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CVE-2021-22600

Date: January 26, 2022

A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755

Severity Score

Related Resources (8)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755
https://security-tracker.debian.org/tracker/CVE-2021-22600
https://nvd.nist.gov/vuln/detail/CVE-2021-22600
https://www.debian.org/security/2022/dsa-5096
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-22600
https://security.netapp.com/advisory/ntap-20230110-0002/
https://www.mend.io/vulnerability-database/CVE-2021-22600

Severity Score

Weakness Type (CWE)

Double Free

CWE-415

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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