CVE-2025-22025: nfsd: put dl_stid if fail to queue dl_recall

Q: What is the severity of CVE-2025-22025?

CVE-2025-22025 has been classified as a moderate severity vulnerability in the Linux kernel.

Q: How do I fix CVE-2025-22025?

To fix CVE-2025-22025, upgrade to the latest version of the Linux kernel where the vulnerability has been addressed.

Q: Which versions of the Linux kernel are affected by CVE-2025-22025?

CVE-2025-22025 affects certain versions of the Linux kernel prior to the resolution in the latest release.

Q: What are the potential impacts of exploiting CVE-2025-22025?

Exploitation of CVE-2025-22025 may lead to instability or unexpected behavior in the NFS daemon.

Q: Where can I find more information about CVE-2025-22025?

More information about CVE-2025-22025 can be found in the Linux kernel changelogs and security advisories.

Published Apr 16, 2025

Updated

In the Linux kernel, the following vulnerability has been resolved:

nfsd: put dlstid if fail to queue dlrecall

Before calling nfsd4runcb to queue dlrecall to the callbackwq, we increment the reference count of dlstid. We expect that after the corresponding workstruct is processed, the reference count of dlstid will be decremented through the callback function nfsd4cbrecallrelease. However, if the call to nfsd4runcb fails, the incremented reference count of dlstid will not be decremented correspondingly, leading to the following nfs4stid 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: kmemcachealloc+0x4b9/0x700 nfsd4processopen1+0x34/0x300 nfsd4open+0x2d1/0x9d0 nfsd4proccompound+0x7a2/0xe30 nfsddispatch+0x241/0x3e0 svcprocesscommon+0x5d3/0xcc0 svcprocess+0x2a3/0x320 nfsd+0x180/0x2e0 kthread+0x199/0x1d0 retfromfork+0x30/0x50 retfromforkasm+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: kmemcachealloc+0x4b9/0x700 nfs4allocstid+0x29/0x210 allocinitdeleg+0x92/0x2e0 nfs4setdelegation+0x284/0xc00 nfs4opendelegation+0x216/0x3f0 nfsd4processopen2+0x2b3/0xee0 nfsd4open+0x770/0x9d0 nfsd4proccompound+0x7a2/0xe30 nfsddispatch+0x241/0x3e0 svcprocesscommon+0x5d3/0xcc0 svcprocess+0x2a3/0x320 nfsd+0x180/0x2e0 kthread+0x199/0x1d0 retfromfork+0x30/0x50 retfromforkasm+0x1b/0x30 Fix it by checking the result of nfsd4runcb and call nfs4putstid if fail to queue dlrecall.

