Answer in brief
CVE-2025-71285 records a Unknown severity vulnerability in net: qrtr: Drop the MHI auto_queue feature for IPCR DL channels. 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 | >=227fee5fc99eeb74d43bf68832f6d59d30ac07d8 <ab0bdaf7a7f4f83b947193563f2a483ab87f72db || >=227fee5fc99eeb74d43bf68832f6d59d30ac07d8 <8e130ff078892fa5a6bf272ced7565af58d98a85 || >=227fee5fc99eeb74d43bf68832f6d59d30ac07d8 <7bdff9b9b0c65ac7105416fe3a40686832515e20 || >=227fee5fc99eeb74d43bf68832f6d59d30ac07d8 <8c464e00e0754e016816b1860fa9592dcad80eb2 || >=227fee5fc99eeb74d43bf68832f6d59d30ac07d8 <51731792a25cb312ca94cdccfa139eb46de1b2ef || c682fb70a7dfc25b848a4ff3a385b0471b470606 || >=5.15.63 <5.16 | ab0bdaf7a7f4f83b947193563f2a483ab87f72db, 8e130ff078892fa5a6bf272ced7565af58d98a85, 7bdff9b9b0c65ac7105416fe3a40686832515e20, 8c464e00e0754e016816b1860fa9592dcad80eb2, 51731792a25cb312ca94cdccfa139eb46de1b2ef, 5.16 |
| Linux/Linuxgeneric | 5.17 | Not reported |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 21, 2026
In the Linux kernel, the following vulnerability has been resolved: net: qrtr: Drop the MHI auto_queue feature for IPCR DL channels MHI stack offers the 'auto_queue' feature, which allows the MHI stack to auto queue the buffers for the RX path (DL channel). Though this feature simplifies the client driver design, it introduces race between the client drivers and the MHI stack. For instance, with auto_queue, the 'dl_callback' for the DL channel may get called before the client driver is fully probed. This means, by the time the dl_callback gets called, the client driver's structures might not be initialized, leading to NULL ptr dereference. Currently, the drivers have to workaround this issue by initializing the internal structures before calling mhi_prepare_for_transfer_autoqueue(). But even so, there is a chance that the client driver's internal code path may call the MHI queue APIs before mhi_prepare_for_transfer_autoqueue() is called, leading to similar NULL ptr dereference. This issue has been reported on the Qcom X1E80100 CRD machines affecting boot. So to properly fix all these races, drop the MHI 'auto_queue' feature altogether and let the client driver (QRTR) manage the RX buffers manually. In the QRTR driver, queue the RX buffers based on the ring length during probe and recycle the buffers in 'dl_callback' once they are consumed. This also warrants removing the setting of 'auto_queue' flag from controller drivers. Currently, this 'auto_queue' feature is only enabled for IPCR DL channel. So only the QRTR client driver requires the modification.
Quoted source text, attributed separately from HOL analysis.