CVE-2024-36917 block: fix overflow in blk_ioctl_discard()

In the Linux kernel, the following vulnerability has been resolved: block: fix overflow in blkioctldiscard There is no check for overflow of 'start + len' in blkioctldiscard. Hung task occurs if submit an discard ioctl with the following param: start = 0x80000000000ff000, len = 0x8000000000fff000...

CVE-2024-36917

CVE-2024-36917 : In the Linux kernel, a vulnerability in blk_ioctl_discard() allowed an overflow of start+len, potentially causing a hung task when a discard ioctl with start=0x80000000000ff000 and len=0x8000000000fff000 was submitted. A patch was added to validate the overflow, preventing the NU...