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CVE-2021-43389

Date: November 4, 2021

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.

Severity Score

Related Resources (16)

https://access.redhat.com/security/cve/CVE-2021-43389
https://nvd.nist.gov/vuln/detail/CVE-2021-43389
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15
https://lore.kernel.org/netdev/CAFcO6XOvGQrRTaTkaJ0p3zR7y7nrAWD79r48=L_BbOyrK9X-vA@mail.gmail.com/
https://lore.kernel.org/netdev/CAFcO6XOvGQrRTaTkaJ0p3zR7y7nrAWD79r48=L_BbOyrK9X-vA%40mail.gmail.com/
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1f3e2e97c003f80c4b087092b225c8787ff91e4d
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-43389
http://www.openwall.com/lists/oss-security/2021/11/05/1
https://www.debian.org/security/2022/dsa-5096
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
https://security-tracker.debian.org/tracker/CVE-2021-43389
https://www.oracle.com/security-alerts/cpujul2022.html
https://bugzilla.redhat.com/show_bug.cgi?id=2013180
https://seclists.org/oss-sec/2021/q4/39
https://www.mend.io/vulnerability-database/CVE-2021-43389

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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