* [PATCH v2] Prevent reading uninitialized memory with socket filters
@ 2010-11-09 23:53 Dan Rosenberg
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From: Dan Rosenberg @ 2010-11-09 23:53 UTC (permalink / raw)
To: netdev; +Cc: security, stable
As requested, avoiding the memset.
Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
diff -urp a/net/core/filter.c b/net/core/filter.c
--- a/net/core/filter.c 2010-11-08 22:10:26.820703471 -0500
+++ b/net/core/filter.c 2010-11-09 18:49:33.857201963 -0500
@@ -116,7 +116,7 @@ unsigned int sk_run_filter(struct sk_buf
void *ptr;
u32 A = 0; /* Accumulator */
u32 X = 0; /* Index Register */
- u32 mem[BPF_MEMWORDS]; /* Scratch Memory Store */
+ u32 mem[BPF_MEMWORDS] = {}; /* Scratch Memory Store */
u32 tmp;
int k;
int pc;
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2010-11-09 23:53 [PATCH v2] Prevent reading uninitialized memory with socket filters Dan Rosenberg
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