CVE-2026-89680
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | ce0887ac96d35c7105090e166bb0807dc0a0e838 < 1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab | affected |
| Linux | Linux | ce0887ac96d35c7105090e166bb0807dc0a0e838 < 424d5c95108a4809b832cb0a312c61de4aec0078 | affected |
| Linux | Linux | ce0887ac96d35c7105090e166bb0807dc0a0e838 < 6ed8d6de7ec90c4ba84eb82673058f506e5777fd | affected |
| Linux | Linux | ce0887ac96d35c7105090e166bb0807dc0a0e838 < 88a76145451d703eedd867b5989bf73d17340399 | affected |
| Linux | Linux | 5.6 | affected |
| Linux | Linux | 0 < 5.6 | unaffected |
| Linux | Linux | 6.12.109 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.50 <= 6.18.* | unaffected |
| Linux | Linux | 7.2.4 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab
- https://git.kernel.org/stable/c/424d5c95108a4809b832cb0a312c61de4aec0078
- https://git.kernel.org/stable/c/6ed8d6de7ec90c4ba84eb82673058f506e5777fd
- https://git.kernel.org/stable/c/88a76145451d703eedd867b5989bf73d17340399
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