Affected Software

224 affected componentsFixes available

Linux Linux kernel

Microsoft azl3 kernel 6.6.85.1-4

Patch available

Microsoft azl3 kernel 6.6.92.2-1

Patch available

Linux Linux kernel<5.10.236

Linux Linux kernel>=5.11<5.15.180

Linux Linux kernel>=5.16<6.1.134

Linux Linux kernel>=6.2<6.6.87

Linux Linux kernel>=6.7<6.12.23

Linux Linux kernel>=6.13<6.13.11

Linux Linux kernel>=6.14<6.14.2

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-azure*

ubuntu/linux-lts-xenial*

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-aws-hwe*

ubuntu/linux-azure*

ubuntu/linux-gcp*

ubuntu/linux-hwe*

ubuntu/linux-hwe-edge*

ubuntu/linux-kvm*

ubuntu/linux-oracle*

ubuntu/linux-fips*

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-aws-5.4*

ubuntu/linux-azure*

ubuntu/linux-azure-4.15*

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-5.4*

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-4.15*

ubuntu/linux-gcp-5.3*

ubuntu/linux-gcp-5.4*

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-5.4*

ubuntu/linux-hwe-edge*

ubuntu/linux-ibm-5.4*

ubuntu/linux-kvm*

ubuntu/linux-oem*

ubuntu/linux-oracle*

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux-oracle-5.4*

ubuntu/linux-raspi-5.4*

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-aws-5.11*

ubuntu/linux-aws-5.13*

ubuntu/linux-aws-5.15<5.15.0-1086.93~20.04.1

5.15.0-1086.93~20.04.1

ubuntu/linux-aws-5.8*

ubuntu/linux-azure*

ubuntu/linux-azure-5.11*

ubuntu/linux-azure-5.13*

ubuntu/linux-azure-5.15<5.15.0-1091.100~20.04.1

5.15.0-1091.100~20.04.1

ubuntu/linux-azure-5.8*

ubuntu/linux-azure-fde*

ubuntu/linux-bluefield*

ubuntu/linux-gcp*

ubuntu/linux-gcp-5.11*

ubuntu/linux-gcp-5.13*

ubuntu/linux-gcp-5.15<5.15.0-1085.94~20.04.1

5.15.0-1085.94~20.04.1

ubuntu/linux-gcp-5.8*

ubuntu/linux-gke*

ubuntu/linux-gke-5.15*

ubuntu/linux-gkeop*

ubuntu/linux-gkeop-5.15*

ubuntu/linux-hwe-5.11*

ubuntu/linux-hwe-5.13*

ubuntu/linux-hwe-5.15<5.15.0-142.152~20.04.1

5.15.0-142.152~20.04.1

ubuntu/linux-hwe-5.8*

ubuntu/linux-ibm*

ubuntu/linux-ibm-5.15<5.15.0-1078.81~20.04.1

5.15.0-1078.81~20.04.1

ubuntu/linux-intel-5.13*

ubuntu/linux-intel-iotg-5.15<5.15.0-1083.89~20.04.1

5.15.0-1083.89~20.04.1

ubuntu/linux-iot*

ubuntu/linux-kvm*

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-142.152~20.04.1

5.15.0-142.152~20.04.1

ubuntu/linux-nvidia-tegra-5.15<5.15.0-1039.39~20.04.1

5.15.0-1039.39~20.04.1

ubuntu/linux-oem-5.10*

ubuntu/linux-oem-5.13*

ubuntu/linux-oem-5.6*

ubuntu/linux-oracle*

ubuntu/linux-oracle-5.11*

ubuntu/linux-oracle-5.13*

ubuntu/linux-oracle-5.15<5.15.0-1083.89~20.04.1

5.15.0-1083.89~20.04.1

ubuntu/linux-oracle-5.8*

ubuntu/linux-raspi*

ubuntu/linux-raspi2*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.11*

ubuntu/linux-riscv-5.15<5.15.0-1081.85~20.04.1

5.15.0-1081.85~20.04.1

ubuntu/linux-riscv-5.8*

ubuntu/linux-xilinx-zynqmp*

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.15.0-142.152

5.15.0-142.152

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1086.93

5.15.0-1086.93

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-aws-6.8<6.8.0-1041.43~22.04.1

6.8.0-1041.43~22.04.1

ubuntu/linux-azure<5.15.0-1091.100

5.15.0-1091.100

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-6.8<6.8.0-1041.47~22.04.1

6.8.0-1041.47~22.04.1

ubuntu/linux-azure-fde<5.15.0-1091.100.1

5.15.0-1091.100.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp<5.15.0-1085.94

5.15.0-1085.94

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gcp-6.8<6.8.0-1042.45~22.04.1

6.8.0-1042.45~22.04.1

ubuntu/linux-gke<5.15.0-1083.89

5.15.0-1083.89

ubuntu/linux-gkeop<5.15.0-1068.76

5.15.0-1068.76

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-hwe-6.8<6.8.0-86.87~22.04.1

6.8.0-86.87~22.04.1

ubuntu/linux-ibm<5.15.0-1078.81

5.15.0-1078.81

ubuntu/linux-ibm-6.8<6.8.0-1039.39~22.04.1

6.8.0-1039.39~22.04.1

ubuntu/linux-intel-iot-realtime*

ubuntu/linux-intel-iotg<5.15.0-1081.87

5.15.0-1081.87

ubuntu/linux-kvm<5.15.0-1082.87

5.15.0-1082.87

ubuntu/linux-lowlatency<5.15.0-142.152

5.15.0-142.152

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-lowlatency-hwe-6.8<6.8.0-86.87.1~22.04.1

