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Fedora 34: 2021:3fc0188b3a Severe Memory Corruption in glibc NSS Cache

This glibc update contains a fix for a double-free in the nscd netgroup cache, and improves debugging information by: * not removing debugging information from ld.so * adjusting to changes in rpm in order to keep stripping debugging information from binaries * removing a conflict between contents of 32 and 64 bit debuginfo packages so they can remain installed simultaneously on a system. --------------------------------------------------------------------------------Fedora Update Notification FEDORA-2021-2ba993d6c5 2021-05-22 01:07:28.002865 --------------------------------------------------------------------------------Name : glibc Product : Fedora 33 Version : 2.32 Release : 6.fc33 URL : https://www.gnu.org/software/libc/ Summary : The GNU libc libraries Description : The glibc package contains standard libraries which are used by multiple programs on the system. In order to save disk space and memory, as well as to make upgrading easier, common system code is kept in one place and shared between programs. This particular package contains the most important sets of shared libraries: the standard C library and the standard math library. Without these two libraries, a Linux system will not function. --------------------------------------------------------------------------------Update Information: This glibc update contains a fix for a double-free in the nscd netgroup cache, and improves debugging information by: * not removing debugging information from ld.so * adjusting to changes in rpm in order to keep stripping debugging information from binaries * removing a conflict between contents of 32 and 64 bit debuginfo packages so they can remain installed simultaneously on a system --------------------------------------------------------------------------------ChangeLog: * Wed May 19 2021 Arjun Shankar - 2.32-6 - Use distribution mechanism for debuginfo (#1661510, #1886295, #1905611) * Tue May 18 2021 Arjun Shankar - 2.32-5 - Auto-sync withupstream branch release/2.32/master, commit 1799ac8eabe87acd7b1ef7c3a483171489563482: - support: Typo and formatting fixes - support: Pass environ to child process - Fix SXID_ERASE behavior in setuid programs (BZ #27471) - Enhance setuid-tunables test - tst-env-setuid: Use support_capture_subprogram_self_sgid - support: Add capability to fork an sgid child - S390: Also check vector support in memmove ifunc-selector [BZ #27511] - powerpc64: Workaround sigtramp vdso return call - nscd: Fix double free in netgroupcache [BZ #27462] --------------------------------------------------------------------------------References: [ 1 ] Bug #1661510 - glibc: Adjust to rpm's find-debuginfo.sh changes, to keep stripping binaries [Fedora] https://bugzilla.redhat.com/show_bug.cgi?id=1661510 [ 2 ] Bug #1886295 - glibc: ldconfig debuginfo file conflict between i686 and x86_64 https://bugzilla.redhat.com/show_bug.cgi?id=1886295 [ 3 ] Bug #1905611 - glibc: Do not remove debugging information from ld.so https://bugzilla.redhat.com/show_bug.cgi?id=1905611 [ 4 ] Bug #1932590 - CVE-2021-27645 glibc: Use-after-free in addgetnetgrentX function in netgroupcache.c [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=1932590 --------------------------------------------------------------------------------This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2021-2ba993d6c5' at the command line. For more information, refer to the dnf documentation available at https://dnf.readthedocs.io/en/latest/command_ref.html All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/security/ --------------------------------------------------------------------------------_______________________________________________ package-announce mailing list -- This email address is being protected from spambots. You need JavaScript enabled to view it. To unsubscribe send an email This email address is being protected from spambots. You need JavaScript enabled to view it. Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it./ Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure . This patch resolves an important memory leak vulnerability in OpenSSL and improves performance metrics for Ubuntu 20.04 users.. Fedora Update, Glibc Double-Free, Debugging Improvements. . Severity: Critical. LinuxSecurity.com Team

May 21, 2021 •Critical Fedora