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Better bounds checking in the exit-signal handler.

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[originally from svn r4670]
This commit is contained in:
Simon Tatham 2004-10-22 16:50:51 +00:00
parent 5ff0e6b1d9
commit 64821979b1
1 changed files with 3 additions and 2 deletions
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5
ssh.c
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@ -6418,9 +6418,10 @@ static void do_ssh2_authconn(Ssh ssh, unsigned char *in, int inlen, int ispkt)
#define CHECK_HYPOTHESIS(offset, result) \ #define CHECK_HYPOTHESIS(offset, result) \
do { \ do { \
long q = offset; \ long q = offset; \
if (q+4 <= len) { \ if (q >= 0 && q+4 <= len) { \
q = q + 4 + GET_32BIT(p+q); \ q = q + 4 + GET_32BIT(p+q); \
if (q+4 <= len && (q = q + 4 + GET_32BIT(p+q)) && q == len) \ if (q >= 0 && q+4 <= len && \
(q = q + 4 + GET_32BIT(p+q)) && q == len) \
result = TRUE; \ result = TRUE; \
} \ } \
} while(0) } while(0)