Answer in brief
CVE-2026-74647 records a Unknown severity vulnerability in misc: fastrpc: Remove buffer from list prior to unmap operation. 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 | >=2419e55e532de14fdf336e09e453aa2831c73a25 <97273624f7b356eaf8261609a75cfcb8738a165a || >=2419e55e532de14fdf336e09e453aa2831c73a25 <fe70329055977fc1e8dc6291318d0dd75470795a || >=2419e55e532de14fdf336e09e453aa2831c73a25 <9bf22a7d950cec2d1efeca7f16bb20fcca84c36a || >=2419e55e532de14fdf336e09e453aa2831c73a25 <0beaa9bd7eb10d9b5e6352ed5161f3f3bbd4c3c5 || >=2419e55e532de14fdf336e09e453aa2831c73a25 <6102ceb4eab845743ee57acd3863fbd06e93c927 | 97273624f7b356eaf8261609a75cfcb8738a165a, fe70329055977fc1e8dc6291318d0dd75470795a, 9bf22a7d950cec2d1efeca7f16bb20fcca84c36a, 0beaa9bd7eb10d9b5e6352ed5161f3f3bbd4c3c5, 6102ceb4eab845743ee57acd3863fbd06e93c927 |
| Linux/Linuxgeneric | 5.5 | Not reported |
Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 22, 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: Remove buffer from list prior to unmap operation fastrpc_req_munmap_impl() is called to unmap any buffer. The buffer is getting removed from the list after it is unmapped from DSP. This can create potential race conditions if multiple threads invoke unmap concurrently, where one thread may remove the entry from the list while another thread's unmap operation is still ongoing. Fix this by removing the buffer entry from the list before calling the unmap operation. If the unmap fails, the entry is re-added to the list so that userspace can retry the unmap, or alternatively, the buffer will be cleaned up during device release when the DSP process is torn down and all DSP-side mappings are freed along with remaining buffers in the list.
Quoted source text, attributed separately from HOL analysis.