96d35c7105090e166bb0807dc0a0e838 before 1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab; ce0887ac96d35c7105090e166bb0807dc0a0e838 before 424d5c95108a4809b832cb0a312c61de4aec0078; ce0887ac96d35c7105090e166bb0807dc0a0e838 before 6ed8d6de7ec90c4ba84eb82673058f506e5777fd; ce0887ac96d35c7105090e166bb0807dc0a0e838 before 88a76145451d703eedd867b5989bf73d17340399; 5.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89680
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89680
git.kernel.org
https://git.kernel.org/stable/c/1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab
git.kernel.org
https://git.kernel.org/stable/c/424d5c95108a4809b832cb0a312c61de4aec0078
git.kernel.org
https://git.kernel.org/stable/c/6ed8d6de7ec90c4ba84eb82673058f506e5777fd
git.kernel.org
https://git.kernel.org/stable/c/88a76145451d703eedd867b5989bf73d17340399
git.kernel.org
https://git.kernel.org/stable/c/ab949252fdf102ae74329a0caa7995a849d0dafa
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