6.8.0-86.87.1~22.04.1

ubuntu/linux-nvidia<5.15.0-1080.81

5.15.0-1080.81

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-nvidia-6.8<6.8.0-1041.44~22.04.2

6.8.0-1041.44~22.04.2

ubuntu/linux-nvidia-tegra<5.15.0-1039.39

5.15.0-1039.39

ubuntu/linux-nvidia-tegra-igx<5.15.0-1028.28

5.15.0-1028.28

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1083.89

5.15.0-1083.89

ubuntu/linux-oracle-6.5*

ubuntu/linux-oracle-6.8<6.8.0-1038.39~22.04.1

6.8.0-1038.39~22.04.1

ubuntu/linux-raspi<5.15.0-1080.83

5.15.0-1080.83

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

ubuntu/linux-riscv-6.8<6.8.0-86.87~22.04.1

6.8.0-86.87~22.04.1

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-xilinx-zynqmp<5.15.0-1050.54

5.15.0-1050.54

ubuntu/linux-bluefield<5.15.0-1069.71

5.15.0-1069.71

ubuntu/linux-intel-iot-realtime<5.15.0-1079.81

5.15.0-1079.81

ubuntu/linux-realtime<5.15.0-1086.95

5.15.0-1086.95

ubuntu/linux-realtime-6.8<6.8.1-1036.37~22.04.1

6.8.1-1036.37~22.04.1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips<5.15.0-1086.93+fips1

