StackPatch is liveSee product

Back to CVE digest
CVE-2021-27803 · cross-distro fix matrix

CVE-2021-27803: A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi Direct) provision discovery requests. It could result in denial of service or other impact (potentially execution of arbitrary code), for an attacker within radio range.

Affects 8 Linux releases across 8 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-27803 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • wpa→ fixed in2:2.9.0-21urgency: not yet assigned
    sudo apt-get install --only-upgrade -y wpa

Debian bookworm

Source: Debian Security Tracker

  • wpa→ fixed in2:2.9.0-21urgency: not yet assigned
    sudo apt-get install --only-upgrade -y wpa

Debian trixie

Source: Debian Security Tracker

  • wpa→ fixed in2:2.9.0-21urgency: not yet assigned
    sudo apt-get install --only-upgrade -y wpa

Alpine v3.20

Source: Alpine secdb

  • wpa_supplicant→ fixed in2.9-r12
    apk update && apk add --upgrade wpa_supplicant

Alpine v3.21

Source: Alpine secdb

  • wpa_supplicant→ fixed in2.9-r12
    apk update && apk add --upgrade wpa_supplicant

Alpine edge

Source: Alpine secdb

  • wpa_supplicant→ fixed in2.9-r12
    apk update && apk add --upgrade wpa_supplicant

Alpine v3.18

Source: Alpine secdb

  • wpa_supplicant→ fixed in2.9-r12
    apk update && apk add --upgrade wpa_supplicant

Alpine v3.19

Source: Alpine secdb

  • wpa_supplicant→ fixed in2.9-r12
    apk update && apk add --upgrade wpa_supplicant
Are YOU affected by CVE-2021-27803?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash
Form-based quickscan View on NVD
Continuous monitoring beats manual checking

CVE-2021-27803dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

See StackPatch ($99 lifetime)