93 lines
2.9 KiB
Diff
93 lines
2.9 KiB
Diff
From ec6b95c3303c700eb89eebeda2d7264cc184a796 Mon Sep 17 00:00:00 2001
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From: Romain Geissler <romain.geissler@amadeus.com>
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Date: Mon, 25 Sep 2023 01:21:51 +0100
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Subject: [PATCH] Fix leak in getaddrinfo introduced by the fix for
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CVE-2023-4806 [BZ #30843]
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This patch fixes a very recently added leak in getaddrinfo.
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Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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---
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nss/Makefile | 20 ++++++++++++++++++++
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nss/tst-nss-gai-hv2-canonname.c | 3 +++
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sysdeps/posix/getaddrinfo.c | 4 +---
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3 files changed, 24 insertions(+), 3 deletions(-)
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diff --git a/nss/Makefile b/nss/Makefile
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index 8a5126ecf3..668ba34b18 100644
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--- a/nss/Makefile
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+++ b/nss/Makefile
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@@ -149,6 +149,15 @@ endif
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extra-test-objs += nss_test1.os nss_test2.os nss_test_errno.os \
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nss_test_gai_hv2_canonname.os
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+ifeq ($(run-built-tests),yes)
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+ifneq (no,$(PERL))
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+tests-special += $(objpfx)mtrace-tst-nss-gai-hv2-canonname.out
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+endif
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+endif
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+
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+generated += mtrace-tst-nss-gai-hv2-canonname.out \
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+ tst-nss-gai-hv2-canonname.mtrace
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+
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include ../Rules
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ifeq (yes,$(have-selinux))
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@@ -217,6 +226,17 @@ endif
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$(objpfx)tst-nss-files-alias-leak.out: $(objpfx)/libnss_files.so
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$(objpfx)tst-nss-files-alias-truncated.out: $(objpfx)/libnss_files.so
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+tst-nss-gai-hv2-canonname-ENV = \
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+ MALLOC_TRACE=$(objpfx)tst-nss-gai-hv2-canonname.mtrace \
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+ LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
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+$(objpfx)mtrace-tst-nss-gai-hv2-canonname.out: \
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+ $(objpfx)tst-nss-gai-hv2-canonname.out
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+ { test -r $(objpfx)tst-nss-gai-hv2-canonname.mtrace \
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+ || ( echo "tst-nss-gai-hv2-canonname.mtrace does not exist"; exit 77; ) \
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+ && $(common-objpfx)malloc/mtrace \
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+ $(objpfx)tst-nss-gai-hv2-canonname.mtrace; } > $@; \
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+ $(evaluate-test)
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+
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# Disable DT_RUNPATH on NSS tests so that the glibc internal NSS
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# functions can load testing NSS modules via DT_RPATH.
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LDFLAGS-tst-nss-test1 = -Wl,--disable-new-dtags
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diff --git a/nss/tst-nss-gai-hv2-canonname.c b/nss/tst-nss-gai-hv2-canonname.c
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index d5f10c07d6..7db53cf09d 100644
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--- a/nss/tst-nss-gai-hv2-canonname.c
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+++ b/nss/tst-nss-gai-hv2-canonname.c
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@@ -21,6 +21,7 @@
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#include <netdb.h>
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#include <stdlib.h>
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#include <string.h>
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+#include <mcheck.h>
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#include <support/check.h>
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#include <support/xstdio.h>
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#include "nss/tst-nss-gai-hv2-canonname.h"
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@@ -41,6 +42,8 @@ static void do_prepare (int a, char **av)
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static int
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do_test (void)
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{
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+ mtrace ();
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+
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__nss_configure_lookup ("hosts", "test_gai_hv2_canonname");
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struct addrinfo hints = {};
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diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
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index 47f421fddf..531124958d 100644
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--- a/sysdeps/posix/getaddrinfo.c
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+++ b/sysdeps/posix/getaddrinfo.c
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@@ -1196,9 +1196,7 @@ free_and_return:
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if (malloc_name)
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free ((char *) name);
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free (addrmem);
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- if (res.free_at)
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- free (res.at);
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- free (res.canon);
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+ gaih_result_reset (&res);
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return result;
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}
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--
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2.42.0
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