#VU98963 NULL pointer dereference in Linux kernel - CVE-2024-49891

Vulnerability identifier: #VU98963

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-2024-49891

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 lpfc_sli_flush_io_rings() function in drivers/scsi/lpfc/lpfc_sli.c, within the lpfc_abort_handler() function in drivers/scsi/lpfc/lpfc_scsi.c, within the lpfc_dev_loss_tmo_callbk() function in drivers/scsi/lpfc/lpfc_hbadisc.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/99a801e2fca39a6f31e543fc3383058a8955896f
https://git.kernel.org/stable/c/fd665c8dbdb19548965b0ae80c490de00e906366
https://git.kernel.org/stable/c/2be1d4f11944cd6283cb97268b3e17c4424945ca

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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.