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upstream: Fix potential 1-byte array overrun

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in the case where read() returns exactly 100 bytes.  Flagged by Coverity
CID 901296, ok djm@

OpenBSD-Commit-ID: 66a96b08166e63dcbeed00297c33f09c4f22c1f7
This commit is contained in:
dtucker@openbsd.org authored and Darren Tucker committed 2026-03-11 21:07:48 +11:00
1 parent 70a4126283
commit 24168275e6
1 file changed
+2 -2
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ssh-sk-client.c
+2 -2
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@@ -1,4 +1,4 @@
/* $OpenBSD: ssh-sk-client.c,v 1.16 2026/03/10 03:45:01 deraadt Exp $ */
/* $OpenBSD: ssh-sk-client.c,v 1.17 2026/03/11 09:04:17 dtucker Exp $ */
/*
* Copyright (c) 2019 Google LLC
*
@@ -113,7 +113,7 @@ start_helper(int *fdp, pid_t *pidp, void (**osigchldp)(int))
n = read(execpipe[0], execbuf, sizeof execbuf);
close(execpipe[0]);
if (n > 0) {
execbuf[n] = '\0';
execbuf[n - 1] = '\0';
error_f("%s", execbuf);
return SSH_ERR_AGENT_FAILURE;
}