183c086c65
- Disabled skiboot building for PowerPC due to the following issue: https://github.com/open-power/skiboot/issues/265 - Fix possible mremap overflow in the pvrdma (CVE-2021-3582, bsc#1187499) hw-rdma-Fix-possible-mremap-overflow-in-.patch - Ensure correct input on ring init (CVE-2021-3607, bsc#1187539) pvrdma-Ensure-correct-input-on-ring-init.patch - Fix the ring init error flow (CVE-2021-3608, bsc#1187538) pvrdma-Fix-the-ring-init-error-flow-CVE-.patch OBS-URL: https://build.opensuse.org/request/show/908021 OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=662
40 lines
1.5 KiB
Diff
40 lines
1.5 KiB
Diff
From: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
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Date: Wed, 30 Jun 2021 14:46:34 +0300
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Subject: pvrdma: Ensure correct input on ring init (CVE-2021-3607)
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Git-commit: 32e5703cfea07c91e6e84bcb0313f633bb146534
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References: CVE-2021-3607 bsc#1187539
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Check the guest passed a non zero page count
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for pvrdma device ring buffers.
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Fixes: CVE-2021-3607
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Reported-by: VictorV (Kunlun Lab) <vv474172261@gmail.com>
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Reviewed-by: VictorV (Kunlun Lab) <vv474172261@gmail.com>
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Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
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Message-Id: <20210630114634.2168872-1-marcel@redhat.com>
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Reviewed-by: Yuval Shaia <yuval.shaia.ml@gmail.com>
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Tested-by: Yuval Shaia <yuval.shaia.ml@gmail.com>
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Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
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Signed-off-by: Jose R. Ziviani <jziviani@suse.de>
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---
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hw/rdma/vmw/pvrdma_main.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/hw/rdma/vmw/pvrdma_main.c b/hw/rdma/vmw/pvrdma_main.c
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index 84ae8024fcfd86c535aeacc7198a..7c0c3551a8a4952397e1202cfc9f 100644
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--- a/hw/rdma/vmw/pvrdma_main.c
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+++ b/hw/rdma/vmw/pvrdma_main.c
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@@ -92,6 +92,11 @@ static int init_dev_ring(PvrdmaRing *ring, PvrdmaRingState **ring_state,
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uint64_t *dir, *tbl;
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int rc = 0;
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+ if (!num_pages) {
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+ rdma_error_report("Ring pages count must be strictly positive");
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+ return -EINVAL;
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+ }
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+
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dir = rdma_pci_dma_map(pci_dev, dir_addr, TARGET_PAGE_SIZE);
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if (!dir) {
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rdma_error_report("Failed to map to page directory (ring %s)", name);
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