CVE-2021-43389

MEDIUM

Linux kernel <5.14.15 - Memory Corruption

Title source: llm
STIX 2.1

Description

An issue was discovered in the Linux kernel before 5.14.15. There is an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c.

References (10)

Core 10
Core References
Mailing List, Release Notes, Third Party Advisory x_refsource_misc
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15
Exploit, Mailing List, Third Party Advisory x_refsource_misc
https://seclists.org/oss-sec/2021/q4/39
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/11/05/1
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2022/dsa-5096
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujul2022.html
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=2013180

Scores

CVSS v3 5.5
EPSS 0.0001
EPSS Percentile 1.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-125
Status published
Products (7)
debian/debian_linux 9.0
debian/debian_linux 10.0
linux/linux_kernel < 5.14.15
oracle/communications_cloud_native_core_binding_support_function 22.1.3
oracle/communications_cloud_native_core_network_exposure_function 22.1.1
oracle/communications_cloud_native_core_policy 22.2.0
redhat/enterprise_linux 8.0
Published Nov 04, 2021
Tracked Since Feb 18, 2026