rpm/SOURCES/0001-Fix-resource-leaks-on-zstd-open-error-paths.patch
2021-09-10 03:58:36 +00:00

51 lines
1.5 KiB
Diff

From ed6c5573c09611ff9522ed290ef9d1ba717d8019 Mon Sep 17 00:00:00 2001
Message-Id: <ed6c5573c09611ff9522ed290ef9d1ba717d8019.1574331915.git.pmatilai@redhat.com>
From: Panu Matilainen <pmatilai@redhat.com>
Date: Thu, 21 Nov 2019 12:22:45 +0200
Subject: [PATCH] Fix resource leaks on zstd open error paths
If zstd stream initialization fails, the opened fd and the stream
itself are leaked. Handle error exit in a central label.
---
rpmio/rpmio.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/rpmio/rpmio.c b/rpmio/rpmio.c
index 243942411..10ba20cd6 100644
--- a/rpmio/rpmio.c
+++ b/rpmio/rpmio.c
@@ -1128,13 +1128,13 @@ static rpmzstd rpmzstdNew(int fdno, const char *fmode)
if ((flags & O_ACCMODE) == O_RDONLY) { /* decompressing */
if ((_stream = (void *) ZSTD_createDStream()) == NULL
|| ZSTD_isError(ZSTD_initDStream(_stream))) {
- return NULL;
+ goto err;
}
nb = ZSTD_DStreamInSize();
} else { /* compressing */
if ((_stream = (void *) ZSTD_createCStream()) == NULL
|| ZSTD_isError(ZSTD_initCStream(_stream, level))) {
- return NULL;
+ goto err;
}
nb = ZSTD_CStreamOutSize();
}
@@ -1149,6 +1149,14 @@ static rpmzstd rpmzstdNew(int fdno, const char *fmode)
zstd->b = xmalloc(nb);
return zstd;
+
+err:
+ fclose(fp);
+ if ((flags & O_ACCMODE) == O_RDONLY)
+ ZSTD_freeDStream(_stream);
+ else
+ ZSTD_freeCStream(_stream);
+ return NULL;
}
static FD_t zstdFdopen(FD_t fd, int fdno, const char * fmode)
--
2.23.0