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author Patrick J Volkerding <volkerdi@slackware.com>2021-08-07 19:04:04 +0000
committer Eric Hameleers <alien@slackware.com>2021-08-08 00:01:02 +0200
commit667b86aaab3e72c3c6a80e2b7dcbe2da39c89d71 (patch)
tree12041cb9dbd5f1f91ee2c6d37a9987ba7f28bf17 /source/l/glibc/patches/CVE-2021-33574_2.patch
parent295fdc80f2f76c209bec6289e8a8115cbc3867d8 (diff)
downloadcurrent-667b86aaab3e72c3c6a80e2b7dcbe2da39c89d71.tar.gz
current-667b86aaab3e72c3c6a80e2b7dcbe2da39c89d71.tar.xz
Sat Aug 7 19:04:04 UTC 202120210807190404
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.
Diffstat (limited to 'source/l/glibc/patches/CVE-2021-33574_2.patch')
-rw-r--r--source/l/glibc/patches/CVE-2021-33574_2.patch53
1 files changed, 53 insertions, 0 deletions
diff --git a/source/l/glibc/patches/CVE-2021-33574_2.patch b/source/l/glibc/patches/CVE-2021-33574_2.patch
new file mode 100644
index 000000000..608dbfdc5
--- /dev/null
+++ b/source/l/glibc/patches/CVE-2021-33574_2.patch
@@ -0,0 +1,53 @@
+From 217b6dc298156bdb0d6aea9ea93e7e394a5ff091 Mon Sep 17 00:00:00 2001
+From: Florian Weimer <fweimer@redhat.com>
+Date: Tue, 1 Jun 2021 17:51:41 +0200
+Subject: [PATCH] Fix use of __pthread_attr_copy in mq_notify (bug 27896)
+
+__pthread_attr_copy can fail and does not initialize the attribute
+structure in that case.
+
+If __pthread_attr_copy is never called and there is no allocated
+attribute, pthread_attr_destroy should not be called, otherwise
+there is a null pointer dereference in rt/tst-mqueue6.
+
+Fixes commit 42d359350510506b87101cf77202fefcbfc790cb
+("Use __pthread_attr_copy in mq_notify (bug 27896)").
+
+Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
+---
+ sysdeps/unix/sysv/linux/mq_notify.c | 11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 deletions(-)
+
+diff --git a/sysdeps/unix/sysv/linux/mq_notify.c b/sysdeps/unix/sysv/linux/mq_notify.c
+index f7ddfe5a6c..6f46d29d1d 100644
+--- a/sysdeps/unix/sysv/linux/mq_notify.c
++++ b/sysdeps/unix/sysv/linux/mq_notify.c
+@@ -258,7 +258,14 @@ mq_notify (mqd_t mqdes, const struct sigevent *notification)
+ if (data.attr == NULL)
+ return -1;
+
+- __pthread_attr_copy (data.attr, notification->sigev_notify_attributes);
++ int ret = __pthread_attr_copy (data.attr,
++ notification->sigev_notify_attributes);
++ if (ret != 0)
++ {
++ free (data.attr);
++ __set_errno (ret);
++ return -1;
++ }
+ }
+
+ /* Construct the new request. */
+@@ -271,7 +278,7 @@ mq_notify (mqd_t mqdes, const struct sigevent *notification)
+ int retval = INLINE_SYSCALL (mq_notify, 2, mqdes, &se);
+
+ /* If it failed, free the allocated memory. */
+- if (__glibc_unlikely (retval != 0))
++ if (retval != 0 && data.attr != NULL)
+ {
+ pthread_attr_destroy (data.attr);
+ free (data.attr);
+--
+2.27.0
+
+