{"id":"CVE-2026-89680","title":"nfsd: fix nfsd_file leak on inter-server COPY setup failure","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: fix nfsd_file leak on inter-server COPY setup failure\n\nWhen nfsd4_setup_inter_ssc() fails, nfsd4_copy() returns\nnfserr_offload_denied directly, bypassing the out:…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-911"],"vendor":"Linux","product":"Linux","affected":["Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < ab949252fdf102ae74329a0caa7995a849d0dafa","Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab","Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 424d5c95108a4809b832cb0a312c61de4aec0078","Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 6ed8d6de7ec90c4ba84eb82673058f506e5777fd","Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 88a76145451d703eedd867b5989bf73d17340399","Linux 5.6"],"published":"2026-09-11","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:48:17.853Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89680","references":[{"url":"https://git.kernel.org/stable/c/ab949252fdf102ae74329a0caa7995a849d0dafa"},{"url":"https://git.kernel.org/stable/c/1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab"},{"url":"https://git.kernel.org/stable/c/424d5c95108a4809b832cb0a312c61de4aec0078"},{"url":"https://git.kernel.org/stable/c/6ed8d6de7ec90c4ba84eb82673058f506e5777fd"},{"url":"https://git.kernel.org/stable/c/88a76145451d703eedd867b5989bf73d17340399"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89680.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89680"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532302"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89680"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89680"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89680.mbox"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00651,"epssPercentile":0.50978,"scores":{"cna":7.5,"vendor":7},"ingestedAt":"2026-09-14T15:23:07.473Z","slug":"CVE-2026-89680","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: fix nfsd_file leak on inter-server COPY setup failure\n\nWhen nfsd4_setup_inter_ssc() fails, nfsd4_copy() returns\nnfserr_offload_denied directly, bypassing the out: label where\nrelease_copy_files() would drop the nf_dst reference taken by\nnfs4_preprocess_stateid_op(). Each failed inter-server COPY\nleaks one nfsd_file, pinning file/inode/dentry/vfsmount.\n\nFix by setting status and jumping to out: instead of returning\ndirectly.\n\n## Affected\n\n- `Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < ab949252fdf102ae74329a0caa7995a849d0dafa`\n- `Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab`\n- `Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 424d5c95108a4809b832cb0a312c61de4aec0078`\n- `Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 6ed8d6de7ec90c4ba84eb82673058f506e5777fd`\n- `Linux >= ce0887ac96d35c7105090e166bb0807dc0a0e838 < 88a76145451d703eedd867b5989bf73d17340399`\n- `Linux 5.6`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89680.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":224626,"id":"CVE-2026-89680","ts":1792401442781,"field":"cvss","old":"7","new":"7.5"},{"seq":208496,"id":"CVE-2026-89680","ts":1790005720735,"field":"cvss","old":"5.3","new":"7"},{"seq":208495,"id":"CVE-2026-89680","ts":1790005720735,"field":"severity","old":"medium","new":"high"},{"seq":202830,"id":"CVE-2026-89680","ts":1789403732580,"field":"cvss","old":"7.5","new":"5.3"},{"seq":202829,"id":"CVE-2026-89680","ts":1789403732580,"field":"severity","old":"high","new":"medium"},{"seq":197750,"id":"CVE-2026-89680","ts":1789384318692,"field":"cvss","old":"5.3","new":"7.5"},{"seq":197749,"id":"CVE-2026-89680","ts":1789384318692,"field":"severity","old":"medium","new":"high"},{"seq":183363,"id":"CVE-2026-89680","ts":1789356675052,"field":"cvss","old":"7.5","new":"5.3"},{"seq":183362,"id":"CVE-2026-89680","ts":1789356675052,"field":"severity","old":"high","new":"medium"},{"seq":153552,"id":"CVE-2026-89680","ts":1789285351253,"field":"cvss","old":null,"new":"7.5"},{"seq":153551,"id":"CVE-2026-89680","ts":1789285351253,"field":"severity","old":"none","new":"high"},{"seq":147396,"id":"CVE-2026-89680","ts":1789270210745,"field":"cvss","old":null,"new":"5.3"},{"seq":147395,"id":"CVE-2026-89680","ts":1789270210745,"field":"severity","old":"none","new":"medium"},{"seq":109160,"id":"CVE-2026-89680","ts":1789183730547,"field":"cvss","old":null,"new":"5.3"},{"seq":109159,"id":"CVE-2026-89680","ts":1789183730547,"field":"severity","old":"none","new":"medium"}]}