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journal: properly read unaligned le64 integers

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Fixes: #13051

Replaces: #13064
This commit is contained in:
Lennart Poettering 2019-07-16 15:22:26 +02:00
parent 49aca3b152
commit 4094c4bfb7
1 changed files with 4 additions and 3 deletions
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7
src/journal/compress.c
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@ -26,6 +26,7 @@
#include "sparse-endian.h"
#include "string-table.h"
#include "string-util.h"
#include "unaligned.h"
#include "util.h"
#if HAVE_LZ4
@ -101,7 +102,7 @@ int compress_blob_lz4(const void *src, uint64_t src_size,
if (r <= 0)
return -ENOBUFS;
*(le64_t*) dst = htole64(src_size);
unaligned_write_le64(dst, src_size);
*dst_size = r + 8;
return 0;
@ -187,8 +188,8 @@ int decompress_blob_lz4(const void *src, uint64_t src_size,
if (src_size <= 8)
return -EBADMSG;
size = le64toh( *(le64_t*)src );
if (size < 0 || (unsigned) size != le64toh(*(le64_t*)src))
size = unaligned_read_le64(src);
if (size < 0 || (unsigned) size != unaligned_read_le64(src))
return -EFBIG;
if ((size_t) size > *dst_alloc_size) {
out = realloc(*dst, size);