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| author | John Millikin <john@john-millikin.com> | 2022-08-17 14:34:58 +0900 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-09-01 07:42:37 +0200 |
| commit | fe9d8927e265fd723a6dc87cd6d220f4677dbe1f (patch) | |
| tree | 0e2d306704d29e6a06cc10b7a320afcbb31279a1 /hw/scsi/mptsas.c | |
| parent | c6e51f1bb28ed762d2039c063cbb71a8ad29762d (diff) | |
| download | qemu-fe9d8927e265fd723a6dc87cd6d220f4677dbe1f.zip qemu-fe9d8927e265fd723a6dc87cd6d220f4677dbe1f.tar.gz qemu-fe9d8927e265fd723a6dc87cd6d220f4677dbe1f.tar.bz2 | |
scsi: Add buf_len parameter to scsi_req_new()
When a SCSI command is received from the guest, the CDB length implied
by the first byte might exceed the number of bytes the guest sent. In
this case scsi_req_new() will read uninitialized data, causing
unpredictable behavior.
Adds the buf_len parameter to scsi_req_new() and plumbs it through the
call stack.
Signed-off-by: John Millikin <john@john-millikin.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1127
Message-Id: <20220817053458.698416-1-john@john-millikin.com>
[Fill in correct length for adapters other than ESP. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/scsi/mptsas.c')
| -rw-r--r-- | hw/scsi/mptsas.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/hw/scsi/mptsas.c b/hw/scsi/mptsas.c index 706cf0d..a90c254 100644 --- a/hw/scsi/mptsas.c +++ b/hw/scsi/mptsas.c @@ -324,7 +324,8 @@ static int mptsas_process_scsi_io_request(MPTSASState *s, } req->sreq = scsi_req_new(sdev, scsi_io->MsgContext, - scsi_io->LUN[1], scsi_io->CDB, req); + scsi_io->LUN[1], scsi_io->CDB, + scsi_io->CDBLength, req); if (req->sreq->cmd.xfer > scsi_io->DataLength) { goto overrun; |