ALT-PU-2023-8646-2

Обновление пакета glibc в ветке sisyphus

Версия2.37.0.22.3593050c27-alt1

Задание#323911

Опубликовано2026-04-11

Макс. серьёзностьMEDIUM

Серьёзность:

Закрытые проблемы (3)

MEDIUM5.9

Уязвимость компонента nsswitch.conf библиотеки, обеспечивающей системные вызовы и основные функции glibc, позволяющая нарушителю вызвать отказ в обслуживании

Опубликовано: 2023-09-25Изменено: 2025-03-05

CVSS 3.xСРЕДНЯЯ 5.9

CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0ВЫСОКАЯ 7.6

CVSS:2.0/AV:N/AC:H/Au:N/C:C/I:C/A:C

Ссылки

CVE-2023-4813

MEDIUM5.9

A flaw has been identified in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.

Опубликовано: 2023-09-12Изменено: 2025-09-26

CVSS 3.xСРЕДНЯЯ 5.9

CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Ссылки

MEDIUM6.2

Calling NSS-backed functions that support caching via nscd may call the nscd client side code and in the GNU C Library version 2.36 under high load on x86_64 systems, the client may call memcmp on inputs that are concurrently modified by other processes or threads and crash. The nscd client in the GNU C Library uses the memcmp function with inputs that may be concurrently modified by another thread, potentially resulting in spurious cache misses, which in itself is not a security issue. However in the GNU C Library version 2.36 an optimized implementation of memcmp was introduced for x86_64 which could crash when invoked with such undefined behaviour, turning this into a potential crash of the nscd client and the application that uses it. This implementation was backported to the 2.35 branch, making the nscd client in that branch vulnerable as well. Subsequently, the fix for this issue was backported to all vulnerable branches in the GNU C Library repository. It is advised that distributions that may have cherry-picked the memcpy SSE2 optimization in their copy of the GNU C Library, also apply the fix to avoid the potential crash in the nscd client.

Опубликовано: 2026-03-11Изменено: 2026-04-09

CVSS 3.xСРЕДНЯЯ 6.2

CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Ссылки