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| author | Denis Rastyogin <gerben@altlinux.org> | 2025-05-06 17:13:37 +0300 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2025-05-22 16:54:05 +0200 |
| commit | ff2ab634e4bb3bddcf5f5ee29e0b46f71e3f4b54 (patch) | |
| tree | 1ba05898a8990838f1c9f926ede7406afa95dd70 /python/scripts | |
| parent | 5562e214e82ae4bcb0b642cc52b304bdc78a58c3 (diff) | |
| download | qemu-ff2ab634e4bb3bddcf5f5ee29e0b46f71e3f4b54.zip qemu-ff2ab634e4bb3bddcf5f5ee29e0b46f71e3f4b54.tar.gz qemu-ff2ab634e4bb3bddcf5f5ee29e0b46f71e3f4b54.tar.bz2 | |
qemu-img: fix offset calculation in bench
This error was discovered by fuzzing qemu-img.
The current offset calculation leads to an EIO error
in block/block-backend.c: blk_check_byte_request():
if (offset > len || len - offset < bytes) {
return -EIO;
}
This triggers the error message:
"qemu-img: Failed request: Input/output error".
Example of the issue:
offset: 260076
len: 260096
bytes: 4096
This fix ensures that offset remains within a valid range.
Signed-off-by: Denis Rastyogin <gerben@altlinux.org>
Message-ID: <20250506141410.100119-1-gerben@altlinux.org>
[kwolf: Fixed up integer overflow]
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'python/scripts')
0 files changed, 0 insertions, 0 deletions