import pam-1.5.1-9.el9
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CentOS Sources
Stepan Oksanichenko
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d0e0242fab
commit
ef6d9144cf
99
SOURCES/pam-1.5.1-pam-limits-unlimited-value.patch
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99
SOURCES/pam-1.5.1-pam-limits-unlimited-value.patch
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@ -0,0 +1,99 @@
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From 3234488f2c52a021eec87df1990d256314c21bff Mon Sep 17 00:00:00 2001
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From: Josef Moellers <jmoellers@suse.de>
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Date: Wed, 14 Apr 2021 16:39:28 +0200
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Subject: [PATCH] pam_limits: "Unlimited" is not a valid value for
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RLIMIT_NOFILE.
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Replace it with a value obtained from /proc/sys/fs/nr_open
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* modules/pam_limits/limits.conf.5.xml: Document the replacement.
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* modules/pam_limits/pam_limits.c: Replace unlimited RLIMIT_NOFILE
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value with a value obtained from /proc/sys/fs/nr_open
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---
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modules/pam_limits/limits.conf.5.xml | 2 ++
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modules/pam_limits/pam_limits.c | 49 ++++++++++++++++++++++++++++
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2 files changed, 51 insertions(+)
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diff --git a/modules/pam_limits/limits.conf.5.xml b/modules/pam_limits/limits.conf.5.xml
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index cd64ac90..c5bd6768 100644
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--- a/modules/pam_limits/limits.conf.5.xml
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+++ b/modules/pam_limits/limits.conf.5.xml
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@@ -283,6 +283,8 @@
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<emphasis>unlimited</emphasis> or <emphasis>infinity</emphasis> indicating no limit,
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except for <emphasis remap='B'>priority</emphasis>, <emphasis remap='B'>nice</emphasis>,
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and <emphasis remap='B'>nonewprivs</emphasis>.
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+ If <emphasis remap='B'>nofile</emphasis> is to be set to one of these values,
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+ it will be set to the contents of /proc/sys/fs/nr_open instead (see setrlimit(3)).
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</para>
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<para>
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If a hard limit or soft limit of a resource is set to a valid value,
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diff --git a/modules/pam_limits/pam_limits.c b/modules/pam_limits/pam_limits.c
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index 10049973..7cc45d77 100644
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--- a/modules/pam_limits/pam_limits.c
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+++ b/modules/pam_limits/pam_limits.c
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@@ -487,6 +487,41 @@ static int init_limits(pam_handle_t *pamh, struct pam_limit_s *pl, int ctrl)
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return retval;
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}
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+/*
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+ * Read the contents of <pathname> and return it in *valuep
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+ * return 1 if conversion succeeds, result is in *valuep
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+ * return 0 if conversion fails, *valuep is untouched.
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+ */
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+static int
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+value_from_file(const char *pathname, rlim_t *valuep)
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+{
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+ char buf[128];
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+ FILE *fp;
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+ int retval;
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+
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+ retval = 0;
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+
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+ if ((fp = fopen(pathname, "r")) != NULL) {
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+ if (fgets(buf, sizeof(buf), fp) != NULL) {
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+ char *endptr;
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+ unsigned long long value;
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+
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+ errno = 0;
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+ value = strtoull(buf, &endptr, 10);
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+ if (endptr != buf &&
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+ (value != ULLONG_MAX || errno == 0) &&
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+ (unsigned long long) (rlim_t) value == value) {
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+ *valuep = (rlim_t) value;
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+ retval = 1;
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+ }
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+ }
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+
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+ fclose(fp);
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+ }
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+
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+ return retval;
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+}
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+
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static void
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process_limit (const pam_handle_t *pamh, int source, const char *lim_type,
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const char *lim_item, const char *lim_value,
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@@ -666,6 +701,20 @@ process_limit (const pam_handle_t *pamh, int source, const char *lim_type,
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rlimit_value = 20 - int_value;
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break;
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#endif
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+ case RLIMIT_NOFILE:
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+ /*
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+ * If nofile is to be set to "unlimited", try to set it to
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+ * the value in /proc/sys/fs/nr_open instead.
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+ */
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+ if (rlimit_value == RLIM_INFINITY) {
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+ if (!value_from_file("/proc/sys/fs/nr_open", &rlimit_value))
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+ pam_syslog(pamh, LOG_WARNING,
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+ "Cannot set \"nofile\" to a sensible value");
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+ else if (ctrl & PAM_DEBUG_ARG)
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+ pam_syslog(pamh, LOG_DEBUG, "Setting \"nofile\" limit to %llu",
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+ (unsigned long long) rlimit_value);
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+ }
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+ break;
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}
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if ( (limit_item != LIMIT_LOGIN)
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--
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2.33.1
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@ -3,7 +3,7 @@
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Summary: An extensible library which provides authentication for applications
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Name: pam
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Version: 1.5.1
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Release: 8%{?dist}
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Release: 9%{?dist}
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# The library is BSD licensed with option to relicense as GPLv2+
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# - this option is redundant as the BSD license allows that anyway.
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# pam_timestamp, pam_loginuid, and pam_console modules are GPLv2+.
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@ -30,6 +30,8 @@ Patch3: pam-1.3.0-unix-nomsg.patch
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Patch4: pam-1.5.1-timestamp-openssl-hmac-authentication.patch
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# https://github.com/linux-pam/linux-pam/commit/ec0e724fe53188c5c762c34ca9db6681c0de01b8
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Patch5: pam-1.5.1-pam_filter_close_file_after_controlling_tty.patch
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# https://github.com/linux-pam/linux-pam/commit/3234488f2c52a021eec87df1990d256314c21bff
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Patch6: pam-1.5.1-pam-limits-unlimited-value.patch
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%global _pamlibdir %{_libdir}
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%global _moduledir %{_libdir}/security
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@ -117,6 +119,7 @@ cp %{SOURCE18} .
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%patch3 -p1 -b .nomsg
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%patch4 -p1 -b .timestamp-openssl-hmac-authentication
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%patch5 -p1 -b .pam_filter_close_file_after_controlling_tty
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%patch6 -p1 -b .pam-limits-unlimited-value
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autoreconf -i
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@ -371,6 +374,9 @@ done
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%doc doc/sag/*.txt doc/sag/html
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%changelog
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* Thu Dec 2 2021 Iker Pedrosa <ipedrosa@redhat.com> - 1.5.1-9
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- pam_limits: "Unlimited" is not a valid value for RLIMIT_NOFILE. Resolves: #1989900
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* Mon Aug 09 2021 Mohan Boddu <mboddu@redhat.com> - 1.5.1-8
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- Rebuilt for IMA sigs, glibc 2.34, aarch64 flags
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Related: rhbz#1991688
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