CVE-2026-89680

nfsd: fix nfsd_file leak on inter-server COPY setup failure

HIGH
7.5
CVSS Score
Published: September 11, 2026 at 07:46 PM UTC
Updated: October 21, 2026 at 01:20 PM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 0.7%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.6ce0887ac96d35c7105090e166bb0807dc0a0e838
Vendor states this is fixed in 1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab (fixed)
Vendor states this is fixed in 424d5c95108a4809b832cb0a312c61de4aec0078 (fixed)
Vendor states this is fixed in 6ed8d6de7ec90c4ba84eb82673058f506e5777fd (fixed)
Vendor states this is fixed in 88a76145451d703eedd867b5989bf73d17340399 (fixed)
Vendor states this is fixed in 5.6 (unaffected)
Vendor states this is fixed in 6.12.109 (unaffected)
Vendor states this is fixed in 6.18.50 (unaffected)
Vendor states this is fixed in 6.6.160 (unaffected)
Vendor states this is fixed in 7.2.4 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

7.5HIGHLinux
Vector?

Quick Info

StatusRECEIVED

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card