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| author | Phillip Lougher <phillip@lougher.demon.co.uk> | 2009-12-14 21:45:19 +0000 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-12-15 14:04:19 -0800 |
| commit | d4529862cae4de19fda8d4bbcbddc60f3e48a4cf (patch) | |
| tree | 40a4dab06fed9c98779adc2201800eaa942263f3 | |
| parent | c1e7c3ae59b065bf7ff24a05cb609b2f9e314db6 (diff) | |
| download | lwn-d4529862cae4de19fda8d4bbcbddc60f3e48a4cf.tar.gz lwn-d4529862cae4de19fda8d4bbcbddc60f3e48a4cf.zip | |
bzip2: Add missing checks for malloc returning NULL
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
LKML-Reference: <4b26b1ef.ln20bM9Mn4gzB21L%phillip@lougher.demon.co.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| -rw-r--r-- | lib/decompress_bunzip2.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/lib/decompress_bunzip2.c b/lib/decompress_bunzip2.c index 76074209f9a2..a4e971dee102 100644 --- a/lib/decompress_bunzip2.c +++ b/lib/decompress_bunzip2.c @@ -637,6 +637,8 @@ static int INIT start_bunzip(struct bunzip_data **bdp, void *inbuf, int len, /* Allocate bunzip_data. Most fields initialize to zero. */ bd = *bdp = malloc(i); + if (!bd) + return RETVAL_OUT_OF_MEMORY; memset(bd, 0, sizeof(struct bunzip_data)); /* Setup input buffer */ bd->inbuf = inbuf; @@ -664,6 +666,8 @@ static int INIT start_bunzip(struct bunzip_data **bdp, void *inbuf, int len, bd->dbufSize = 100000*(i-BZh0); bd->dbuf = large_malloc(bd->dbufSize * sizeof(int)); + if (!bd->dbuf) + return RETVAL_OUT_OF_MEMORY; return RETVAL_OK; } @@ -686,7 +690,7 @@ STATIC int INIT bunzip2(unsigned char *buf, int len, if (!outbuf) { error("Could not allocate output bufer"); - return -1; + return RETVAL_OUT_OF_MEMORY; } if (buf) inbuf = buf; @@ -694,6 +698,7 @@ STATIC int INIT bunzip2(unsigned char *buf, int len, inbuf = malloc(BZIP2_IOBUF_SIZE); if (!inbuf) { error("Could not allocate input bufer"); + i = RETVAL_OUT_OF_MEMORY; goto exit_0; } i = start_bunzip(&bd, inbuf, len, fill); @@ -720,11 +725,14 @@ STATIC int INIT bunzip2(unsigned char *buf, int len, } else if (i == RETVAL_UNEXPECTED_OUTPUT_EOF) { error("Compressed file ends unexpectedly"); } + if (!bd) + goto exit_1; if (bd->dbuf) large_free(bd->dbuf); if (pos) *pos = bd->inbufPos; free(bd); +exit_1: if (!buf) free(inbuf); exit_0: |