#VU91242 NULL pointer dereference in Linux kernel - CVE-2023-52513

Vulnerability identifier: #VU91242

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-2023-52513

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 siw_accept_newconn(), siw_cm_work_handler() and siw_cm_llp_data_ready() functions in drivers/infiniband/sw/siw/siw_cm.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/6e26812e289b374c17677d238164a5a8f5770594
https://git.kernel.org/stable/c/0d520cdb0cd095eac5d00078dfd318408c9b5eed
https://git.kernel.org/stable/c/81b7bf367eea795d259d0261710c6a89f548844d
https://git.kernel.org/stable/c/5cf38e638e5d01b68f9133968a85e8b3fd1ecf2f
https://git.kernel.org/stable/c/eeafc50a77f6a783c2c44e7ec3674a7b693e06f8
https://git.kernel.org/stable/c/53a3f777049771496f791504e7dc8ef017cba590

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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.