Answer in brief
CVE-2025-40172 records a High severity (CVSS 7.8) vulnerability in accel/qaic: Treat remaining == 0 as error in find_and_map_user_pages(). 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 | >=96d3c1cadedb6ae2e8965e19cd12caa244afbd9c <48b1d42286bfef7628b1d6c8c28d4e456c90f725 || >=96d3c1cadedb6ae2e8965e19cd12caa244afbd9c <551f1dfbcb7f3e6ed07f9d6c8c1c64337fcd0ede || >=96d3c1cadedb6ae2e8965e19cd12caa244afbd9c <1ab9733d14cc9987cc5dcd1f0ad1f416e302e2e6 || >=96d3c1cadedb6ae2e8965e19cd12caa244afbd9c <11f08c30a3e4157305ba692f1d44cca5fc9a8fca || d410a96e5cb8c1ec7049c83f2edcd8bbfaf5d9b3 || >=6.4.12 <6.5 | 48b1d42286bfef7628b1d6c8c28d4e456c90f725, 551f1dfbcb7f3e6ed07f9d6c8c1c64337fcd0ede, 1ab9733d14cc9987cc5dcd1f0ad1f416e302e2e6, 11f08c30a3e4157305ba692f1d44cca5fc9a8fca, 6.5 |
| Linux/Linuxgeneric | 6.5 | Not reported |
Published upstream
Nov 12, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 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: accel/qaic: Treat remaining == 0 as error in find_and_map_user_pages() Currently, if find_and_map_user_pages() takes a DMA xfer request from the user with a length field set to 0, or in a rare case, the host receives QAIC_TRANS_DMA_XFER_CONT from the device where resources->xferred_dma_size is equal to the requested transaction size, the function will return 0 before allocating an sgt or setting the fields of the dma_xfer struct. In that case, encode_addr_size_pairs() will try to access the sgt which will lead to a general protection fault. Return an EINVAL in case the user provides a zero-sized ALP, or the device requests continuation after all of the bytes have been transferred.
Quoted source text, attributed separately from HOL analysis.