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author | delphij <delphij@FreeBSD.org> | 2015-05-21 19:05:47 +0000 |
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committer | delphij <delphij@FreeBSD.org> | 2015-05-21 19:05:47 +0000 |
commit | 51f0c42396fa0db8a54387238ba3b4db7721d481 (patch) | |
tree | 3cc632468e077258004657e037d1879b33097266 | |
parent | f14ca7e990e6d5c28f5f21d1b2ab19979227cbc9 (diff) | |
download | FreeBSD-src-51f0c42396fa0db8a54387238ba3b4db7721d481.zip FreeBSD-src-51f0c42396fa0db8a54387238ba3b4db7721d481.tar.gz |
MFC r282932: MFV r282927,r282928,r282930 (kientzle):
Don't segfault when reading malformed cpio archives.
-rw-r--r-- | contrib/libarchive/libarchive/archive_read.c | 2 | ||||
-rw-r--r-- | contrib/libarchive/libarchive/archive_read_support_format_cpio.c | 22 |
2 files changed, 16 insertions, 8 deletions
diff --git a/contrib/libarchive/libarchive/archive_read.c b/contrib/libarchive/libarchive/archive_read.c index c7f4da1..9513729 100644 --- a/contrib/libarchive/libarchive/archive_read.c +++ b/contrib/libarchive/libarchive/archive_read.c @@ -1395,6 +1395,8 @@ __archive_read_filter_consume(struct archive_read_filter * filter, { int64_t skipped; + if (request < 0) + return ARCHIVE_FATAL; if (request == 0) return 0; diff --git a/contrib/libarchive/libarchive/archive_read_support_format_cpio.c b/contrib/libarchive/libarchive/archive_read_support_format_cpio.c index d9c77e4..8038af8 100644 --- a/contrib/libarchive/libarchive/archive_read_support_format_cpio.c +++ b/contrib/libarchive/libarchive/archive_read_support_format_cpio.c @@ -198,7 +198,7 @@ static int archive_read_format_cpio_read_data(struct archive_read *, static int archive_read_format_cpio_read_header(struct archive_read *, struct archive_entry *); static int archive_read_format_cpio_skip(struct archive_read *); -static int be4(const unsigned char *); +static int64_t be4(const unsigned char *); static int find_odc_header(struct archive_read *); static int find_newc_header(struct archive_read *); static int header_bin_be(struct archive_read *, struct cpio *, @@ -213,7 +213,7 @@ static int header_afiol(struct archive_read *, struct cpio *, struct archive_entry *, size_t *, size_t *); static int is_octal(const char *, size_t); static int is_hex(const char *, size_t); -static int le4(const unsigned char *); +static int64_t le4(const unsigned char *); static int record_hardlink(struct archive_read *a, struct cpio *cpio, struct archive_entry *entry); @@ -864,8 +864,11 @@ header_bin_le(struct archive_read *a, struct cpio *cpio, /* Read fixed-size portion of header. */ h = __archive_read_ahead(a, bin_header_size, NULL); - if (h == NULL) + if (h == NULL) { + archive_set_error(&a->archive, 0, + "End of file trying to read next cpio header"); return (ARCHIVE_FATAL); + } /* Parse out binary fields. */ header = (const unsigned char *)h; @@ -900,8 +903,11 @@ header_bin_be(struct archive_read *a, struct cpio *cpio, /* Read fixed-size portion of header. */ h = __archive_read_ahead(a, bin_header_size, NULL); - if (h == NULL) + if (h == NULL) { + archive_set_error(&a->archive, 0, + "End of file trying to read next cpio header"); return (ARCHIVE_FATAL); + } /* Parse out binary fields. */ header = (const unsigned char *)h; @@ -944,17 +950,17 @@ archive_read_format_cpio_cleanup(struct archive_read *a) return (ARCHIVE_OK); } -static int +static int64_t le4(const unsigned char *p) { - return ((p[0]<<16) + (p[1]<<24) + (p[2]<<0) + (p[3]<<8)); + return ((p[0] << 16) + (((int64_t)p[1]) << 24) + (p[2] << 0) + (p[3] << 8)); } -static int +static int64_t be4(const unsigned char *p) { - return ((p[0]<<24) + (p[1]<<16) + (p[2]<<8) + (p[3])); + return ((((int64_t)p[0]) << 24) + (p[1] << 16) + (p[2] << 8) + (p[3])); } /* |