PT-2021-2346 · Unknown+7 · Wpa Supplicant+7

Jouni Malinen · Published 2021-02-25 · Updated 2025-12-18 · CVE-2021-27803

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions wpa supplicant versions prior to 2.10

Description A vulnerability in the p2p/p2p pd.c component of wpa supplicant is related to resource release errors. Exploitation of this issue could allow a remote attacker to cause a denial of service or potentially execute arbitrary code. The attacker must be within radio range to send specially crafted Wi-Fi Direct provision discovery requests.

Recommendations For versions prior to 2.10, update to version 2.10 or later to resolve the issue. As a temporary workaround, consider restricting access to Wi-Fi Direct features until the update is applied.

Fix

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

ALT-PU-2021-1414

ALT-PU-2021-1437

ALT-PU-2021-1466

ALT-PU-2022-1160

ALT-PU-2022-1927

ALT-PU-2023-1833

AZL-6973

BDU:2021-01584

CESA-2021_0808

CESA-2021_0809

CVE-2021-27803

DLA-2581-1

DSA-4898-1

MGASA-2021-0095

OESA-2021-1133

OPENSUSE-SU-2021:0404-1

OPENSUSE-SU-2021_0404-1

OPENSUSE-SU-2024:11515-1

RHSA-2021:0808

RHSA-2021:0809

RHSA-2021:0816

RHSA-2021:0818

RHSA-2021_0808

RHSA-2021_0809

SUSE-SU-2021:0720-1

SUSE-SU-2021:0721-1

SUSE-SU-2021:0745-1

SUSE-SU-2021_0720-1

SUSE-SU-2021_0721-1

SUSE-SU-2021_0745-1

USN-4757-1

USN-4757-2

Affected Products

Alt Linux

Astra Linux

Centos

Linuxmint

Red Hat

Suse

Ubuntu

Wpa Supplicant

References · 81

• https://osv.dev/vulnerability/openSUSE-SU-2024:11515-1 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2021-27803 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2581-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4757-2 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01584 · Security Note
• https://osv.dev/vulnerability/USN-4757-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2021-0808.html · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:0404-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:0720-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2021-0095 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-27803 · Security Note
• https://osv.dev/vulnerability/USN-4757-2 · Vendor Advisory
• https://w1.fi/security/2021-1/0001-P2P-Fix-a-corner-case-in-peer-addition-based-on-PD-R.patch · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-27803 · Security Note
• https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txt · Vendor Advisory