NULL pointer dereference in Linux kernel scsi libfc driver

1) NULL pointer dereference

EUVDB-ID: #VU90419

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-52809

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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 fc_lport_ptp_setup() function in drivers/scsi/libfc/fc_lport.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

External links

http://git.kernel.org/stable/c/930f0aaba4820d6362de4e6ed569eaf444f1ea4e
http://git.kernel.org/stable/c/77072ec41d6ab3718c3fc639bc149b8037caedfa
http://git.kernel.org/stable/c/b549acf999824d4f751ca57965700372f2f3ad00
http://git.kernel.org/stable/c/bb83f79f90e92f46466adcfd4fd264a7ae0f0f01
http://git.kernel.org/stable/c/56d78b5495ebecbb9395101f3be177cd0a52450b
http://git.kernel.org/stable/c/442fd24d7b6b29e4a9cd9225afba4142d5f522ba
http://git.kernel.org/stable/c/f6fe7261b92b21109678747f36df9fdab1e30c34
http://git.kernel.org/stable/c/6b9ecf4e1032e645873933e5b43cbb84cac19106
http://git.kernel.org/stable/c/4df105f0ce9f6f30cda4e99f577150d23f0c9c5f

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.