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* [PATCH] http: fix memory leak in fetch_and_setup_pack_index()
@ 2026-05-19 14:54 LorenzoPegorari
  2026-05-19 19:17 ` Jeff King
  2026-05-28 23:49 ` [PATCH v2] " LorenzoPegorari
  0 siblings, 2 replies; 13+ messages in thread
From: LorenzoPegorari @ 2026-05-19 14:54 UTC (permalink / raw)
  To: git; +Cc: Taylor Blau, Junio C Hamano, Patrick Steinhardt, fox, Jeff King

Inside the function `fetch_and_setup_pack_index()`, when the pack
obtained using `fetch_pack_index()` fails to be verified by
`parse_pack_index()`, the function returns without closing and freeing
said pack.

Fix this by calling `close_pack_index()` to munmap the index file for
the leaking pack (which might have been mmapped by `fetch_pack_index()`
or `verify_pack_index()`), and then free it.

Signed-off-by: LorenzoPegorari <lorenzo.pegorari2002@gmail.com>
---
 http.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/http.c b/http.c
index 67c9c6fc60..c28be26ad9 100644
--- a/http.c
+++ b/http.c
@@ -2545,11 +2545,13 @@ static int fetch_and_setup_pack_index(struct packfile_list *packs,
 	}
 
 	ret = verify_pack_index(new_pack);
-	if (!ret)
-		close_pack_index(new_pack);
+
+	close_pack_index(new_pack);
 	free(tmp_idx);
-	if (ret)
+	if (ret) {
+		free(new_pack);
 		return -1;
+	}
 
 	packfile_list_prepend(packs, new_pack);
 	return 0;
-- 
2.54.0.dirty


^ permalink raw reply related	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2026-06-02  6:24 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-05-19 14:54 [PATCH] http: fix memory leak in fetch_and_setup_pack_index() LorenzoPegorari
2026-05-19 19:17 ` Jeff King
2026-05-28  1:22   ` Lorenzo Pegorari
2026-05-29  5:32     ` Jeff King
2026-05-28 23:49 ` [PATCH v2] " LorenzoPegorari
2026-05-29  5:36   ` Jeff King
2026-05-29  5:40     ` Jeff King
2026-06-01 13:34       ` Lorenzo Pegorari
2026-06-01 13:27     ` Lorenzo Pegorari
2026-06-01 13:51   ` [PATCH v3 0/2] " LorenzoPegorari
2026-06-01 13:52     ` [PATCH v3 1/2] http: cleanup function fetch_and_setup_pack_index() LorenzoPegorari
2026-06-01 13:52     ` [PATCH v3 2/2] http: fix memory leak in fetch_and_setup_pack_index() LorenzoPegorari
2026-06-02  6:24     ` [PATCH v3 0/2] " Jeff King

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