diff options
| author | Phil Sutter <phil@nwl.cc> | 2024-03-07 14:49:08 +0100 |
|---|---|---|
| committer | Phil Sutter <phil@nwl.cc> | 2024-04-11 01:27:07 +0200 |
| commit | be0bae0ad31b0adb506f96de083f52a2bd0d4fbf (patch) | |
| tree | 378a1a3ffc541149493c184f0e3c21dfb675cebf /src/expr/exthdr.c | |
| parent | c48ac8cba8716a8bc4ff713ee965eee2643cfc31 (diff) | |
With attr_policy in place, data_len has an upper boundary but it may be
lower than the attribute's storage area in which case memcpy() would
read garbage.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Diffstat (limited to 'src/expr/exthdr.c')
| -rw-r--r-- | src/expr/exthdr.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/src/expr/exthdr.c b/src/expr/exthdr.c index 93b7521..453902c 100644 --- a/src/expr/exthdr.c +++ b/src/expr/exthdr.c @@ -46,25 +46,25 @@ nftnl_expr_exthdr_set(struct nftnl_expr *e, uint16_t type, switch(type) { case NFTNL_EXPR_EXTHDR_DREG: - memcpy(&exthdr->dreg, data, sizeof(exthdr->dreg)); + memcpy(&exthdr->dreg, data, data_len); break; case NFTNL_EXPR_EXTHDR_TYPE: - memcpy(&exthdr->type, data, sizeof(exthdr->type)); + memcpy(&exthdr->type, data, data_len); break; case NFTNL_EXPR_EXTHDR_OFFSET: - memcpy(&exthdr->offset, data, sizeof(exthdr->offset)); + memcpy(&exthdr->offset, data, data_len); break; case NFTNL_EXPR_EXTHDR_LEN: - memcpy(&exthdr->len, data, sizeof(exthdr->len)); + memcpy(&exthdr->len, data, data_len); break; case NFTNL_EXPR_EXTHDR_OP: - memcpy(&exthdr->op, data, sizeof(exthdr->op)); + memcpy(&exthdr->op, data, data_len); break; case NFTNL_EXPR_EXTHDR_FLAGS: - memcpy(&exthdr->flags, data, sizeof(exthdr->flags)); + memcpy(&exthdr->flags, data, data_len); break; case NFTNL_EXPR_EXTHDR_SREG: - memcpy(&exthdr->sreg, data, sizeof(exthdr->sreg)); + memcpy(&exthdr->sreg, data, data_len); break; } return 0; |