From: Damien Robert <damien.olivier.robert@gmail.com>
To: git@vger.kernel.org
Cc: Damien Robert <damien.olivier.robert+git@gmail.com>,
Junio C Hamano <gitster@pobox.com>,
Derrick Stolee <dstolee@microsoft.com>,
William Baker <William.Baker@microsoft.com>
Subject: [PATCH 1/1] midx.c: fix an integer overflow
Date: Fri, 28 Feb 2020 17:24:49 +0100 [thread overview]
Message-ID: <20200228162450.1720795-1-damien.olivier.robert+git@gmail.com> (raw)
When verifying a midx index with 0 objects, the
m->num_objects - 1
overflows to 4294967295.
Fix this.
Signed-off-by: Damien Robert <damien.olivier.robert+git@gmail.com>
---
midx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/midx.c b/midx.c
index 37ec28623a..6ffe013089 100644
--- a/midx.c
+++ b/midx.c
@@ -1127,7 +1127,7 @@ int verify_midx_file(struct repository *r, const char *object_dir, unsigned flag
if (flags & MIDX_PROGRESS)
progress = start_sparse_progress(_("Verifying OID order in multi-pack-index"),
m->num_objects - 1);
- for (i = 0; i < m->num_objects - 1; i++) {
+ for (i = 0; i + 1 < m->num_objects; i++) {
struct object_id oid1, oid2;
nth_midxed_object_oid(&oid1, m, i);
--
Patched on top of v2.25.1-379-gd22418c625 (git version 2.25.1)
next reply other threads:[~2020-02-28 16:25 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-28 16:24 Damien Robert [this message]
2020-02-28 18:55 ` [PATCH 1/1] midx.c: fix an integer overflow Jeff King
2020-02-28 20:39 ` Junio C Hamano
2020-02-29 17:15 ` Damien Robert
2020-02-29 15:38 ` Damien Robert
2020-03-12 17:35 ` [PATCH v2 " Damien Robert
2020-03-12 18:24 ` Damien Robert
2020-03-12 18:28 ` Derrick Stolee
2020-03-12 21:41 ` Damien Robert
2020-03-23 22:25 ` [PATCH v3 " Damien Robert
2020-03-24 6:01 ` Jeff King
2020-03-24 18:48 ` Junio C Hamano
2020-03-26 21:35 ` [PATCH v4 " Damien Robert
2020-03-26 23:27 ` Junio C Hamano
2020-03-28 22:23 ` Damien Robert
2020-03-28 23:51 ` Junio C Hamano
2020-03-28 22:18 ` [PATCH 1/1] midx.c: fix an integer underflow Damien Robert
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