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Package "libc6"

Name: libc6

Description:

GNU C Library: Shared libraries
Latest version: 2.31-0ubuntu9.18
Release: focal (20.04)
Level: security
Repository: main
Head package: glibc
Homepage: https://www.gnu.org/software/libc/libc.html

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Repository Area Version
base main 2.31-0ubuntu9
updates main 2.31-0ubuntu9.18

Changelog

Version: 2.31-0ubuntu9.18 2025-05-28 16:07:27 UTC

  glibc (2.31-0ubuntu9.18) focal-security; urgency=medium

  * SECURITY UPDATE: privelege escalation issue
    - debian/patches/any/CVE-2025-4802.patch: elf: Ignore LD_LIBRARY_PATH
      and debug env var for setuid for static
    - CVE-2025-4802

 -- Nishit Majithia <email address hidden> Mon, 26 May 2025 13:39:37 +0530
Source diff to previous version
CVE-2025-4802 Untrusted LD_LIBRARY_PATH environment variable vulnerability in the GNU C Library version 2.27 to 2.38 allows attacker controlled loading of dynamica

Version: 2.31-0ubuntu9.17 2025-02-06 17:06:57 UTC

  glibc (2.31-0ubuntu9.17) focal-security; urgency=medium

  * SECURITY UPDATE: Buffer overflow in the assert function.
    - debian/patches/any/CVE-2025-0395.patch: Change total to ALIGN_UP
      calculation and include libc-pointer-arith.h in assert/assert.c and
      sysdeps/posix/libc_fatal.c.
    - CVE-2025-0395

 -- Hlib Korzhynskyy <email address hidden> Wed, 29 Jan 2025 11:11:47 -0330
Source diff to previous version
CVE-2025-0395 When the assert() function in the GNU C Library versions 2.13 to 2.40 fails, it does not allocate enough space for the assertion failure message stri

Version: 2.31-0ubuntu9.16 2024-05-29 18:08:03 UTC

  glibc (2.31-0ubuntu9.16) focal-security; urgency=medium

  * SECURITY UPDATE: Stack-based buffer overflow
    - debian/patches/CVE-2024-33599.patch: CVE-2024-33599: nscd: Stack-
      based buffer overflow in netgroup cache.
    - CVE-2024-33599
  * SECURITY UPDATE: Null pointer
    - debian/patches/CVE-2024-33600_1.patch: CVE-2024-33600: nscd: Avoid
      null pointer crashes after notfound response.
    - debian/patches/CVE-2024-33600_2.patch: CVE-2024-33600: nscd: Do
      not send missing not-found response in addgetnetgrentX.
    - CVE-2024-33600
  * SECURITY UPDATE: Memory corruption
    - debian/patches/CVE-2024-33601_33602.patch: CVE-2024-33601, CVE-
      2024-33602: nscd: netgroup: Use two buffers in addgetnetgrentX.
    - CVE-2024-33601
    - CVE-2024-33602

 -- Paulo Flabiano Smorigo <email address hidden> Tue, 30 Apr 2024 15:20:18 -0300
Source diff to previous version
CVE-2024-33599 nscd: Stack-based buffer overflow in netgroup cache If the Name Service Cache Daemon's (nscd) fixed size cache is exhausted by client requests then
CVE-2024-33600 nscd: Null pointer crashes after notfound response If the Name Service Cache Daemon's (nscd) cache fails to add a not-found netgroup response to the
CVE-2024-33601 nscd: netgroup cache may terminate daemon on memory allocation failure The Name Service Cache Daemon's (nscd) netgroup cache uses xmalloc or xreallo
CVE-2024-33602 nscd: netgroup cache assumes NSS callback uses in-buffer strings The Name Service Cache Daemon's (nscd) netgroup cache can corrupt memory when the N

Version: 2.31-0ubuntu9.15 2024-04-18 14:06:52 UTC

  glibc (2.31-0ubuntu9.15) focal-security; urgency=medium

  * SECURITY UPDATE: OOB write in iconv plugin ISO-2022-CN-EXT
    - debian/patches/any/CVE-2024-2961.patch: fix out-of-bound writes when
      writing escape sequence in iconvdata/Makefile,
      iconvdata/iso-2022-cn-ext.c, iconvdata/tst-iconv-iso-2022-cn-ext.c.
    - CVE-2024-2961

 -- Marc Deslauriers <email address hidden> Tue, 16 Apr 2024 09:43:50 -0400
Source diff to previous version
CVE-2024-2961 The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting string

Version: 2.31-0ubuntu9.14 2023-12-07 18:06:59 UTC

  glibc (2.31-0ubuntu9.14) focal-security; urgency=medium

  * SECURITY UPDATE: use-after-free through getcanonname_r plugin call
    - debian/patches/any/CVE-2023-4806.patch: copy h_name over and free it at
      the end (getaddrinfo).
    - CVE-2023-4806
  * SECURITY UPDATE: use-after-free in gaih_inet function
    - debian/patches/any/CVE-2023-4813.patch: simplify allocations and fix
      merge and continue actions.
    - CVE-2023-4813
  * debian/testsuite-xfail-debian.mk: add tst-nss-gai-actions and
    tst-nss-gai-hv2-canonname to xfails (container tests).

 -- Camila Camargo de Matos <email address hidden> Wed, 22 Nov 2023 10:32:50 -0300
CVE-2023-4806 A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an applicatio
CVE-2023-4813 A flaw was found in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. Th


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