Answer in brief
CVE-2025-39688 records a Unknown severity vulnerability in nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid(). 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.
A CVSS score is not reported in the current record. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a <52e209203c35a4fbff8af23cd3613efe5df40102 || >=8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a <dc6f3295905d7185e71091870119a8c11c3808cc || >=8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a <5bcb44e650bc4ec7eac23df90c5e011a77fa2beb || >=8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a <d1bc15b147d35b4cb7ca99a9a7d79d41ca342c13 || 967faa26f313a62e7bebc55d5b8122eaee43b929 || >=6.11.6 <6.12 | 52e209203c35a4fbff8af23cd3613efe5df40102, dc6f3295905d7185e71091870119a8c11c3808cc, 5bcb44e650bc4ec7eac23df90c5e011a77fa2beb, d1bc15b147d35b4cb7ca99a9a7d79d41ca342c13, 6.12 |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Apr 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: 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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-39688 records a Unknown severity vulnerability in nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid(). 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.
A CVSS score is not reported in the current record. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a <52e209203c35a4fbff8af23cd3613efe5df40102 || >=8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a <dc6f3295905d7185e71091870119a8c11c3808cc || >=8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a <5bcb44e650bc4ec7eac23df90c5e011a77fa2beb || >=8dd91e8d31febf4d9cca3ae1bb4771d33ae7ee5a <d1bc15b147d35b4cb7ca99a9a7d79d41ca342c13 || 967faa26f313a62e7bebc55d5b8122eaee43b929 || >=6.11.6 <6.12 | 52e209203c35a4fbff8af23cd3613efe5df40102, dc6f3295905d7185e71091870119a8c11c3808cc, 5bcb44e650bc4ec7eac23df90c5e011a77fa2beb, d1bc15b147d35b4cb7ca99a9a7d79d41ca342c13, 6.12 |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Apr 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: 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.
Quoted source text, attributed separately from HOL analysis.