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| author | Jan Beulich via SeaBIOS <seabios@seabios.org> | 2022-01-24 10:20:53 +0100 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2022-01-27 11:32:47 -0500 |
| commit | dc776a2d9ca9e1b857e880ff682668871369b4c3 (patch) | |
| tree | ac25755bdcb457619d7d60b43d2d71350c8e8202 | |
| parent | 15a102e062af18e01daece409ee54765a3b4ec13 (diff) | |
| download | qemu-seabios-dc776a2d9ca9e1b857e880ff682668871369b4c3.tar.gz | |
nvme: avoid use-after-free in nvme_controller_enable()
Commit b68f313c9139 ("nvme: Record maximum allowed request size")
introduced a use of "identify" past it being passed to free(). Latch the
value of interest into a local variable.
Reported-by: Coverity (ID 1497613)
Signed-off-by: Jan Beulich <jbeulich@suse.com>
| -rw-r--r-- | src/hw/nvme.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/hw/nvme.c b/src/hw/nvme.c index 3dfa0ce..b3835c0 100644 --- a/src/hw/nvme.c +++ b/src/hw/nvme.c @@ -637,6 +637,7 @@ nvme_controller_enable(struct nvme_ctrl *ctrl) identify->nn, (identify->nn == 1) ? "" : "s"); ctrl->ns_count = identify->nn; + u8 mdts = identify->mdts; free(identify); if ((ctrl->ns_count == 0) || nvme_create_io_queues(ctrl)) { @@ -648,7 +649,7 @@ nvme_controller_enable(struct nvme_ctrl *ctrl) /* Populate namespace IDs */ int ns_idx; for (ns_idx = 0; ns_idx < ctrl->ns_count; ns_idx++) { - nvme_probe_ns(ctrl, ns_idx, identify->mdts); + nvme_probe_ns(ctrl, ns_idx, mdts); } dprintf(3, "NVMe initialization complete!\n"); |