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-rw-r--r--linux-user/aarch64/signal.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/linux-user/aarch64/signal.c b/linux-user/aarch64/signal.c
index 8b352abb97..8fbe98d72f 100644
--- a/linux-user/aarch64/signal.c
+++ b/linux-user/aarch64/signal.c
@@ -318,10 +318,13 @@ static int target_restore_sigframe(CPUARMState *env,
             break;
 
         case TARGET_SVE_MAGIC:
+            if (sve || size < sizeof(struct target_sve_context)) {
+                goto err;
+            }
             if (cpu_isar_feature(aa64_sve, env_archcpu(env))) {
                 vq = sve_vq(env);
                 sve_size = QEMU_ALIGN_UP(TARGET_SVE_SIG_CONTEXT_SIZE(vq), 16);
-                if (!sve && size == sve_size) {
+                if (size == sve_size) {
                     sve = (struct target_sve_context *)ctx;
                     break;
                 }