PT-2021-8143 · Linux+2 · Linux Kernel+2

Published 2021-12-22 · Updated 2024-11-05 · CVE-2021-47096

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

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

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

Description The issue is related to the rawmidi component of the Linux kernel and involves the use of an uninitialized variable user pversion. This can allow an attacker to cause a denial of service. The problem arises because the file private structure uses kmalloc for allocation, and the kernel ALSA sequencer code clears the file structure, making additional fixes unnecessary.

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

Use of Uninitialized Resource

Weakness Enumeration

CWE-457

CWE-908

Related Identifiers

BDU:2024-08415

CVE-2021-47096

OPENSUSE-SU-2024_1321-1

OPENSUSE-SU-2024_1322-1

OPENSUSE-SU-2024_1322-2

OPENSUSE-SU-2024_1332-1

OPENSUSE-SU-2024_1332-2

OPENSUSE-SU-2024_1466-1

OPENSUSE-SU-2024_1480-1

OPENSUSE-SU-2024_1490-1

SUSE-SU-2024:1320-1

SUSE-SU-2024:1321-1

SUSE-SU-2024:1466-1

SUSE-SU-2024:1480-1

SUSE-SU-2024:1490-1

Affected Products

Linux Kernel

Red Os

Suse

References · 466

• https://osv.dev/vulnerability/SUSE-SU-2024:1320-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:1466-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47096 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47096 · Security Note
• https://git.kernel.org/stable/c/39a8fc4971a00d22536aeb7d446ee4a97810611b · Patch
• https://ubuntu.com/security/CVE-2021-47096 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-47096 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:1480-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-47096 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47096 · Vendor Advisory
• https://git.kernel.org/stable/c/b398fcbe4de1e1100867fdb6f447c6fbc8fe7085 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:1490-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:1321-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-47096 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-08415 · Security Note