Answer in brief
CVE-2026-74646 records a High severity (CVSS 7.8) vulnerability in misc: fastrpc: take fl->lock when moving mmaps on interrupted invoke. 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.
CVSS is 7.8. 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 | >=76e8e4ace1ed2c97dba3b1370e0e105e07c572bc <3f265e405e5ef85030c3777262e18bb556bc8724 || >=76e8e4ace1ed2c97dba3b1370e0e105e07c572bc <a902fe1f80f58a2335b6be1131866f827ec44d1a || >=76e8e4ace1ed2c97dba3b1370e0e105e07c572bc <af6345159abcbaa550518f31990d2a9558c2d369 || >=76e8e4ace1ed2c97dba3b1370e0e105e07c572bc <efd02f8d1a7449f15809bc18d3cd41aafea75d7e || >=76e8e4ace1ed2c97dba3b1370e0e105e07c572bc <b85a0e91d7d6cd06a53c881a46f749cfcef416a2 | 3f265e405e5ef85030c3777262e18bb556bc8724, a902fe1f80f58a2335b6be1131866f827ec44d1a, af6345159abcbaa550518f31990d2a9558c2d369, efd02f8d1a7449f15809bc18d3cd41aafea75d7e, b85a0e91d7d6cd06a53c881a46f749cfcef416a2 |
| Linux/Linuxgeneric | 6.2 | Not reported |
Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 22, 2026
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: take fl->lock when moving mmaps on interrupted invoke When an invoke is interrupted by a signal, wait_for_completion_interruptible() returns -ERESTARTSYS and fastrpc_internal_invoke() moves every buffer from fl->mmaps onto cctx->invoke_interrupted_mmaps. This list_del()/list_add_tail() walk runs without holding fl->lock, the lock that serialises fl->mmaps in fastrpc_req_mmap() and fastrpc_req_munmap() everywhere else. Take fl->lock around the move, matching every other fl->mmaps accessor.
Quoted source text, attributed separately from HOL analysis.