Vulnerability identifier: #VU61098

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3655

CWE-ID: CWE-909

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor:

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to missing initialization of resource in the Linux kernel when processing inbound SCTP packets. A remote attacker can send specially crafted SCTP packets to the system and force the kernel to read uninitialized memory.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://bugzilla.redhat.com/show_bug.cgi?id=1984024
http://lists.debian.org/debian-lts-announce/2021/10/msg00010.html
http://lists.debian.org/debian-lts-announce/2021/12/msg00012.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.