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pvrdma: Fix the ring init error flow (CVE-2021-3608) 

Do not unmap uninitialized dma addresses.

Fixes: CVE-2021-3608
Reviewed-by: VictorV (Kunlun Lab) <vv474172261@gmail.com>
Tested-by: VictorV (Kunlun Lab) <vv474172261@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Message-Id: <20210630115246.2178219-1-marcel@redhat.com>
Tested-by: Yuval Shaia <yuval.shaia.ml@gmail.com>
Reviewed-by: Yuval Shaia <yuval.shaia.ml@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
This commit is contained in:
Marcel Apfelbaum 2021-06-30 14:52:46 +03:00
parent 32e5703cfe
commit 66ae37d8cc
1 changed files with 1 additions and 1 deletions
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2
hw/rdma/vmw/pvrdma_dev_ring.c
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@ -41,7 +41,7 @@ int pvrdma_ring_init(PvrdmaRing *ring, const char *name, PCIDevice *dev,
qatomic_set(&ring->ring_state->cons_head, 0);
*/
ring->npages = npages;
ring->pages = g_malloc(npages * sizeof(void *));
ring->pages = g_malloc0(npages * sizeof(void *));
for (i = 0; i < npages; i++) {
if (!tbl[i]) {