[PATCH v4 01/11] reftable: fix OOB stack write in print functions

["Han-Wen Nienhuys via GitGitGadget" <gitgitgadget@xxxxxxxxx>]

From: Han-Wen Nienhuys <hanwen@xxxxxxxxxx>

Signed-off-by: Han-Wen Nienhuys <hanwen@xxxxxxxxxx>
---
 reftable/record.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/reftable/record.c b/reftable/record.c
index 6a5dac32dc6..8536bd03aa9 100644
--- a/reftable/record.c
+++ b/reftable/record.c
@@ -254,7 +254,7 @@ static void hex_format(char *dest, uint8_t *src, int hash_size)
 void reftable_ref_record_print(struct reftable_ref_record *ref,
 			       uint32_t hash_id)
 {
-	char hex[2 * GIT_SHA256_RAWSZ + 1] = { 0 }; /* BUG */
+	char hex[GIT_MAX_HEXSZ + 1] = { 0 }; /* BUG */
 	printf("ref{%s(%" PRIu64 ") ", ref->refname, ref->update_index);
 	switch (ref->value_type) {
 	case REFTABLE_REF_SYMREF:
@@ -586,7 +586,7 @@ static struct reftable_record_vtable reftable_obj_record_vtable = {
 void reftable_log_record_print(struct reftable_log_record *log,
 			       uint32_t hash_id)
 {
-	char hex[GIT_SHA256_RAWSZ + 1] = { 0 };
+	char hex[GIT_MAX_HEXSZ + 1] = { 0 };
 
 	switch (log->value_type) {
 	case REFTABLE_LOG_DELETION:
-- 
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