CVE-2024-35847

In the Linux kernel, the following vulnerability has been resolved:

irqchip/gic-v3-its: Prevent double free on error

The error handling path in itsvpeirqdomainalloc() causes a double free when itsvpeinit() fails after successfully allocating at least one interrupt. This happens because itsvpeirqdomainfree() frees the interrupts along with the area bitmap and the vproppage and itsvpeirqdomainalloc() subsequently frees the area bitmap and the vproppage again.

Fix this by unconditionally invoking itsvpeirqdomainfree() which handles all cases correctly and by removing the bitmap/vproppage freeing from itsvpeirqdomain_alloc().

[ tglx: Massaged change log ]