diff options
| author | Philippe Mathieu-Daudé <philmd@redhat.com> | 2021-12-18 17:09:11 +0100 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2022-03-21 10:24:51 +0100 |
| commit | 79fa99831debc9782087e834382c577215f2f511 (patch) | |
| tree | 71c6da4b9272efa4366169dc1853d500220fd2a4 /hw/audio/intel-hda.c | |
| parent | be5a8cf347d0c47ee3e933dde075526fd8bd5c40 (diff) | |
hw/audio/intel-hda: Restrict DMA engine to memories (not MMIO devices)
Issue #542 reports a reentrancy problem when the DMA engine accesses
the HDA controller I/O registers. Fix by restricting the DMA engine
to memories regions (forbidding MMIO devices such the HDA controller).
Reported-by: OSS-Fuzz (Issue 28435)
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/542
CVE: CVE-2021-3611
Message-Id: <20211218160912.1591633-3-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'hw/audio/intel-hda.c')
| -rw-r--r-- | hw/audio/intel-hda.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/audio/intel-hda.c b/hw/audio/intel-hda.c index 47a36acc71..78a47bc08c 100644 --- a/hw/audio/intel-hda.c +++ b/hw/audio/intel-hda.c @@ -345,7 +345,7 @@ static void intel_hda_corb_run(IntelHDAState *d) static void intel_hda_response(HDACodecDevice *dev, bool solicited, uint32_t response) { - const MemTxAttrs attrs = MEMTXATTRS_UNSPECIFIED; + const MemTxAttrs attrs = { .memory = true }; HDACodecBus *bus = HDA_BUS(dev->qdev.parent_bus); IntelHDAState *d = container_of(bus, IntelHDAState, codecs); hwaddr addr; |