Message ID | 20191012212703.12989-7-martin.wilck@suse.com (mailing list archive) |
---|---|
State | Not Applicable, archived |
Delegated to: | christophe varoqui |
Headers | show
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Series |
multipath-tools: cleanup and warning enablement
|
expand
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diff --git a/libmultipath/alias.c b/libmultipath/alias.c index 0fb206d1..a96ba5cc 100644 --- a/libmultipath/alias.c +++ b/libmultipath/alias.c @@ -77,6 +77,7 @@ scan_devname(const char *alias, const char *prefix) { const char *c; int i, n = 0; + static const int last_26 = INT_MAX / 26; if (!prefix || strncmp(alias, prefix, strlen(prefix))) return -1; @@ -93,9 +94,9 @@ scan_devname(const char *alias, const char *prefix) if (*c < 'a' || *c > 'z') return -1; i = *c - 'a'; - n = ( n * 26 ) + i; - if (n < 0) + if (n > last_26 || (n == last_26 && i >= INT_MAX % 26)) return -1; + n = n * 26 + i; c++; n++; }