{"cve":"CVE-2025-22025","nvd":{"published":"2025-04-16T15:15:55.127","modified":"2026-10-15T22:18:13.680","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: put dl_stid if fail to queue dl_recall\n\nBefore calling nfsd4_run_cb to queue dl_recall to the callback_wq, we\nincrement the reference count of dl_stid.\nWe expect that after the corresponding work_struct is processed, the\nreference count of dl_stid will be decremented through the callback\nfunction nfsd4_cb_recall_release.\nHowever, if the call to nfsd4_run_cb fails, the incremented reference\ncount of dl_stid will not be decremented correspondingly, leading to the\nfollowing nfs4_stid leak:\nunreferenced object 0xffff88812067b578 (size 344):\n  comm \"nfsd\", pid 2761, jiffies 4295044002 (age 5541.241s)\n  hex dump (first 32 bytes):\n    01 00 00 00 6b 6b 6b 6b b8 02 c0 e2 81 88 ff ff  ....kkkk........\n    00 6b 6b 6b 6b 6b 6b 6b 00 00 00 00 ad 4e ad de  .kkkkkkk.....N..\n  backtrace:\n    kmem_cache_alloc+0x4b9/0x700\n    nfsd4_process_open1+0x34/0x300\n    nfsd4_open+0x2d1/0x9d0\n    nfsd4_proc_compound+0x7a2/0xe30\n    nfsd_dispatch+0x241/0x3e0\n    svc_process_common+0x5d3/0xcc0\n    svc_process+0x2a3/0x320\n    nfsd+0x180/0x2e0\n    kthread+0x199/0x1d0\n    ret_from_fork+0x30/0x50\n    ret_from_fork_asm+0x1b/0x30\nunreferenced object 0xffff8881499f4d28 (size 368):\n  comm \"nfsd\", pid 2761, jiffies 4295044005 (age 5541.239s)\n  hex dump (first 32 bytes):\n    01 00 00 00 00 00 00 00 30 4d 9f 49 81 88 ff ff  ........0M.I....\n    30 4d 9f 49 81 88 ff ff 20 00 00 00 01 00 00 00  0M.I.... .......\n  backtrace:\n    kmem_cache_alloc+0x4b9/0x700\n    nfs4_alloc_stid+0x29/0x210\n    alloc_init_deleg+0x92/0x2e0\n    nfs4_set_delegation+0x284/0xc00\n    nfs4_open_delegation+0x216/0x3f0\n    nfsd4_process_open2+0x2b3/0xee0\n    nfsd4_open+0x770/0x9d0\n    nfsd4_proc_compound+0x7a2/0xe30\n    nfsd_dispatch+0x241/0x3e0\n    svc_process_common+0x5d3/0xcc0\n    svc_process+0x2a3/0x320\n    nfsd+0x180/0x2e0\n    kthread+0x199/0x1d0\n    ret_from_fork+0x30/0x50\n    ret_from_fork_asm+0x1b/0x30\nFix it by checking the result of nfsd4_run_cb and call nfs4_put_stid if\nfail to queue dl_recall.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-401"],"references":["https://git.kernel.org/stable/c/133f5e2a37ce08c82d24e8fba65e0a81deae4609","https://git.kernel.org/stable/c/230ca758453c63bd38e4d9f4a21db698f7abada8","https://git.kernel.org/stable/c/63b91c8ff4589f5263873b24c052447a28e10ef7","https://git.kernel.org/stable/c/9a81cde8c7ce65dd90fb47ceea93a45fc1a2fbd1","https://git.kernel.org/stable/c/b874cdef4e67e5150e07eff0eae1cbb21fb92da1"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:01:11.054312287+00:00"},"epss":{"cve":"CVE-2025-22025","score":0.00581,"percentile":0.47472,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}