diff --git a/SOURCES/bash-4.4-patch-20.patch b/SOURCES/bash-4.4-patch-20.patch
new file mode 100644
index 0000000..5475e3c
--- /dev/null
+++ b/SOURCES/bash-4.4-patch-20.patch
@@ -0,0 +1,136 @@
+From 354efb96f1e4574f458e994163bbe31c76769573 Mon Sep 17 00:00:00 2001
+From: Chet Ramey <chet.ramey@case.edu>
+Date: Fri, 1 Jun 2018 10:19:56 -0400
+Subject: [PATCH] saved background process status hash table loop fixes
+
+---
+ jobs.c | 62 +++++++++++++++++++++++++++++++++++++++++-----------
+ patchlevel.h | 2 +-
+ 2 files changed, 50 insertions(+), 14 deletions(-)
+
+diff --git a/jobs.c b/jobs.c
+index fc966036..2684632d 100644
+--- a/jobs.c
++++ b/jobs.c
+@@ -812,8 +812,22 @@ bgp_add (pid, status)
+ ps_index_t *bucket, psi;
+ struct pidstat *ps;
+
+- bucket = pshash_getbucket (pid);
+- psi = bgp_getindex ();
++ /* bucket == existing chain of pids hashing to same value
++ psi = where were going to put this pid/status */
++
++ bucket = pshash_getbucket (pid); /* index into pidstat_table */
++ psi = bgp_getindex (); /* bgpids.head, index into storage */
++
++ /* XXX - what if psi == *bucket? */
++ if (psi == *bucket)
++ {
++#ifdef DEBUG
++ internal_warning ("hashed pid %d (pid %d) collides with bgpids.head, skipping", psi, pid);
++#endif
++ bgpids.storage[psi].pid = NO_PID; /* make sure */
++ psi = bgp_getindex (); /* skip to next one */
++ }
++
+ ps = &bgpids.storage[psi];
+
+ ps->pid = pid;
+@@ -841,32 +855,47 @@ pshash_delindex (psi)
+ ps_index_t psi;
+ {
+ struct pidstat *ps;
++ ps_index_t *bucket;
+
+ ps = &bgpids.storage[psi];
+ if (ps->pid == NO_PID)
+ return;
+
+- if (ps->bucket_next != NO_PID)
++ if (ps->bucket_next != NO_PIDSTAT)
+ bgpids.storage[ps->bucket_next].bucket_prev = ps->bucket_prev;
+- if (ps->bucket_prev != NO_PID)
++ if (ps->bucket_prev != NO_PIDSTAT)
+ bgpids.storage[ps->bucket_prev].bucket_next = ps->bucket_next;
+ else
+- *(pshash_getbucket (ps->pid)) = ps->bucket_next;
++ {
++ bucket = pshash_getbucket (ps->pid);
++ *bucket = ps->bucket_next; /* deleting chain head in hash table */
++ }
++
++ /* clear out this cell, just in case */
++ ps->pid = NO_PID;
++ ps->bucket_next = ps->bucket_prev = NO_PIDSTAT;
+ }
+
+ static int
+ bgp_delete (pid)
+ pid_t pid;
+ {
+- ps_index_t psi;
++ ps_index_t psi, orig_psi;
+
+ if (bgpids.storage == 0 || bgpids.nalloc == 0 || bgpids.npid == 0)
+ return 0;
+
+ /* Search chain using hash to find bucket in pidstat_table */
+- for (psi = *(pshash_getbucket (pid)); psi != NO_PIDSTAT; psi = bgpids.storage[psi].bucket_next)
+- if (bgpids.storage[psi].pid == pid)
+- break;
++ for (orig_psi = psi = *(pshash_getbucket (pid)); psi != NO_PIDSTAT; psi = bgpids.storage[psi].bucket_next)
++ {
++ if (bgpids.storage[psi].pid == pid)
++ break;
++ if (orig_psi == bgpids.storage[psi].bucket_next) /* catch reported bug */
++ {
++ internal_warning ("bgp_delete: LOOP: psi (%d) == storage[psi].bucket_next", psi);
++ return 0;
++ }
++ }
+
+ if (psi == NO_PIDSTAT)
+ return 0; /* not found */
+@@ -904,15 +933,22 @@ static int
+ bgp_search (pid)
+ pid_t pid;
+ {
+- ps_index_t psi;
++ ps_index_t psi, orig_psi;
+
+ if (bgpids.storage == 0 || bgpids.nalloc == 0 || bgpids.npid == 0)
+ return -1;
+
+ /* Search chain using hash to find bucket in pidstat_table */
+- for (psi = *(pshash_getbucket (pid)); psi != NO_PIDSTAT; psi = bgpids.storage[psi].bucket_next)
+- if (bgpids.storage[psi].pid == pid)
+- return (bgpids.storage[psi].status);
++ for (orig_psi = psi = *(pshash_getbucket (pid)); psi != NO_PIDSTAT; psi = bgpids.storage[psi].bucket_next)
++ {
++ if (bgpids.storage[psi].pid == pid)
++ return (bgpids.storage[psi].status);
++ if (orig_psi == bgpids.storage[psi].bucket_next) /* catch reported bug */
++ {
++ internal_warning ("bgp_search: LOOP: psi (%d) == storage[psi].bucket_next", psi);
++ return -1;
++ }
++ }
+
+ return -1;
+ }
+diff --git a/patchlevel.h b/patchlevel.h
+index a711c495..4a65dc0f 100644
+--- a/patchlevel.h
++++ b/patchlevel.h
+@@ -25,6 +25,6 @@
+ regexp `^#define[ ]*PATCHLEVEL', since that's what support/mkversion.sh
+ looks for to find the patch level (for the sccs version string). */
+
+-#define PATCHLEVEL 19
++#define PATCHLEVEL 20
+
+ #endif /* _PATCHLEVEL_H_ */
+--
+2.29.2
+
diff --git a/SPECS/bash.spec b/SPECS/bash.spec
index 5f7e672..5fe6a89 100644
--- a/SPECS/bash.spec
+++ b/SPECS/bash.spec
@@ -1,13 +1,13 @@
#% define beta_tag rc2
%global _hardened_build 1
-%define patchleveltag .19
+%define patchleveltag .20
%define baseversion 4.4
%bcond_without tests
Version: %{baseversion}%{patchleveltag}
Name: bash
Summary: The GNU Bourne Again shell
-Release: 14%{?dist}
+Release: 1%{?dist}
License: GPLv3+
Url: https://www.gnu.org/software/bash
Source0: https://ftp.gnu.org/gnu/bash/bash-%{baseversion}.tar.gz
@@ -21,7 +21,7 @@ Source3: dot-bash_logout
# Official upstream patches
# Patches are converted to apply with '-p1'
-%{lua:for i=1,19 do print(string.format("Patch%u: bash-4.4-patch-%u.patch\n", i, i)) end}
+%{lua:for i=1,20 do print(string.format("Patch%u: bash-4.4-patch-%u.patch\n", i, i)) end}
# Other patches
Patch101: bash-2.02-security.patch
@@ -335,6 +335,10 @@ end
%{_libdir}/pkgconfig/%{name}.pc
%changelog
+* Fri Mar 26 2021 Siteshwar Vashisht <svashisht@redhat.com> - 4.4.20-1
+- Fix infinite loop in long running scripts
+ Resolves: #1943495
+
* Wed Nov 04 2020 Siteshwar Vashisht <svashisht@redhat.com> - 4.4.19-14
- Fix hang when limit for nproc is very high
Resolves: #1890888