Answer in brief
CVE-2025-21734 records a Unknown severity vulnerability in misc: fastrpc: Fix copy buffer page size. 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 | >=02b45b47fbe84e23699bb6bdc74d4c2780e282b4 <c56ba3ea8e3c9a69a992aad18f7a65e43e51d623 || >=02b45b47fbe84e23699bb6bdc74d4c2780e282b4 <c0464bad0e85fcd5d47e4297d1e410097c979e55 || >=02b45b47fbe84e23699bb6bdc74d4c2780e282b4 <24a79c6bc8de763f7c50f4f84f8b0c183bc25a51 || >=02b45b47fbe84e23699bb6bdc74d4c2780e282b4 <c3f7161123fcbdc64e90119ccce292d8b66281c4 || >=02b45b47fbe84e23699bb6bdc74d4c2780e282b4 <e966eae72762ecfdbdb82627e2cda48845b9dd66 | c56ba3ea8e3c9a69a992aad18f7a65e43e51d623, c0464bad0e85fcd5d47e4297d1e410097c979e55, 24a79c6bc8de763f7c50f4f84f8b0c183bc25a51, c3f7161123fcbdc64e90119ccce292d8b66281c4, e966eae72762ecfdbdb82627e2cda48845b9dd66 |
| Linux/Linuxgeneric | 5.2 | Not reported |
Published upstream
Feb 27, 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: misc: fastrpc: Fix copy buffer page size For non-registered buffer, fastrpc driver copies the buffer and pass it to the remote subsystem. There is a problem with current implementation of page size calculation which is not considering the offset in the calculation. This might lead to passing of improper and out-of-bounds page size which could result in memory issue. Calculate page start and page end using the offset adjusted address instead of absolute address.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-21734 records a Unknown severity vulnerability in misc: fastrpc: Fix copy buffer page size. 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 | >=02b45b47fbe84e23699bb6bdc74d4c2780e282b4 <c56ba3ea8e3c9a69a992aad18f7a65e43e51d623 || >=02b45b47fbe84e23699bb6bdc74d4c2780e282b4 <c0464bad0e85fcd5d47e4297d1e410097c979e55 || >=02b45b47fbe84e23699bb6bdc74d4c2780e282b4 <24a79c6bc8de763f7c50f4f84f8b0c183bc25a51 || >=02b45b47fbe84e23699bb6bdc74d4c2780e282b4 <c3f7161123fcbdc64e90119ccce292d8b66281c4 || >=02b45b47fbe84e23699bb6bdc74d4c2780e282b4 <e966eae72762ecfdbdb82627e2cda48845b9dd66 | c56ba3ea8e3c9a69a992aad18f7a65e43e51d623, c0464bad0e85fcd5d47e4297d1e410097c979e55, 24a79c6bc8de763f7c50f4f84f8b0c183bc25a51, c3f7161123fcbdc64e90119ccce292d8b66281c4, e966eae72762ecfdbdb82627e2cda48845b9dd66 |
| Linux/Linuxgeneric | 5.2 | Not reported |
Published upstream
Feb 27, 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: misc: fastrpc: Fix copy buffer page size For non-registered buffer, fastrpc driver copies the buffer and pass it to the remote subsystem. There is a problem with current implementation of page size calculation which is not considering the offset in the calculation. This might lead to passing of improper and out-of-bounds page size which could result in memory issue. Calculate page start and page end using the offset adjusted address instead of absolute address.
Quoted source text, attributed separately from HOL analysis.