What’s Vulnerable › Vulnerabilities
CVE-2021-3772
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2022-03-02 · updated 2026-06-17
- Weakness: CWE-354
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.
Affected products
- Debian Linux: 9.0, 10.0
- Linux kernel: before 5.15.0 — fixed in 5.15.0
- E-Series SANtricity OS Controller Software 11.x: 11.0, 11.0.0, 11.20, 11.25, 11.30, 11.30.5r3 (+12)
- NetApp H300S Firmware: all versions
- NetApp H410C Firmware: all versions
- NetApp H410S Firmware: all versions
- NetApp H500S Firmware: all versions
- NetApp H610C Firmware: all versions
- NetApp H610S Firmware: all versions
- NetApp H615C Firmware: all versions
- NetApp H700S Firmware: all versions
- NetApp Hci Compute Node: all versions
- NetApp Solidfire & Hci Management Node: all versions
- NetApp Solidfire & Hci Storage Node: all versions
- Oracle Communications Cloud Native Core Binding Support Function: 22.1.3
- Oracle Communications Cloud Native Core Network Exposure Function: 22.1.1
- Oracle Communications Cloud Native Core Policy: 22.2.0
- Red Hat Enterprise Linux: 8.0
How to fix
Upgrade to a fixed version: Linux kernel 5.15.0. Check the vendor advisory for mitigations.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2000694
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=32f8807a48ae55be0e76880cfe8607a18b5bb0df
- https://github.com/torvalds/linux/commit/32f8807a48ae55be0e76880cfe8607a18b5bb0df
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://security.netapp.com/advisory/ntap-20221007-0001/
- https://ubuntu.com/security/CVE-2021-3772
- https://www.debian.org/security/2022/dsa-5096
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://bugzilla.redhat.com/show_bug.cgi?id=2000694
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=32f8807a48ae55be0e76880cfe8607a18b5bb0df
- https://github.com/torvalds/linux/commit/32f8807a48ae55be0e76880cfe8607a18b5bb0df
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
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