In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix OOB Read in qrtrendpointpost Syzbot reported slab-out-of-bounds Read in qrtrendpointpost. The problem was in wrong size type: if (len != ALIGN(size, 4) + hdrlen) goto err; If size from qrtrhdr is 4294967293 (0xfffffffd), the result of ALIGN(size, 4) will be 0. In case of len == hdrlen and size == 4294967293 in header this check won't fail and skbput_data(skb, data + hdrlen, size); will read out of bound from data, which is hdrlen allocated block.