Answer in brief
CVE-2026-23357 records a Unknown severity vulnerability in can: mcp251x: fix deadlock in error path of mcp251x_open. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (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), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 2.6.34 | Not reported |
| Linux/Linuxgeneric | >=bf66f3736a945dd4e92d86427276c6eeab0a6c1d <739454057572cb0948658d1142f3fa2c6966465c || >=bf66f3736a945dd4e92d86427276c6eeab0a6c1d <416c18ecddafab0ed09be1e7b9d2f448f3d4db16 || >=bf66f3736a945dd4e92d86427276c6eeab0a6c1d <256f0cff6e946c570392bda1d01a65e789a7afd0 || >=bf66f3736a945dd4e92d86427276c6eeab0a6c1d <b73832292cd914e87a55e863ba4413a907e7db6b || >=bf66f3736a945dd4e92d86427276c6eeab0a6c1d <38063cc435b69d56e76f947c10d336fcb2953508 || >=bf66f3736a945dd4e92d86427276c6eeab0a6c1d <d27f12c3f5e85efc479896af4a69eccb37f75e8e || >=bf66f3736a945dd4e92d86427276c6eeab0a6c1d <e728f444c913a91d290d1824b4770780bbd6378e || >=bf66f3736a945dd4e92d86427276c6eeab0a6c1d <ab3f894de216f4a62adc3b57e9191888cbf26885 | 739454057572cb0948658d1142f3fa2c6966465c, 416c18ecddafab0ed09be1e7b9d2f448f3d4db16, 256f0cff6e946c570392bda1d01a65e789a7afd0, b73832292cd914e87a55e863ba4413a907e7db6b, 38063cc435b69d56e76f947c10d336fcb2953508, d27f12c3f5e85efc479896af4a69eccb37f75e8e, e728f444c913a91d290d1824b4770780bbd6378e, ab3f894de216f4a62adc3b57e9191888cbf26885 |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
Mar 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix deadlock in error path of mcp251x_open The mcp251x_open() function call free_irq() in its error path with the mpc_lock mutex held. But if an interrupt already occurred the interrupt handler will be waiting for the mpc_lock and free_irq() will deadlock waiting for the handler to finish. This issue is similar to the one fixed in commit 7dd9c26bd6cf ("can: mcp251x: fix deadlock if an interrupt occurs during mcp251x_open") but for the error path. To solve this issue move the call to free_irq() after the lock is released. Setting `priv->force_quit = 1` beforehand ensure that the IRQ handler will exit right away once it acquired the lock.
Quoted source text, attributed separately from HOL analysis.