--------------------------------------------------------------------------------
Fedora Update Notification
FEDORA-2024-07597a0fb3
2024-02-01 01:23:37.270537
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Name        : glibc
Product     : Fedora 38
Version     : 2.37
Release     : 18.fc38
URL         : http://www.gnu.org/software/glibc/
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:

Security fix for CVE-2023-6246, CVE-2023-6779, and CVE-2023-6780.
CVE-2023-6246:  __vsyslog_internal did not handle a case where printing a
SYSLOG_HEADER containing a long program name failed to update the required
buffer size, leading to the allocation and overflow of a too-small buffer on the
heap.  CVE-2023-6779: __vsyslog_internal used the return value of
snprintf/vsnprintf to calculate buffer sizes for memory allocation.  If these
functions (for any reason) failed and returned -1, the resulting buffer would be
too small to hold output.  CVE-2023-6780: __vsyslog_internal calculated a buffer
size by adding two integers, but did not first check if the addition would
overflow.
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ChangeLog:

* Tue Jan 30 2024 Patsy Griffin  - 2.37-18
- Auto-sync with upstream branch release/2.37/master,
  commit 2b58cba076e912961ceaa5fa58588e4b10f791c0:
- syslog: Fix integer overflow in __vsyslog_internal (CVE-2023-6780)
- syslog: Fix heap buffer overflow in __vsyslog_internal (CVE-2023-6779)
- syslog: Fix heap buffer overflow in __vsyslog_internal (CVE-2023-6246)
- sunrpc: Fix netname build with older gcc
* Mon Jan 29 2024 Arjun Shankar  - 2.37-17
- Auto-sync with upstream branch release/2.37/master,
  commit bd9f194c34333c0148fc0a793b8e68e2399f27cb:
- libio: Check remaining buffer size in _IO_wdo_write (bug 31183)
- getaddrinfo: translate ENOMEM to EAI_MEMORY (bug 31163)
- NEWS: Mention bug fixes for 29039/30745/30843
- x86-64: Fix the tcb field load for x32 [BZ #31185]
- x86-64: Fix the dtv field load for x32 [BZ #31184]
- elf: Fix TLS modid reuse generation assignment (BZ 29039)
- elf: Fix wrong break removal from 8ee878592c
--------------------------------------------------------------------------------
References:

  [ 1 ] Bug #2249053 - CVE-2023-6246 glibc: heap-based buffer overflow in __vsyslog_internal()
        https://bugzilla.redhat.com/show_bug.cgi?id=2249053
  [ 2 ] Bug #2254395 - CVE-2023-6779 glibc: off-by-one heap-based buffer overflow in __vsyslog_internal()
        https://bugzilla.redhat.com/show_bug.cgi?id=2254395
  [ 3 ] Bug #2254396 - CVE-2023-6780 glibc: integer overflow in __vsyslog_internal()
        https://bugzilla.redhat.com/show_bug.cgi?id=2254396
--------------------------------------------------------------------------------

This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2024-07597a0fb3' 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/
--------------------------------------------------------------------------------
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Fedora 38: glibc 2024-07597a0fb3

February 1, 2024
Security fix for CVE-2023-6246, CVE-2023-6779, and CVE-2023-6780

Summary

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:

Security fix for CVE-2023-6246, CVE-2023-6779, and CVE-2023-6780. CVE-2023-6246: __vsyslog_internal did not handle a case where printing a SYSLOG_HEADER containing a long program name failed to update the required buffer size, leading to the allocation and overflow of a too-small buffer on the heap. CVE-2023-6779: __vsyslog_internal used the return value of snprintf/vsnprintf to calculate buffer sizes for memory allocation. If these functions (for any reason) failed and returned -1, the resulting buffer would be too small to hold output. CVE-2023-6780: __vsyslog_internal calculated a buffer size by adding two integers, but did not first check if the addition would overflow.

Change Log

* Tue Jan 30 2024 Patsy Griffin - 2.37-18 - Auto-sync with upstream branch release/2.37/master, commit 2b58cba076e912961ceaa5fa58588e4b10f791c0: - syslog: Fix integer overflow in __vsyslog_internal (CVE-2023-6780) - syslog: Fix heap buffer overflow in __vsyslog_internal (CVE-2023-6779) - syslog: Fix heap buffer overflow in __vsyslog_internal (CVE-2023-6246) - sunrpc: Fix netname build with older gcc * Mon Jan 29 2024 Arjun Shankar - 2.37-17 - Auto-sync with upstream branch release/2.37/master, commit bd9f194c34333c0148fc0a793b8e68e2399f27cb: - libio: Check remaining buffer size in _IO_wdo_write (bug 31183) - getaddrinfo: translate ENOMEM to EAI_MEMORY (bug 31163) - NEWS: Mention bug fixes for 29039/30745/30843 - x86-64: Fix the tcb field load for x32 [BZ #31185] - x86-64: Fix the dtv field load for x32 [BZ #31184] - elf: Fix TLS modid reuse generation assignment (BZ 29039) - elf: Fix wrong break removal from 8ee878592c

References

[ 1 ] Bug #2249053 - CVE-2023-6246 glibc: heap-based buffer overflow in __vsyslog_internal() https://bugzilla.redhat.com/show_bug.cgi?id=2249053 [ 2 ] Bug #2254395 - CVE-2023-6779 glibc: off-by-one heap-based buffer overflow in __vsyslog_internal() https://bugzilla.redhat.com/show_bug.cgi?id=2254395 [ 3 ] Bug #2254396 - CVE-2023-6780 glibc: integer overflow in __vsyslog_internal() https://bugzilla.redhat.com/show_bug.cgi?id=2254396

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2024-07597a0fb3' at the command line. For more information, refer to the dnf documentation available at https://dnf.readthedocs.io/en/latest/command_ref.html

Severity
Name : glibc
Product : Fedora 38
Version : 2.37
Release : 18.fc38
URL : http://www.gnu.org/software/glibc/
Summary : The GNU libc libraries

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