mirror of
git://slackware.nl/current.git
synced 2025-01-03 23:03:22 +01:00
667b86aaab
a/aaa_glibc-solibs-2.33-x86_64-3.txz: Rebuilt.
a/usbutils-014-x86_64-1.txz: Upgraded.
ap/mariadb-10.6.4-x86_64-1.txz: Upgraded.
ap/nvme-cli-1.15-x86_64-1.txz: Upgraded.
l/glibc-2.33-x86_64-3.txz: Rebuilt.
Since glibc-2.34 makes a potentially risky change of moving all functions
into the main library, and another inconvenient (for us) change of renaming
the library files, we'll stick with glibc-2.33 for Slackware 15.0 and test
the newer glibc in the next release cycle. But we'll backport the security
fixes from glibc-2.34 with this update:
The nameserver caching daemon (nscd), when processing a request for netgroup
lookup, may crash due to a double-free, potentially resulting in degraded
service or Denial of Service on the local system. Reported by Chris Schanzle.
The mq_notify function has a potential use-after-free issue when using a
notification type of SIGEV_THREAD and a thread attribute with a non-default
affinity mask.
The wordexp function may overflow the positional parameter number when
processing the expansion resulting in a crash. Reported by Philippe Antoine.
For more information, see:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27645
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33574
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35942
(* Security fix *)
l/glibc-i18n-2.33-x86_64-3.txz: Rebuilt.
l/glibc-profile-2.33-x86_64-3.txz: Rebuilt.
l/liburing-2.0-x86_64-1.txz: Added.
This is needed by mariadb, and provides increased performance on high speed
devices such as NVMe.
n/dovecot-2.3.16-x86_64-1.txz: Upgraded.
xap/blueman-2.2.2-x86_64-1.txz: Upgraded.
71 lines
2.3 KiB
Diff
71 lines
2.3 KiB
Diff
From 42d359350510506b87101cf77202fefcbfc790cb Mon Sep 17 00:00:00 2001
|
|
From: Andreas Schwab <schwab@linux-m68k.org>
|
|
Date: Thu, 27 May 2021 12:49:47 +0200
|
|
Subject: [PATCH] Use __pthread_attr_copy in mq_notify (bug 27896)
|
|
|
|
Make a deep copy of the pthread attribute object to remove a potential
|
|
use-after-free issue.
|
|
---
|
|
NEWS | 4 ++++
|
|
sysdeps/unix/sysv/linux/mq_notify.c | 15 ++++++++++-----
|
|
2 files changed, 14 insertions(+), 5 deletions(-)
|
|
|
|
diff --git a/NEWS b/NEWS
|
|
index 6f4d325d55..1bf3daa502 100644
|
|
--- a/NEWS
|
|
+++ b/NEWS
|
|
@@ -62,6 +62,10 @@ Security related changes:
|
|
potentially resulting in degraded service or Denial of Service on the
|
|
local system. Reported by Chris Schanzle.
|
|
|
|
+ CVE-2021-33574: The mq_notify function has a potential use-after-free
|
|
+ issue when using a notification type of SIGEV_THREAD and a thread
|
|
+ attribute with a non-default affinity mask.
|
|
+
|
|
The following bugs are resolved with this release:
|
|
|
|
[The release manager will add the list generated by
|
|
diff --git a/sysdeps/unix/sysv/linux/mq_notify.c b/sysdeps/unix/sysv/linux/mq_notify.c
|
|
index cc575a0cdd..f7ddfe5a6c 100644
|
|
--- a/sysdeps/unix/sysv/linux/mq_notify.c
|
|
+++ b/sysdeps/unix/sysv/linux/mq_notify.c
|
|
@@ -133,8 +133,11 @@ helper_thread (void *arg)
|
|
(void) __pthread_barrier_wait (¬ify_barrier);
|
|
}
|
|
else if (data.raw[NOTIFY_COOKIE_LEN - 1] == NOTIFY_REMOVED)
|
|
- /* The only state we keep is the copy of the thread attributes. */
|
|
- free (data.attr);
|
|
+ {
|
|
+ /* The only state we keep is the copy of the thread attributes. */
|
|
+ pthread_attr_destroy (data.attr);
|
|
+ free (data.attr);
|
|
+ }
|
|
}
|
|
return NULL;
|
|
}
|
|
@@ -255,8 +258,7 @@ mq_notify (mqd_t mqdes, const struct sigevent *notification)
|
|
if (data.attr == NULL)
|
|
return -1;
|
|
|
|
- memcpy (data.attr, notification->sigev_notify_attributes,
|
|
- sizeof (pthread_attr_t));
|
|
+ __pthread_attr_copy (data.attr, notification->sigev_notify_attributes);
|
|
}
|
|
|
|
/* Construct the new request. */
|
|
@@ -270,7 +272,10 @@ mq_notify (mqd_t mqdes, const struct sigevent *notification)
|
|
|
|
/* If it failed, free the allocated memory. */
|
|
if (__glibc_unlikely (retval != 0))
|
|
- free (data.attr);
|
|
+ {
|
|
+ pthread_attr_destroy (data.attr);
|
|
+ free (data.attr);
|
|
+ }
|
|
|
|
return retval;
|
|
}
|
|
--
|
|
2.27.0
|
|
|
|
|