Answer in brief
CVE-2025-22025 records a High severity (CVSS 7.5) vulnerability in nfsd: put dl_stid if fail to queue dl_recall. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf <b874cdef4e67e5150e07eff0eae1cbb21fb92da1 || >=b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf <cdb796137c57e68ca34518d53be53b679351eb86 || >=b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf <d96587cc93ec369031bcd7658c6adc719873c9fd || >=b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf <9a81cde8c7ce65dd90fb47ceea93a45fc1a2fbd1 || >=b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf <cad3479b63661a399c9df1d0b759e1806e2df3c8 || >=b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf <63b91c8ff4589f5263873b24c052447a28e10ef7 || >=b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf <133f5e2a37ce08c82d24e8fba65e0a81deae4609 || >=b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf <230ca758453c63bd38e4d9f4a21db698f7abada8 | b874cdef4e67e5150e07eff0eae1cbb21fb92da1, cdb796137c57e68ca34518d53be53b679351eb86, d96587cc93ec369031bcd7658c6adc719873c9fd, 9a81cde8c7ce65dd90fb47ceea93a45fc1a2fbd1, cad3479b63661a399c9df1d0b759e1806e2df3c8, 63b91c8ff4589f5263873b24c052447a28e10ef7, 133f5e2a37ce08c82d24e8fba65e0a81deae4609, 230ca758453c63bd38e4d9f4a21db698f7abada8 |
| Linux/Linuxgeneric | 2.6.35 | Not reported |
Published upstream
Apr 16, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: nfsd: put dl_stid if fail to queue dl_recall Before calling nfsd4_run_cb to queue dl_recall to the callback_wq, we increment the reference count of dl_stid. We expect that after the corresponding work_struct is processed, the reference count of dl_stid will be decremented through the callback function nfsd4_cb_recall_release. However, if the call to nfsd4_run_cb fails, the incremented reference count of dl_stid will not be decremented correspondingly, leading to the following nfs4_stid leak: unreferenced object 0xffff88812067b578 (size 344): comm "nfsd", pid 2761, jiffies 4295044002 (age 5541.241s) hex dump (first 32 bytes): 01 00 00 00 6b 6b 6b 6b b8 02 c0 e2 81 88 ff ff ....kkkk........ 00 6b 6b 6b 6b 6b 6b 6b 00 00 00 00 ad 4e ad de .kkkkkkk.....N.. backtrace: kmem_cache_alloc+0x4b9/0x700 nfsd4_process_open1+0x34/0x300 nfsd4_open+0x2d1/0x9d0 nfsd4_proc_compound+0x7a2/0xe30 nfsd_dispatch+0x241/0x3e0 svc_process_common+0x5d3/0xcc0 svc_process+0x2a3/0x320 nfsd+0x180/0x2e0 kthread+0x199/0x1d0 ret_from_fork+0x30/0x50 ret_from_fork_asm+0x1b/0x30 unreferenced object 0xffff8881499f4d28 (size 368): comm "nfsd", pid 2761, jiffies 4295044005 (age 5541.239s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 30 4d 9f 49 81 88 ff ff ........0M.I.... 30 4d 9f 49 81 88 ff ff 20 00 00 00 01 00 00 00 0M.I.... ....... backtrace: kmem_cache_alloc+0x4b9/0x700 nfs4_alloc_stid+0x29/0x210 alloc_init_deleg+0x92/0x2e0 nfs4_set_delegation+0x284/0xc00 nfs4_open_delegation+0x216/0x3f0 nfsd4_process_open2+0x2b3/0xee0 nfsd4_open+0x770/0x9d0 nfsd4_proc_compound+0x7a2/0xe30 nfsd_dispatch+0x241/0x3e0 svc_process_common+0x5d3/0xcc0 svc_process+0x2a3/0x320 nfsd+0x180/0x2e0 kthread+0x199/0x1d0 ret_from_fork+0x30/0x50 ret_from_fork_asm+0x1b/0x30 Fix it by checking the result of nfsd4_run_cb and call nfs4_put_stid if fail to queue dl_recall.
Quoted source text, attributed separately from HOL analysis.