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SUSE:SLE-12-SP5:Update
sudo.27028
sudo-observe-SIGCHLD.patch
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File sudo-observe-SIGCHLD.patch of Package sudo.27028
From 727056e0c9519d8eecde801e950b35f2f69c72e2 Mon Sep 17 00:00:00 2001 From: "Todd C. Miller" <Todd.Miller@sudo.ws> Date: Fri, 23 Apr 2021 07:41:27 -0600 Subject: [PATCH] Make sure SIGCHLD is not ignored when sudo is executed. If SIGCHLD is ignored there is a race condition between when the process is executed and when the SIGCHLD handler is installed. This fixes the bug described by GitHub PR #98 Edited by jsikes@suse.com for sudo-1.8.10p3 --- src/signal.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/src/signal.c b/src/signal.c index 7f90d707b..866b64790 100644 --- a/src/signal.c +++ b/src/signal.c @@ -132,13 +132,17 @@ init_signals(void) for (ss = saved_signals; ss->signo > 0; ss++) { switch (ss->signo) { - case SIGCHLD: case SIGCONT: case SIGPIPE: case SIGTTIN: case SIGTTOU: /* Don't install these until exec time. */ break; + case SIGCHLD: + /* Sudo needs to be able to catch SIGCHLD. */ + if (ss->sa.sa_handler != SIG_IGN) + sigaction(SIGCHLD, &sa, NULL); + break; default: if (ss->sa.sa_handler != SIG_IGN) sigaction(ss->signo, &sa, NULL);
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