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File _service:tar_scm_kernel_repo:backort-useradd-Fix-buffer-overflow-when-using-a-prefix.patch of Package shadow
From eaebea55a495a56317ed85e959b3599f73c6bdf2 Mon Sep 17 00:00:00 2001 From: David Michael <fedora.dm0@gmail.com> Date: Sun, 23 Oct 2022 18:51:33 -0400 Subject: [PATCH] useradd: Fix buffer overflow when using a prefix The buffer length did not count the string's trailing null byte. Signed-off-by: David Michael <fedora.dm0@gmail.com> Conflict: if(prefix[0]) There is no space after it. Reference: https://github.com/shadow-maint/shadow/commit/f6f8bcd2a57c06983296485cc028ebdf467ebfd7 --- src/useradd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/useradd.c b/src/useradd.c index 39a744ee0..7ea0a9c4d 100644 --- a/src/useradd.c +++ b/src/useradd.c @@ -2372,7 +2372,7 @@ static void create_mail (void) if (NULL == spool) { spool = "/var/mail"; } - file = alloca (strlen (prefix) + strlen (spool) + strlen (user_name) + 2); + file = alloca (strlen (prefix) + strlen (spool) + strlen (user_name) + 3); if(prefix[0]) sprintf (file, "%s/%s/%s", prefix, spool, user_name); else
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