86 lines
2.9 KiB
Diff
86 lines
2.9 KiB
Diff
From 53c6b01e8e3fd338d7f53e5ff817ef86f9efa852 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?P=C3=A1draig=20Brady?= <P@draigBrady.com>
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Date: Wed, 11 Nov 2020 17:22:33 +0000
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Subject: [PATCH] ls: fix crash printing SELinux context for unstatable files
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This crash was identified by Cyber Independent Testing Lab:
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https://cyber-itl.org/2020/10/28/citl-7000-defects.html
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and was introduced with commit v6.9.90-11-g4245876e2
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* src/ls.c (gobble_file): Ensure scontext is initialized
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in the case where files are not statable.
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* tests/ls/selinux-segfault.sh: Renamed from proc-selinux-segfault.sh,
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and added test case for broken symlinks.
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* tests/local.mk: Adjust for the renamed test.
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Upstream-commit: 6fc695cb4a26f09dfeef8b1c24895a707055334e
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Signed-off-by: Kamil Dudka <kdudka@redhat.com>
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---
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src/ls.c | 3 +++
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tests/local.mk | 2 +-
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.../{proc-selinux-segfault.sh => selinux-segfault.sh} | 10 ++++++++--
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3 files changed, 12 insertions(+), 3 deletions(-)
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rename tests/ls/{proc-selinux-segfault.sh => selinux-segfault.sh} (77%)
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diff --git a/src/ls.c b/src/ls.c
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index 4acf5f4..8eb483d 100644
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--- a/src/ls.c
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+++ b/src/ls.c
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@@ -3412,6 +3412,9 @@ gobble_file (char const *name, enum filetype type, ino_t inode,
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provokes an exit status of 1. */
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file_failure (command_line_arg,
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_("cannot access %s"), full_name);
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+
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+ f->scontext = UNKNOWN_SECURITY_CONTEXT;
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+
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if (command_line_arg)
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return 0;
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diff --git a/tests/local.mk b/tests/local.mk
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index 2aeff2b..2441fdc 100644
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--- a/tests/local.mk
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+++ b/tests/local.mk
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@@ -616,7 +616,7 @@ all_tests = \
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tests/ls/multihardlink.sh \
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tests/ls/no-arg.sh \
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tests/ls/no-cap.sh \
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- tests/ls/proc-selinux-segfault.sh \
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+ tests/ls/selinux-segfault.sh \
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tests/ls/quote-align.sh \
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tests/ls/readdir-mountpoint-inode.sh \
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tests/ls/recursive.sh \
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diff --git a/tests/ls/proc-selinux-segfault.sh b/tests/ls/selinux-segfault.sh
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similarity index 77%
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rename from tests/ls/proc-selinux-segfault.sh
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rename to tests/ls/selinux-segfault.sh
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index 831a00e..e2b7ef6 100755
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--- a/tests/ls/proc-selinux-segfault.sh
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+++ b/tests/ls/selinux-segfault.sh
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@@ -1,5 +1,5 @@
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#!/bin/sh
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-# ls -l /proc/sys would segfault when built against libselinux1 2.0.15-2+b1
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+# Ensure we don't segfault in selinux handling
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# Copyright (C) 2008-2020 Free Software Foundation, Inc.
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@@ -19,9 +19,15 @@
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ ls
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+# ls -l /proc/sys would segfault when built against libselinux1 2.0.15-2+b1
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f=/proc/sys
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test -r $f || f=.
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-
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ls -l $f > out || fail=1
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+# ls <= 8.32 would segfault when printing
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+# the security context of broken symlink targets
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+mkdir sedir || framework_failure_
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+ln -sf missing sedir/broken || framework_failure_
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+returns_ 1 ls -L -R -Z -m sedir > out || fail=1
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+
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Exit $fail
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--
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2.26.2
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