#VU104243 Memory leak in Linux kernel - CVE-2022-49300

Vulnerability identifier: #VU104243

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:U/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49300

CWE-ID: CWE-401

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the nbd_alloc_config(), nbd_open(), nbd_put() and nbd_cleanup() functions in drivers/block/nbd.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/122e4adaff2439f1cc18cc7e931980fa7560df5c
https://git.kernel.org/stable/c/165cf2e0019fa6cedc75b456490c41494c34abb4
https://git.kernel.org/stable/c/2573f2375b64280be977431701ed5d33b75b9ad0
https://git.kernel.org/stable/c/2888fa41985f93ed0a6837cfbb06bcbfd7fa2314
https://git.kernel.org/stable/c/71c142f910da44421213ade601bcbd23ceae19fa
https://git.kernel.org/stable/c/8a7da4ced236ce6637fe70f14ca18e718d4bf9e9
https://git.kernel.org/stable/c/c55b2b983b0fa012942c3eb16384b2b722caa810
https://git.kernel.org/stable/c/d09525720dd5201756f698bee1076de9aefd4602

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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