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Merge pull request #6846 from keszybz/fix-udev_event_apply_format

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Fix udev_event_apply_format()
This commit is contained in:
Lennart Poettering 2017-09-17 12:04:21 +02:00 committed by GitHub
parent 27cb01b0f0 61ceaea5c8
commit 88ab4a68cc
3 changed files with 6 additions and 5 deletions
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7
src/udev/udev-event.c
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@ -362,7 +362,7 @@ size_t udev_event_apply_format(struct udev_event *event,
}
copy:
/* copy char */
if (l == 0)
if (l < 2) /* need space for this char and the terminating NUL */
goto out;
s[0] = from[0];
from++;
@ -377,12 +377,12 @@ subst:
unsigned int i;
from++;
for (i = 0; from[i] != '}'; i++) {
for (i = 0; from[i] != '}'; i++)
if (from[i] == '\0') {
log_error("missing closing brace for format '%s'", src);
goto out;
}
}
if (i >= sizeof(attrbuf))
goto out;
memcpy(attrbuf, from, i);
@ -407,6 +407,7 @@ subst:
}
out:
assert(l >= 1);
s[0] = '\0';
return l;
}