Vulnerability identifier: #VU30603

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19047

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

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

Vendor: Linux Foundation

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the mlx5_fw_fatal_reporter_dump() function in drivers/net/ethernet/mellanox/mlx5/core/health.c in the Linux kernel before 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering mlx5_crdump_collect() failures, aka CID-c7ed6d0183d5. A remote attacker can perform a denial of service attack.

Mitigation
Update to version 5.3.11.

Vulnerable software versions

Linux kernel: 5.3.1 - 5.3.10

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External links
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11
http://github.com/torvalds/linux/commit/c7ed6d0183d5ea9bc31bcaeeba4070bd62546471
http://security.netapp.com/advisory/ntap-20191205-0001/
http://usn.ubuntu.com/4225-1/

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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.