CVE-2021-3772

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

Weakness enumeration

CWE-354

Affected software

Vendor	Product	Versions
n/a	kernel	Fixed in linux kernel v5.15 and above

References

https://bugzilla.redhat.com/show_bug.cgi?id=2000694Issue Tracking, Patch, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=32f8807a48ae55be0e76880cfe8607a18b5bb0dfMailing List, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/32f8807a48ae55be0e76880cfe8607a18b5bb0dfPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20221007-0001/Third Party Advisory
https://ubuntu.com/security/CVE-2021-3772Patch, Third Party Advisory
https://www.debian.org/security/2022/dsa-5096Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2000694Issue Tracking, Patch, Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=32f8807a48ae55be0e76880cfe8607a18b5bb0dfMailing List, Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/32f8807a48ae55be0e76880cfe8607a18b5bb0dfPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20221007-0001/Third Party Advisory
https://ubuntu.com/security/CVE-2021-3772Patch, Third Party Advisory
https://www.debian.org/security/2022/dsa-5096Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlPatch, Third Party Advisory

Timeline

Published: Mar 2, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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