diff options
author | Kai Kang <kai.kang@windriver.com> | 2019-03-15 04:01:19 -0400 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2019-03-19 10:46:15 +0000 |
commit | 489ece1aa90d8f76b4c1f009d837f82e38e11ba9 (patch) | |
tree | 4b1fcd47eaef0be15b2320e95ca2eb52452ffce0 /meta/recipes-devtools/qemu/qemu/0019-fix-CVE-2018-20216.patch | |
parent | f24178993e7b0830510900e80e879c7f9f8e28f0 (diff) | |
download | openembedded-core-contrib-489ece1aa90d8f76b4c1f009d837f82e38e11ba9.tar.gz |
qemu: backport patches to fix cves
CVE: CVE-2018-16872
CVE: CVE-2018-20124
CVE: CVE-2018-20125
CVE: CVE-2018-20126
CVE: CVE-2018-20191
CVE: CVE-2018-20216
Patches 0015-fix-CVE-2018-20124.patch and 0017-fix-CVE-2018-20126.patch
are rebased on current source code. Others are not modified.
Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/0019-fix-CVE-2018-20216.patch')
-rw-r--r-- | meta/recipes-devtools/qemu/qemu/0019-fix-CVE-2018-20216.patch | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/0019-fix-CVE-2018-20216.patch b/meta/recipes-devtools/qemu/qemu/0019-fix-CVE-2018-20216.patch new file mode 100644 index 0000000000..c02bad3bb9 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/0019-fix-CVE-2018-20216.patch @@ -0,0 +1,85 @@ +CVE: CVE-2018-20216 +Upstream-Status: Backport [https://git.qemu.org/?p=qemu.git;a=commit;h=f1e2e38] + +Signed-off-by: Kai Kang <kai.kang@windriver.com> + +From f1e2e38ee0136b7710a2caa347049818afd57a1b Mon Sep 17 00:00:00 2001 +From: Prasad J Pandit <pjp@fedoraproject.org> +Date: Thu, 13 Dec 2018 01:00:39 +0530 +Subject: [PATCH] pvrdma: check return value from pvrdma_idx_ring_has_ routines + +pvrdma_idx_ring_has_[data/space] routines also return invalid +index PVRDMA_INVALID_IDX[=-1], if ring has no data/space. Check +return value from these routines to avoid plausible infinite loops. + +Reported-by: Li Qiang <liq3ea@163.com> +Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> +Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> +Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> +--- + hw/rdma/vmw/pvrdma_dev_ring.c | 29 +++++++++++------------------ + 1 file changed, 11 insertions(+), 18 deletions(-) + +diff --git a/hw/rdma/vmw/pvrdma_dev_ring.c b/hw/rdma/vmw/pvrdma_dev_ring.c +index 01247fc041..e8e5b502f6 100644 +--- a/hw/rdma/vmw/pvrdma_dev_ring.c ++++ b/hw/rdma/vmw/pvrdma_dev_ring.c +@@ -73,23 +73,16 @@ out: + + void *pvrdma_ring_next_elem_read(PvrdmaRing *ring) + { ++ int e; + unsigned int idx = 0, offset; + +- /* +- pr_dbg("%s: t=%d, h=%d\n", ring->name, ring->ring_state->prod_tail, +- ring->ring_state->cons_head); +- */ +- +- if (!pvrdma_idx_ring_has_data(ring->ring_state, ring->max_elems, &idx)) { ++ e = pvrdma_idx_ring_has_data(ring->ring_state, ring->max_elems, &idx); ++ if (e <= 0) { + pr_dbg("No more data in ring\n"); + return NULL; + } + + offset = idx * ring->elem_sz; +- /* +- pr_dbg("idx=%d\n", idx); +- pr_dbg("offset=%d\n", offset); +- */ + return ring->pages[offset / TARGET_PAGE_SIZE] + (offset % TARGET_PAGE_SIZE); + } + +@@ -105,20 +98,20 @@ void pvrdma_ring_read_inc(PvrdmaRing *ring) + + void *pvrdma_ring_next_elem_write(PvrdmaRing *ring) + { +- unsigned int idx, offset, tail; ++ int idx; ++ unsigned int offset, tail; + +- /* +- pr_dbg("%s: t=%d, h=%d\n", ring->name, ring->ring_state->prod_tail, +- ring->ring_state->cons_head); +- */ +- +- if (!pvrdma_idx_ring_has_space(ring->ring_state, ring->max_elems, &tail)) { ++ idx = pvrdma_idx_ring_has_space(ring->ring_state, ring->max_elems, &tail); ++ if (idx <= 0) { + pr_dbg("CQ is full\n"); + return NULL; + } + + idx = pvrdma_idx(&ring->ring_state->prod_tail, ring->max_elems); +- /* TODO: tail == idx */ ++ if (idx < 0 || tail != idx) { ++ pr_dbg("invalid idx\n"); ++ return NULL; ++ } + + offset = idx * ring->elem_sz; + return ring->pages[offset / TARGET_PAGE_SIZE] + (offset % TARGET_PAGE_SIZE); +-- +2.20.1 + |