CVE-2024-27412

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> power: supply: bq27xxx-i2c: Do not free non existing IRQ<br /> <br /> The bq27xxx i2c-client may not have an IRQ, in which case<br /> client-&gt;irq will be 0. bq27xxx_battery_i2c_probe() already has<br /> an if (client-&gt;irq) check wrapping the request_threaded_irq().<br /> <br /> But bq27xxx_battery_i2c_remove() unconditionally calls<br /> free_irq(client-&gt;irq) leading to:<br /> <br /> [ 190.310742] ------------[ cut here ]------------<br /> [ 190.310843] Trying to free already-free IRQ 0<br /> [ 190.310861] WARNING: CPU: 2 PID: 1304 at kernel/irq/manage.c:1893 free_irq+0x1b8/0x310<br /> <br /> Followed by a backtrace when unbinding the driver. Add<br /> an if (client-&gt;irq) to bq27xxx_battery_i2c_remove() mirroring<br /> probe() to fix this.