Answer in brief
CVE-2025-37954 records a Unknown severity vulnerability in smb: client: Avoid race in open_cached_dir with lease breaks. 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 | >=81ba10959970d15c388bf29866b01b62f387e6a3 <2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9 || >=81ba10959970d15c388bf29866b01b62f387e6a3 <571dcf3d27b24800c171aea7b5e04ff06d10e2e9 || >=81ba10959970d15c388bf29866b01b62f387e6a3 <2407265dc32bc8cc45b62a612c2a214ba9038e8b || >=81ba10959970d15c388bf29866b01b62f387e6a3 <3ca02e63edccb78ef3659bebc68579c7224a6ca2 || 436be190fbf81e5d84040dabf9cb7be06a94dc5d || >=6.5.10 <6.6 | 2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9, 571dcf3d27b24800c171aea7b5e04ff06d10e2e9, 2407265dc32bc8cc45b62a612c2a214ba9038e8b, 3ca02e63edccb78ef3659bebc68579c7224a6ca2, 6.6 |
| Linux/Linuxgeneric | 6.6 | Not reported |
Published upstream
May 20, 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: smb: client: Avoid race in open_cached_dir with lease breaks A pre-existing valid cfid returned from find_or_create_cached_dir might race with a lease break, meaning open_cached_dir doesn't consider it valid, and thinks it's newly-constructed. This leaks a dentry reference if the allocation occurs before the queued lease break work runs. Avoid the race by extending holding the cfid_list_lock across find_or_create_cached_dir and when the result is checked.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-37954 records a Unknown severity vulnerability in smb: client: Avoid race in open_cached_dir with lease breaks. 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 | >=81ba10959970d15c388bf29866b01b62f387e6a3 <2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9 || >=81ba10959970d15c388bf29866b01b62f387e6a3 <571dcf3d27b24800c171aea7b5e04ff06d10e2e9 || >=81ba10959970d15c388bf29866b01b62f387e6a3 <2407265dc32bc8cc45b62a612c2a214ba9038e8b || >=81ba10959970d15c388bf29866b01b62f387e6a3 <3ca02e63edccb78ef3659bebc68579c7224a6ca2 || 436be190fbf81e5d84040dabf9cb7be06a94dc5d || >=6.5.10 <6.6 | 2ed98e89ebc2e1bc73534dc3c18cb7843a889ff9, 571dcf3d27b24800c171aea7b5e04ff06d10e2e9, 2407265dc32bc8cc45b62a612c2a214ba9038e8b, 3ca02e63edccb78ef3659bebc68579c7224a6ca2, 6.6 |
| Linux/Linuxgeneric | 6.6 | Not reported |
Published upstream
May 20, 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: smb: client: Avoid race in open_cached_dir with lease breaks A pre-existing valid cfid returned from find_or_create_cached_dir might race with a lease break, meaning open_cached_dir doesn't consider it valid, and thinks it's newly-constructed. This leaks a dentry reference if the allocation occurs before the queued lease break work runs. Avoid the race by extending holding the cfid_list_lock across find_or_create_cached_dir and when the result is checked.
Quoted source text, attributed separately from HOL analysis.