Описание
Vim is an open source, command line text editor. Prior to 9.2.0842, the socket server backend in src/socketserver.c accepts unbounded client connections in socketserver_accept(), causing descriptors to overflow fd_set structures in src/channel.c and fixed-size struct pollfd arrays in src/os_unix.c, which allows a local process that can connect to the server socket to corrupt stack memory or terminate the Vim server. This issue is fixed in version 9.2.0842.
A flaw was found in Vim. The socket server backend accepts an unbounded number of client connections, causing file descriptors to overflow internal data structures. A local process able to connect to the server socket can exploit this to corrupt stack memory or terminate the Vim server. This can lead to a denial of service (DoS) for the Vim server.
Отчет
This vulnerability is rated as Moderate severity because exploitation is restricted to local attackers, requires specific non-default server execution, and only results in a denial of service. Under typical Red Hat Enterprise Linux deployments, Vim operates as an interactive command-line editor and does not run in background server mode by default. Furthermore, standard binary hardening flags like FORTIFY_SOURCE on Red Hat systems ensure that descriptor table overruns cause an immediate process abort rather than arbitrary code execution, limiting the practical impact to the termination of the active editing session.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | vim | Under investigation | ||
| Red Hat Enterprise Linux 6 | vim | Under investigation | ||
| Red Hat Enterprise Linux 7 | vim | Under investigation | ||
| Red Hat Enterprise Linux 8 | vim | Under investigation | ||
| Red Hat Enterprise Linux 9 | vim | Under investigation | ||
| Red Hat OpenShift Container Platform 4 | openshift/ose-rhel-coreos-8 | Fix deferred | ||
| Red Hat OpenShift Container Platform 4 | openshift/ose-rhel-coreos-9 | Fix deferred | ||
| Red Hat OpenShift Container Platform 5 | openshift/ose-rhel-coreos-9 | Fix deferred | ||
| Red Hat Hardened Images | vim-main-9.2.967-1.hum1 | Fixed | RHSA-2026:56636 | 19.08.2026 |
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Дополнительная информация
Статус:
5.5 Medium
CVSS3
Связанные уязвимости
Vim is an open source, command line text editor. Prior to 9.2.0842, the socket server backend in src/socketserver.c accepts unbounded client connections in socketserver_accept(), causing descriptors to overflow fd_set structures in src/channel.c and fixed-size struct pollfd arrays in src/os_unix.c, which allows a local process that can connect to the server socket to corrupt stack memory or terminate the Vim server. This issue is fixed in version 9.2.0842.
Vim is an open source, command line text editor. Prior to 9.2.0842, the socket server backend in src/socketserver.c accepts unbounded client connections in socketserver_accept(), causing descriptors to overflow fd_set structures in src/channel.c and fixed-size struct pollfd arrays in src/os_unix.c, which allows a local process that can connect to the server socket to corrupt stack memory or terminate the Vim server. This issue is fixed in version 9.2.0842.
Vim is an open source, command line text editor. Prior to 9.2.0842, th ...
5.5 Medium
CVSS3