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import util-linux-2.32.1-41.el8

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CentOS Sources 2023-02-18 00:53:10 +00:00 committed by Stepan Oksanichenko
parent 9b7c775079
commit de7431c89a
2 changed files with 60 additions and 1 deletions
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55
SOURCES/0092-last-use-full-size-of-the-username.patch Normal file
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@ -0,0 +1,55 @@
From f435f80b9ae88caf9fe8af2e9b705dc8296ad6f3 Mon Sep 17 00:00:00 2001
From: Karel Zak <kzak@redhat.com>
Date: Mon, 13 Feb 2023 16:22:23 +0100
Subject: last: use full size of the username
utmp uses 32 bytes for username, last(1) truncates it to 31 when calls getpwnam().
Reported-by: Radka Skvarilova <rskvaril@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=2160321
Upstream: http://github.com/util-linux/util-linux/commit/4b646f01600a5efcf16e8e8991010b49b250bdfe
---
login-utils/last.1 | 4 ++++
login-utils/last.c | 6 ++++--
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/login-utils/last.1 b/login-utils/last.1
index 94b4ed012..9169abd35 100644
--- a/login-utils/last.1
+++ b/login-utils/last.1
@@ -178,6 +178,10 @@ files to be used, they can be created with a simple
.BR touch (1)
command (for example,
.IR "touch /var/log/wtmp" ).
+
+The utmp file format uses fixed sizes of strings, which means that very long strings are
+impossible to store in the file and impossible to display by last. The usual limits are 32
+bytes for a user and line name and 256 bytes for a hostname.
.SH FILES
/var/log/wtmp
.br
diff --git a/login-utils/last.c b/login-utils/last.c
index 8f7c36984..41ce03894 100644
--- a/login-utils/last.c
+++ b/login-utils/last.c
@@ -602,12 +602,14 @@ static int is_phantom(const struct last_control *ctl, struct utmpx *ut)
{
struct passwd *pw;
char path[sizeof(ut->ut_line) + 16];
+ char user[sizeof(ut->ut_user) + 1];
int ret = 0;
if (ut->ut_tv.tv_sec < ctl->boot_time.tv_sec)
return 1;
- ut->ut_user[sizeof(ut->ut_user) - 1] = '\0';
- pw = getpwnam(ut->ut_user);
+
+ mem2strcpy(user, ut->ut_user, sizeof(ut->ut_user), sizeof(user));
+ pw = getpwnam(user);
if (!pw)
return 1;
snprintf(path, sizeof(path), "/proc/%u/loginuid", ut->ut_pid);
--
2.39.1

6
SPECS/util-linux.spec
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@ -2,7 +2,7 @@
Summary: A collection of basic system utilities
Name: util-linux
Version: 2.32.1
Release: 40%{?dist}
Release: 41%{?dist}
License: GPLv2 and GPLv2+ and LGPLv2+ and BSD with advertising and Public Domain
Group: System Environment/Base
URL: http://en.wikipedia.org/wiki/Util-linux
@ -276,6 +276,7 @@ Patch89: 0089-libmount-use-generic-error-message-for-EACCES-on-umo.patch
Patch90: 0090-lslogins-man-explain-password-statuses.patch
# 2160321 - [last] ut->ut_user is not null terminated
Patch91: 0091-last-sync-utmp-strings-use-with-upstream-code.patch
Patch92: 0092-last-use-full-size-of-the-username.patch
%description
@ -1125,6 +1126,9 @@ fi
%{_libdir}/python*/site-packages/libmount/
%changelog
* Mon Feb 13 2023 Karel Zak <kzak@redhat.com> 2.32.1-41
- improve #2160321 - [last] ut->ut_user is not null terminated
* Mon Feb 06 2023 Karel Zak <kzak@redhat.com> 2.32.1-40
- fix #2121699 - fstrim -av fails to trim root filesystem on Red Hat Coreos
- fix #2142496 - update upstream tests