CVE-2025-39688
published 2025-04-18CVE-2025-39688: In the Linux kernel, the following vulnerability has been resolved: nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid() The pynfs DELEG8…
PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.56%
43.7th percentile
In the Linux kernel, the following vulnerability has been resolved:
nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid()
The pynfs DELEG8 test fails when run against nfsd. It acquires a
delegation and then lets the lease time out. It then tries to use the
deleg stateid and expects to see NFS4ERR_DELEG_REVOKED, but it gets
bad NFS4ERR_BAD_STATEID instead.
When a delegation is revoked, it's initially marked with
SC_STATUS_REVOKED, or SC_STATUS_ADMIN_REVOKED and later, it's marked
with the SC_STATUS_FREEABLE flag, which denotes that it is waiting for
s FREE_STATEID call.
nfs4_lookup_stateid() accepts a statusmask that includes the status
flags that a found stateid is allowed to have. Currently, that mask
never includes SC_STATUS_FREEABLE, which means that revoked delegations
are (almost) never found.
Add SC_STATUS_FREEABLE to the always-allowed status flags, and remove it
from nfsd4_delegreturn() since it's now always implied.
Affected
19 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.12.25-1 (forky) | linux 6.12.25-1 (forky) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 6.11.6 < 6.12 | 6.12 |
| linux | linux | >= 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a < 52e209203c35a4fbff8af23cd3613efe5df40102 | 52e209203c35a4fbff8af23cd3613efe5df40102 |
| linux | linux | >= 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a < dc6f3295905d7185e71091870119a8c11c3808cc | dc6f3295905d7185e71091870119a8c11c3808cc |
| linux | linux | >= 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a < 5bcb44e650bc4ec7eac23df90c5e011a77fa2beb | 5bcb44e650bc4ec7eac23df90c5e011a77fa2beb |
| linux | linux | >= 8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a < d1bc15b147d35b4cb7ca99a9a7d79d41ca342c13 | d1bc15b147d35b4cb7ca99a9a7d79d41ca342c13 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.12.25-1 | 6.12.25-1 |
| linux | linux_kernel | >= 0 < 6.12.25-1 | 6.12.25-1 |
| linux | linux_kernel | >= 0 < 6.14.0-22.22 | 6.14.0-22.22 |
| linux | linux_kernel | >= 6.11.6 < 6.12 | 6.12 |
| linux | linux_kernel | >= 6.12.1 < 6.12.23 | 6.12.23 |
| linux | linux_kernel | >= 6.13 < 6.13.11 | 6.13.11 |
| linux | linux_kernel | >= 6.14 < 6.14.2 | 6.14.2 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.9MEDIUM
vendor_ubuntu5.9MEDIUM
vendor_debian5.5LOW
vendor_redhat5.5MEDIUM
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GHSA
GHSA-53x5-v4j3-g5xm: In the Linux kernel, the following vulnerability has been resolved:
nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid()
The pynf
ghsa_unreviewed·2025-04-18
CVE-2025-39688 [MEDIUM] GHSA-53x5-v4j3-g5xm: In the Linux kernel, the following vulnerability has been resolved:
nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid()
The pynf
In the Linux kernel, the following vulnerability has been resolved:
nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid()
The pynfs DELEG8 test fails when run against nfsd. It acquires a
delegation and then lets the lease time out. It then tries to use the
deleg stateid and expects to see NFS4ERR_DELEG_REVOKED, but it gets
bad NFS4ERR_BAD_STATEID instead.
When a delegation is revoked, it's initially marked with
SC_STATUS_REVOKED, or SC_STATUS_ADMIN_REVOKED and later, it's marked
with the SC_STATUS_FREEABLE flag, which denotes that it is waiting for
s FREE_STATEID call.
