A flaw was found in the Linux kernel's implementation of string matching within a packet. A privileged user (with root or CAP_NET_ADMIN) when inserting iptables rules could insert a rule which can panic the system. Kernel before kernel 5.5-rc1 is affected.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-2557-1 linux-4.19 security update
Debian DSA Debian DSA DSA-4843-1 linux security update
EUVD EUVD EUVD-2021-7634 A flaw was found in the Linux kernel's implementation of string matching within a packet. A privileged user (with root or CAP_NET_ADMIN) when inserting iptables rules could insert a rule which can panic the system. Kernel before kernel 5.5-rc1 is affected.
Ubuntu USN Ubuntu USN USN-4750-1 Linux kernel vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-03T17:30:07.528Z

Reserved: 2020-12-17T00:00:00

Link: CVE-2021-20177

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-05-26T21:15:08.157

Modified: 2024-11-21T05:46:04.423

Link: CVE-2021-20177

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-10-22T14:00:00Z

Links: CVE-2021-20177 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses