PT-2021-8140 · Linux+4 · Linux Kernel+4

Published 2021-12-20 · Updated 2025-01-16 · CVE-2021-47086

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description The vulnerability is related to the phonet/pep component of the Linux kernel, which incorrectly handles unbound pipes. This can lead to two problems: sending a pipe enablement request with an invalid source object and later socket calls potentially causing a bug due to the socket being connected yet not bound to a valid object. The issue is associated with the ioctl() function implicitly assuming a bound socket.

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

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2024-08408

CVE-2021-47086

OESA-2024-1346

OESA-2024-1392

OPENSUSE-SU-2024_2947-1

SUSE-SU-2024:2894-1

SUSE-SU-2024:2939-1

SUSE-SU-2024:2947-1

SUSE-SU-2024_2894-1

SUSE-SU-2024_2947-1

USN-7183-1

USN-7184-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

Ubuntu

References · 1317

• https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52 · Patch
• https://ubuntu.com/security/CVE-2024-42101 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-40912 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47122 · Security Note
• https://osv.dev/vulnerability/USN-7184-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-23307 · Security Note
• https://ubuntu.com/security/CVE-2024-36941 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47013 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-46926 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-26600 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-52469 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-26622 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-52604 · Security Note
• https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0b · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-46909 · Security Note