#VU93030 NULL pointer dereference in Linux kernel - CVE-2024-36489

Vulnerability identifier: #VU93030

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-36489

CWE-ID: CWE-476

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 NULL pointer dereference within the tls_ctx_create() function in net/tls/tls_main.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/d72e126e9a36d3d33889829df8fc90100bb0e071
https://git.kernel.org/stable/c/2c260a24cf1c4d30ea3646124f766ee46169280b
https://git.kernel.org/stable/c/335c8f1566d8e44c384d16b450a18554896d4e8b
https://git.kernel.org/stable/c/ab67c2fd3d070a21914d0c31319d3858ab4e199c
https://git.kernel.org/stable/c/ef21007a7b581c7fe64d5a10c320880a033c837b
https://git.kernel.org/stable/c/91e61dd7a0af660408e87372d8330ceb218be302

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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.