#VU102106 NULL pointer dereference in Linux kernel - CVE-2024-56588

Vulnerability identifier: #VU102106

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-2024-56588

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 debugfs_to_reg_name_v3_hw(), debugfs_global_v3_hw_show(), debugfs_axi_v3_hw_show(), debugfs_ras_v3_hw_show(), debugfs_port_v3_hw_show(), debugfs_cq_v3_hw_show(), debugfs_dq_show_slot_v3_hw(), debugfs_iost_v3_hw_show(), debugfs_iost_cache_v3_hw_show(), debugfs_itct_v3_hw_show(), debugfs_itct_cache_v3_hw_show(), debugfs_create_files_v3_hw(), debugfs_release_v3_hw(), debugfs_snapshot_regs_v3_hw(), debugfs_bist_init_v3_hw() and debugfs_init_v3_hw() functions in drivers/scsi/hisi_sas/hisi_sas_v3_hw.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/6c55f99123075e5429850b41b06f7dfffcb708eb
https://git.kernel.org/stable/c/9f564f15f88490b484e02442dc4c4b11640ea172

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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.