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ubuntucveUbuntu.comUB:CVE-2021-43389
HistoryNov 04, 2021 - 12:00 a.m.

CVE-2021-43389

2021-11-0400:00:00
ubuntu.com
ubuntu.com
27

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

30.7%

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.

Bugs

Notes

Author Note
cascardo Adding a CAPI controller with CMTP requires CAP_NET_ADMIN in the initial namespace (init_ns). Other ISDN controllers that use CAPI have been removed upstream.
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux-azure-4.15< 4.15.0-1129.142UNKNOWN
ubuntu20.04noarchlinux-azure-5.11< 5.11.0-1023.24~20.04.1UNKNOWN
ubuntu18.04noarchlinux-azure-5.4< 5.4.0-1065.68~18.04.1UNKNOWN
ubuntu22.04noarchlinux-azure-fde< anyUNKNOWN
ubuntu20.04noarchlinux-azure-fde< 5.4.0-1065.68UNKNOWN
ubuntu20.04noarchlinux-bluefield< 5.4.0-1023.26UNKNOWN
ubuntu18.04noarchlinux-dell300x< 4.15.0-1033.38UNKNOWN
ubuntu21.04noarchlinux-gcp< 5.11.0-1024.26UNKNOWN
ubuntu21.10noarchlinux-gcp< 5.13.0-1008.9UNKNOWN
ubuntu16.04noarchlinux-gcp< 4.15.0-1114.128~16.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
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References

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

30.7%

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