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Fix possible sshd crash when sshd_config set MaxStartups to a

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value <10 using the single-argument form of MaxStartups (e.g.
MaxStartups=3). This doesn't affect the three-argument form
of the directive (e.g. MaxStartups 3:20:5).

Patch from Peter Kaestle via bz3941
This commit is contained in:
djm
2026-04-02 07:38:14 +00:00
parent ac4a125d9e
commit e58fa79f4b
1 changed files with 3 additions and 3 deletions
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6
usr.bin/ssh/servconf.c
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@@ -1,4 +1,4 @@
/* $OpenBSD: servconf.c,v 1.445 2026/02/17 21:45:07 djm Exp $ */
/* $OpenBSD: servconf.c,v 1.446 2026/04/02 07:38:14 djm Exp $ */
/*
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
@@ -1946,12 +1946,12 @@ process_server_config_line_depth(ServerOptions *options, char *line,
filename, linenum, keyword);
} else if (n == 1) {
value3 = value;
value = value2 = -1;
value2 = -1;
} else {
fatal("%s line %d: Invalid %s spec.",
filename, linenum, keyword);
}
if (value3 <= 0 || (value2 != -1 && value <= 0))
if (value <= 0 || value3 <= 0)
fatal("%s line %d: Invalid %s spec.",
filename, linenum, keyword);
if (*activep && options->max_startups == -1) {