#VU93433 Memory leak in Linux kernel - CVE-2022-1678

Vulnerability identifier: #VU93433

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-1678

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 DoS attack on the target system.

The vulnerability exists due memory leak within the tcp_pace_kick() function in net/ipv4/tcp_output.c caused by an improper update of sock reference in TCP pacing. A remote attacker can force the system to leak memory and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://gitee.com/anolis/cloud-kernel/commit/bed537da691b
https://bugzilla.openanolis.cn/show_bug.cgi?id=61
https://lore.kernel.org/all/20200602080425.93712-1-kerneljasonxing@gmail.com/
https://github.com/torvalds/linux/commit/0a70f118475e037732557796accd0878a00fc25a
https://anas.openanolis.cn/cves/detail/CVE-2022-1678
https://anas.openanolis.cn/errata/detail/ANSA-2022:0143
https://security.netapp.com/advisory/ntap-20220715-0001/

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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.