diff options
Diffstat (limited to 'meta/recipes-devtools/opkg/opkg/0001-file_util.c-fix-possible-bad-memory-access-in-file_r.patch')
-rw-r--r-- | meta/recipes-devtools/opkg/opkg/0001-file_util.c-fix-possible-bad-memory-access-in-file_r.patch | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/meta/recipes-devtools/opkg/opkg/0001-file_util.c-fix-possible-bad-memory-access-in-file_r.patch b/meta/recipes-devtools/opkg/opkg/0001-file_util.c-fix-possible-bad-memory-access-in-file_r.patch new file mode 100644 index 0000000000..bec21e67f4 --- /dev/null +++ b/meta/recipes-devtools/opkg/opkg/0001-file_util.c-fix-possible-bad-memory-access-in-file_r.patch | |||
@@ -0,0 +1,50 @@ | |||
1 | From 8b45a3c4cab95382beea1ecdddeb2e4a9ed14aba Mon Sep 17 00:00:00 2001 | ||
2 | From: Jo-Philipp Wich <jo@mein.io> | ||
3 | Date: Wed, 1 Apr 2020 21:47:40 +0200 | ||
4 | Subject: [PATCH 001/104] file_util.c: fix possible bad memory access in | ||
5 | file_read_line_alloc() | ||
6 | |||
7 | In the case of a zero length string being returned by fgets(), the condition | ||
8 | checking for a trailing new line would perform a bad memory access outside | ||
9 | of `buf`. This might happen when line with a leading null byte is read. | ||
10 | |||
11 | Avoid this case by checking that the string has a length of at least one | ||
12 | byte. Also change the unsigned int types to size_t to store length values | ||
13 | while we're at it. | ||
14 | |||
15 | Upstream-Status: Backport [https://github.com/ndmsystems/opkg/commit/8b45a3c4cab95382beea1ecdddeb2e4a9ed14aba] | ||
16 | |||
17 | Signed-off-by: Jo-Philipp Wich <jo@mein.io> | ||
18 | Signed-off-by: Alejandro del Castillo <alejandro.delcastillo@ni.com> | ||
19 | Signed-off-by: virendra thakur <virendrak@kpit.com> | ||
20 | --- | ||
21 | libopkg/file_util.c | 7 ++----- | ||
22 | 1 file changed, 2 insertions(+), 5 deletions(-) | ||
23 | |||
24 | diff --git a/libopkg/file_util.c b/libopkg/file_util.c | ||
25 | index fbed7b4..ee9f59d 100644 | ||
26 | --- a/libopkg/file_util.c | ||
27 | +++ b/libopkg/file_util.c | ||
28 | @@ -127,17 +127,14 @@ char *file_readlink_alloc(const char *file_name) | ||
29 | */ | ||
30 | char *file_read_line_alloc(FILE * fp) | ||
31 | { | ||
32 | + size_t buf_len, line_size; | ||
33 | char buf[BUFSIZ]; | ||
34 | - unsigned int buf_len; | ||
35 | char *line = NULL; | ||
36 | - unsigned int line_size = 0; | ||
37 | int got_nl = 0; | ||
38 | |||
39 | - buf[0] = '\0'; | ||
40 | - | ||
41 | while (fgets(buf, BUFSIZ, fp)) { | ||
42 | buf_len = strlen(buf); | ||
43 | - if (buf[buf_len - 1] == '\n') { | ||
44 | + if (buf_len > 0 && buf[buf_len - 1] == '\n') { | ||
45 | buf_len--; | ||
46 | buf[buf_len] = '\0'; | ||
47 | got_nl = 1; | ||
48 | -- | ||
49 | 2.25.1 | ||
50 | |||