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qemu
migration-ram-fix-use-after-free-of-loca.patch
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File migration-ram-fix-use-after-free-of-loca.patch of Package qemu
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Date: Tue, 24 Mar 2020 18:36:29 +0300 Subject: migration/ram: fix use after free of local_err Git-commit: b4a1733c5e6827c72b0dcfa295e07ef7b1ebccff local_err is used again in migration_bitmap_sync_precopy() after precopy_notify(), so we must zero it. Otherwise try to set non-NULL local_err will crash. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20200324153630.11882-6-vsementsov@virtuozzo.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Bruce Rogers <brogers@suse.com> --- migration/ram.c | 1 + 1 file changed, 1 insertion(+) diff --git a/migration/ram.c b/migration/ram.c index b6de7d1d5552a0aa39b0d232c2d6..c44542175da044c78ef8dc0ce612 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -1906,6 +1906,7 @@ static void migration_bitmap_sync_precopy(RAMState *rs) */ if (precopy_notify(PRECOPY_NOTIFY_BEFORE_BITMAP_SYNC, &local_err)) { error_report_err(local_err); + local_err = NULL; } migration_bitmap_sync(rs);
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