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[Qemu-devel] [PATCH] linux-user: Fix array bounds in errno conversion
From: |
riku . voipio |
Subject: |
[Qemu-devel] [PATCH] linux-user: Fix array bounds in errno conversion |
Date: |
Mon, 12 Oct 2015 16:42:51 +0300 |
From: Riku Voipio <address@hidden>
Check array bounds in host_to_target_errno() and target_to_host_errno().
Originally from Timothy Edward Baldwin, checks improved by Riku
Cc: Timothy Edward Baldwin <address@hidden>
Signed-off-by: Riku Voipio <address@hidden>
---
linux-user/syscall.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 06a59b4..100a111 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -614,17 +614,19 @@ static uint16_t
host_to_target_errno_table[ERRNO_TABLE_SIZE] = {
#endif
};
-static inline int host_to_target_errno(int err)
+static inline unsigned int host_to_target_errno(unsigned int err)
{
- if(host_to_target_errno_table[err])
+ if(err < ERRNO_TABLE_SIZE && host_to_target_errno_table[err]) {
return host_to_target_errno_table[err];
+ }
return err;
}
-static inline int target_to_host_errno(int err)
+static inline unsigned int target_to_host_errno(unsigned int err)
{
- if (target_to_host_errno_table[err])
+ if (err < ERRNO_TABLE_SIZE && target_to_host_errno_table[err]) {
return target_to_host_errno_table[err];
+ }
return err;
}
--
2.6.1
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