blob: 2cecad778af6e92cc9531df1795772176f9d1c13 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
|
vpc file causes qemu-img to consume lots of time and memory
The attached vpc file causes 'qemu-img info' to consume 3 or 4 seconds of CPU time and 1.3 GB of heap, causing a minor denial of service.
$ /usr/bin/time ~/d/qemu/qemu-img info afl12.img
block-vpc: The header checksum of 'afl12.img' is incorrect.
qemu-img: Could not open 'afl12.img': block-vpc: free_data_block_offset points after the end of file. The image has been truncated.
1.19user 3.15system 0:04.35elapsed 99%CPU (0avgtext+0avgdata 1324504maxresident)k
0inputs+0outputs (0major+327314minor)pagefaults 0swaps
The file was found using american-fuzzy-lop.
|