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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2022-09-05 11:55:55 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2022-09-12 12:05:02 +0200 |
| commit | 2f912c05dbebabb0446cf54e605d5d0f1bdc512c (patch) | |
| tree | 4a183b47804112e5a758f2146947005f8bac5f8a /lib | |
| parent | 20e241c70b7ad92c7b7a65d82157c0d10684745f (diff) | |
| download | barebox-2f912c05dbebabb0446cf54e605d5d0f1bdc512c.tar.gz barebox-2f912c05dbebabb0446cf54e605d5d0f1bdc512c.tar.xz | |
lib: parse_area_spec: guard against NULL pointer dereference
If mem_parse_options is called with an optstr containing x, but with
swab == NULL, we will end up doing a NULL pointer dereference. Add a
check that avoids this from happening.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20220905095557.596891-31-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/misc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/misc.c b/lib/misc.c index 532f0bfc1e..2d5f7c1985 100644 --- a/lib/misc.c +++ b/lib/misc.c @@ -159,6 +159,8 @@ int mem_parse_options(int argc, char *argv[], char *optstr, int *mode, *destfile = optarg; break; case 'x': + if (!swab) + return -EINVAL; *swab = 1; break; default: |