nfs4_lookup_stateid() accepts a statusmask that includes the status
flags that a found stateid is allowed to have. Currently, that mask
never includes SC_STATUS_FREEABLE, which means that revoked delega
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CVE-2025-39688: In the Linux kernel, the following vulnerability has been resolved: nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid() The pynfs
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CVE-2025-39688 [MEDIUM] CVE-2025-39688: In the Linux kernel, the following vulnerability has been resolved: nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid() The pynfs
In the Linux kernel, the following vulnerability has been resolved: nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid() The pynfs DELEG8 test fails when run against nfsd. It acquires a delegation and then lets the lease time out. It then tries to use the deleg stateid and expects to see NFS4ERR_DELEG_REVOKED, but it gets bad NFS4ERR_BAD_STATEID instead. When a delegation is revoked, it's initially marked with SC_STATUS_REVOKED, or SC_STATUS_ADMIN_REVOKED and later, it's marked with the SC_STATUS_FREEABLE flag, which denotes that it is waiting for s FREE_STATEID call. nfs4_lookup_stateid() accepts a statusmask that includes the status flags that a found stateid is allowed to have. Currently, that mask never includes SC_STATUS_FREEABLE, which means that revoked delegation
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Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drivers;
-
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An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Serial ATA and Parallel ATA drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Bus devices;
- TPM device driver;
- Clock framework and drivers;
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- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
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upcalls. An attacker could use this to expose sensitive information.
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Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drive
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It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly verify the target namespace when handling
upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drivers;
- DMA engi
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upcalls. An attacker could use this to expose sensitive information.
(CVE-2025-2312)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- x86 architecture;
- Compute Acceleration Framework;
- ACPI drivers;
- Ublk userspace block driver;
- Compressed RAM block device driver;
- Bus devices;
- AMD CDX bus driver;
- Clock framework and drivers;
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Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Serial ATA and Parallel ATA drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Bus devices;
- TPM device driver;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsyst
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Summary: Several security issues were fixed in the Linux kernel.
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM32 architecture;
- ARM64 architecture;
- PowerPC architecture;
- RISC-V architecture;
- User-Mode Linux (UML);
- x86 architecture;
- Block layer subsystem;
- Cryptographic API;
- Compute Acceleration Framework;
- ACPI drivers;
- Serial ATA and Parallel ATA drivers;
- Drivers core;
- Ublk userspace block driver;
- Bluetooth drivers;
- Bus devices;
- TPM device driver;
- Clock framework and drivers;
- CPU frequency scaling framework;
- Buffer Sharing and Synchronization framework;
- DMA engine subsystem;
- GP
Red Hat
kernel: nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid()
vendor_redhat·2025-04-18·CVSS 5.5
CVE-2025-39688 [MEDIUM] CWE-99 kernel: nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid()
kernel: nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid()
In the Linux kernel, the following vulnerability has been resolved:
nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid()
The pynfs DELEG8 test fails when run against nfsd. It acquires a
delegation and then lets the lease time out. It then tries to use the
deleg stateid and expects to see NFS4ERR_DELEG_REVOKED, but it gets
bad NFS4ERR_BAD_STATEID instead.
When a delegation is revoked, it's initially marked with
SC_STATUS_REVOKED, or SC_STATUS_ADMIN_REVOKED and later, it's marked
with the SC_STATUS_FREEABLE flag, which denotes that it is waiting for
s FREE_STATEID call.
nfs4_lookup_stateid() accepts a statusmask that includes the status
flags that a found stateid is allowed to have. Currently,
Debian
CVE-2025-39688: linux - In the Linux kernel, the following vulnerability has been resolved: nfsd: allow...
vendor_debian·2025·CVSS 5.5
CVE-2025-39688 [MEDIUM] CVE-2025-39688: linux - In the Linux kernel, the following vulnerability has been resolved: nfsd: allow...
In the Linux kernel, the following vulnerability has been resolved: nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid() The pynfs DELEG8 test fails when run against nfsd. It acquires a delegation and then lets the lease time out. It then tries to use the deleg stateid and expects to see NFS4ERR_DELEG_REVOKED, but it gets bad NFS4ERR_BAD_STATEID instead. When a delegation is revoked, it's initially marked with SC_STATUS_REVOKED, or SC_STATUS_ADMIN_REVOKED and later, it's marked with the SC_STATUS_FREEABLE flag, which denotes that it is waiting for s FREE_STATEID call. nfs4_lookup_stateid() accepts a statusmask that includes the status flags that a found stateid is allowed to have. Currently, that mask never includes SC_STATUS_FREEABLE, which means that revoked delegation
No detection rules found.
No public exploits indexed.
2025-04-18
Published