cbcvebase.
CVE-2025-22025
published 2025-04-16

CVE-2025-22025: 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…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.53%
42.1th percentile
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.

Affected

27 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.135-1 (bookworm)linux 6.1.135-1 (bookworm)
debianlinux-6.1< linux 6.1.135-1 (bookworm)linux 6.1.135-1 (bookworm)
linuxlinux
linuxlinux>= b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf < b874cdef4e67e5150e07eff0eae1cbb21fb92da1b874cdef4e67e5150e07eff0eae1cbb21fb92da1
linuxlinux>= b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf < cdb796137c57e68ca34518d53be53b679351eb86cdb796137c57e68ca34518d53be53b679351eb86
linuxlinux>= b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf < d96587cc93ec369031bcd7658c6adc719873c9fdd96587cc93ec369031bcd7658c6adc719873c9fd
linuxlinux>= b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf < 9a81cde8c7ce65dd90fb47ceea93a45fc1a2fbd19a81cde8c7ce65dd90fb47ceea93a45fc1a2fbd1
linuxlinux>= b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf < cad3479b63661a399c9df1d0b759e1806e2df3c8cad3479b63661a399c9df1d0b759e1806e2df3c8
linuxlinux>= b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf < 63b91c8ff4589f5263873b24c052447a28e10ef763b91c8ff4589f5263873b24c052447a28e10ef7
linuxlinux>= b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf < 133f5e2a37ce08c82d24e8fba65e0a81deae4609133f5e2a37ce08c82d24e8fba65e0a81deae4609
linuxlinux>= b5a1a81e5c25fb6bb3fdc1812ba69ff6ab638fcf < 230ca758453c63bd38e4d9f4a21db698f7abada8230ca758453c63bd38e4d9f4a21db698f7abada8
linuxlinux_kernel< 5.10.2365.10.236
linuxlinux_kernel>= 0 < 5.10.237-15.10.237-1
linuxlinux_kernel>= 0 < 6.1.135-16.1.135-1
linuxlinux_kernel>= 0 < 6.12.25-16.12.25-1
linuxlinux_kernel>= 0 < 6.12.25-16.12.25-1
linuxlinux_kernel>= 0 < 5.15.0-142.1525.15.0-142.152
linuxlinux_kernel>= 0 < 6.8.0-86.876.8.0-86.87
linuxlinux_kernel>= 0 < 6.14.0-22.226.14.0-22.22
linuxlinux_kernel>= 5.11 < 5.15.1805.15.180
linuxlinux_kernel>= 5.16 < 6.1.1346.1.134
linuxlinux_kernel>= 6.13 < 6.13.116.13.11
linuxlinux_kernel>= 6.14 < 6.14.26.14.2
linuxlinux_kernel>= 6.2 < 6.6.876.6.87
linuxlinux_kernel>= 6.7 < 6.12.236.12.23

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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