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CVE-2022-0185 Heap overflow

Immediate
Remediate Within 48 Hours

CVE Information

Original CVE data

Published:
Updated:

A heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the supplied parameters length. An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced CAP_SYS_ADMIN privilege) local user able to open a filesystem that does not support the Filesystem Context API (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system.

CWE: CWE-191
CVSS v27.2
AV:L/AC:L/AU:N/C:C/I:C/A:C
CVSS v38.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
https://github.com/Crusaders-of-Rust/CVE-2022-0185
https://www.openwall.com/lists/oss-security/2022/01/18/7
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=722d94847de2
https://www.willsroot.io/2022/01/cve-2022-0185.html
https://security.netapp.com/advisory/ntap-20220225-0003/
Affected Vendors

Linux - (1)

Netapp - (8)

Basic Analysis

Common vulnerability metrics

Vulnerabilty type as detected by PRIOnengine

Heap overflow

CVSS Scores as calculated by PRIOnengine
CVSS v27.2
AV:L/AC:L/AU:N/C:C/I:C/A:C
CVSS v37.8
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
MITRE CWE Top 25

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Exploits

Exploits are available either through exploit packs, Github repos or the world wide web in general.

Active Exploitation

Vulnerability is referenced under CISA's Known Exploited Vulnerabilities (KEV) catalog. See the KEV Catalog

Social Network Activity

-

Threat Actor Activity

No sightings of the vulnerability within threat reports.

Cybersecurity Frameworks

How the vulnerability maps against various cybersecurity frameworks

T1499.004 - Endpoint Denial of Service (Application or System Exploitation)
T1203 - Exploitation for Client Execution
T1059 - Command and Scripting Interpreter

Compliance Impact

How the submited vulnerability affects compliance

PCI DSS v3.2.1-6.5.2 - Buffer Overflows

Web Application Security Frameworks

Applicable if the issue likely affects a web application

WASC-3 - Integer Overflows