PT-2020-5208 · Linux+9 · Linux Kernel+9

Bodong Zhao + 1 · Published 2020-10-16 · Updated 2024-08-20 · CVE-2020-25656

Positive Technologies (AI Summary)

CVSS v3.1

4.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to a use-after-free flaw in the Linux kernel's console subsystem, specifically in the way it uses ioctls KDGKBSENT and KDSKBSENT. This could allow a local user to gain read access to memory out of bounds, posing a threat to data confidentiality.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALSA-2024:2950

ALSA-2024:3138

ALT-PU-2020-3217

ALT-PU-2020-3223

ALT-PU-2020-3224

ALT-PU-2020-3255

ALT-PU-2020-3259

ALT-PU-2020-3470

ALT-PU-2020-3536

ALT-PU-2020-3553

ALT-PU-2020-3571

ALT-PU-2021-1083

ALT-PU-2021-1105

ALT-PU-2021-1211

ALT-PU-2021-1446

ALT-PU-2021-1621

ALT-PU-2021-1656

ALT-PU-2021-1739

ALT-PU-2021-1745

ALT-PU-2021-1862

ALT-PU-2021-1866

ALT-PU-2021-1870

BDU:2020-05831

CESA-2021_0856

CESA-2024_2950

CESA-2024_3138

CVE-2020-25656

DLA-2483-1

DLA-2494-1

INFSA-2024_2950

INFSA-2024_3138

MGASA-2021-0030

MGASA-2021-0031

OESA-2021-1003

OPENSUSE-SU-2020:1906-1

OPENSUSE-SU-2020:2112-1

OPENSUSE-SU-2020_1906-1

OPENSUSE-SU-2020_2112-1

OPENSUSE-SU-2021:0242-1

OPENSUSE-SU-2021_0242-1

OPENSUSE-SU-2024:10728-1

OPENSUSE-SU-2024:13704-1

RHSA-2021:0856

RHSA-2021:0857

RHSA-2021_0856

RHSA-2021_0857

RHSA-2024:2950

RHSA-2024:3138

RHSA-2024_2950

RHSA-2024_3138

RLSA-2024:2950

RLSA-2024:3138

SUSE-SU-2020:3272-1

SUSE-SU-2020:3273-1

SUSE-SU-2020:3281-1

SUSE-SU-2020:3326-1

SUSE-SU-2020:3484-1

SUSE-SU-2020:3491-1

SUSE-SU-2020:3501-1

SUSE-SU-2020:3503-1

SUSE-SU-2020:3512-1

SUSE-SU-2020:3513-1

SUSE-SU-2020:3522-1

SUSE-SU-2020:3532-1

SUSE-SU-2020:3544-1

SUSE-SU-2020_3273-1

SUSE-SU-2021:14630-1

SUSE-SU-2021_14630-1

USN-4679-1

USN-4680-1

USN-4681-1

USN-4751-1

Affected Products

Alt Linux

Almalinux

Astra Linux

Centos

Linuxmint

Linux Kernel

Red Hat

Rocky Linux

Suse

Ubuntu

References · 1393

• 🔥 https://bugzilla.redhat.com/show_bug.cgi?id=1888726 · Exploit
• 🔥 https://lkml.org/lkml/2020/10/16/84 · Exploit
• https://osv.dev/vulnerability/USN-4751-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-25656 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-28588 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-29660 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2024:3138 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2483-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:2112-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-29569 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-14351 · Security Note
• https://osv.dev/vulnerability/USN-4681-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-0148 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2020-5995.html · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2024:2950 · Vendor Advisory