5.15.0-1086.93+fips1

ubuntu/linux-azure-fips<5.15.0-1091.100+fips1

5.15.0-1091.100+fips1

ubuntu/linux-fips<5.15.0-142.152+fips1

5.15.0-142.152+fips1

ubuntu/linux-gcp-fips<5.15.0-1085.94+fips1

5.15.0-1085.94+fips1

ubuntu/linux<6.8.0-86.87

6.8.0-86.87

ubuntu/linux-aws<6.8.0-1041.43

6.8.0-1041.43

ubuntu/linux-azure<6.8.0-1041.47

6.8.0-1041.47

ubuntu/linux-azure-6.11<6.11.0-1018.18~24.04.1

6.11.0-1018.18~24.04.1

ubuntu/linux-azure-nvidia<6.8.0-1029.32

6.8.0-1029.32

ubuntu/linux-gcp<6.8.0-1042.45

6.8.0-1042.45

ubuntu/linux-gcp-6.11<6.11.0-1016.16~24.04.1

6.11.0-1016.16~24.04.1

ubuntu/linux-gke<6.8.0-1038.43

6.8.0-1038.43

ubuntu/linux-gkeop<6.8.0-1025.28

6.8.0-1025.28

ubuntu/linux-hwe-6.11<6.11.0-28.28~24.04.1

6.11.0-28.28~24.04.1

ubuntu/linux-ibm<6.8.0-1039.39

6.8.0-1039.39

ubuntu/linux-intel*

ubuntu/linux-lowlatency<6.8.0-86.87.1

6.8.0-86.87.1

ubuntu/linux-lowlatency-hwe-6.11<6.11.0-1015.16~24.04.2

6.11.0-1015.16~24.04.2

ubuntu/linux-nvidia<6.8.0-1041.44

6.8.0-1041.44

ubuntu/linux-nvidia-6.11<6.11.0-1012.12

6.11.0-1012.12

ubuntu/linux-nvidia-lowlatency<6.8.0-1041.44.1

6.8.0-1041.44.1

ubuntu/linux-nvidia-tegra<6.8.0-1012.12

6.8.0-1012.12

ubuntu/linux-oem-6.11<6.11.0-1024.24

6.11.0-1024.24

ubuntu/linux-oem-6.8*

ubuntu/linux-oracle<6.8.0-1038.39

6.8.0-1038.39

ubuntu/linux-raspi<6.8.0-1041.45

6.8.0-1041.45

ubuntu/linux-raspi-realtime*

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-xilinx<6.8.0-1018.19

6.8.0-1018.19

ubuntu/linux-bluefield<6.8.0-1012.16

6.8.0-1012.16

ubuntu/linux-raspi-realtime<6.8.0-2032.33

6.8.0-2032.33

ubuntu/linux-realtime<6.8.1-1036.37

6.8.1-1036.37

ubuntu/linux-aws-fips<6.8.0-1041.43+fips1

6.8.0-1041.43+fips1

ubuntu/linux-azure-fips<6.8.0-1044.50+fips1

6.8.0-1044.50+fips1

ubuntu/linux-fips<6.8.0-86.87+fips1

6.8.0-86.87+fips1

ubuntu/linux-gcp-fips<6.8.0-1042.45+fips1

6.8.0-1042.45+fips1

ubuntu/linux-azure-fde*

debian/linux

6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

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Fixed in 5.15.0-142.152~20.04.1
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Fixed in 5.15.0-1078.81~20.04.1
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Fixed in 5.15.0-1083.89~20.04.1
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Fixed in 5.15.0-142.152~20.04.1
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Fixed in 5.15.0-1039.39~20.04.1
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Fixed in 5.15.0-1083.89~20.04.1
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Fixed in 5.15.0-1081.85~20.04.1
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Fixed in 6.8.0-1038.39
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Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 6.8.0-1041.45
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Upgrade ubuntu/linux-xilinx to a version that resolves this vulnerability.
Fixed in 6.8.0-1018.19
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Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 6.8.0-1012.16
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Upgrade ubuntu/linux-raspi-realtime to a version that resolves this vulnerability.
Fixed in 6.8.0-2032.33
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Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.
Fixed in 6.8.1-1036.37
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Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 6.8.0-1041.43+fips1
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Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 6.8.0-1044.50+fips1
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Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 6.8.0-86.87+fips1
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Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 6.8.0-1042.45+fips1
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Upgrade debian/linux to a version that resolves this vulnerability.
Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1
Compensating control
Check the result of nfsd4_run_cb when queuing dl_recall, and call nfs4_put_stid if queuing fails so the incremented dl_stid reference count is decremented.

Event History

Apr 16, 2025

CVE Published

via MITRE·02:11 PM

Data Sourced

via MITRE·02:11 PM

DescriptionSeverity

Data Sourced

via OSV·03:15 PM

DescriptionSeverityAffected Software

Event

via OSV·03:15 PM

Data Sourced

via NVD·03:15 PM

RemedyDescriptionSeverityWeaknessAffected Software

Jul 11, 2025

Data Sourced

via Microsoft·07:00 AM

DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

DSA-5907

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

What is the severity of CVE-2025-22025?

CVE-2025-22025 has been classified as a moderate severity vulnerability in the Linux kernel.

How do I fix CVE-2025-22025?

To fix CVE-2025-22025, upgrade to the latest version of the Linux kernel where the vulnerability has been addressed.

Which versions of the Linux kernel are affected by CVE-2025-22025?

CVE-2025-22025 affects certain versions of the Linux kernel prior to the resolution in the latest release.

What are the potential impacts of exploiting CVE-2025-22025?

Exploitation of CVE-2025-22025 may lead to instability or unexpected behavior in the NFS daemon.

Where can I find more information about CVE-2025-22025?

More information about CVE-2025-22025 can be found in the Linux kernel changelogs and security advisories.

CVE-2025-22025: nfsd: put dl_stid if fail to queue dl_recall

Affected Software

Remediation

Event History

Parent advisories

Peer vulnerabilities

Frequently Asked Questions

What is the severity of CVE-2025-22025?

How do I fix CVE-2025-22025?

Which versions of the Linux kernel are affected by CVE-2025-22025?

What are the potential impacts of exploiting CVE-2025-22025?

Where can I find more information about CVE-2025-22025?

Company

Resources

Contact