#VU106171 Use-after-free in Linux kernel - CVE-2023-52975

Vulnerability identifier: #VU106171

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-52975

CWE-ID: CWE-416

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 escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the EXPORT_SYMBOL_GPL() and iscsi_session_teardown() functions in drivers/scsi/libiscsi.c, within the iscsi_sw_tcp_session_destroy() function in drivers/scsi/iscsi_tcp.c. A local user can escalate privileges on the system.

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/17b738590b97fb3fc287289971d1519ff9b875a1
https://git.kernel.org/stable/c/6f1d64b13097e85abda0f91b5638000afc5f9a06
https://git.kernel.org/stable/c/8859687f5b242c0b057461df0a9ff51d5500783b

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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.