#VU90607 NULL pointer dereference in Linux kernel - CVE-2024-26713

Vulnerability identifier: #VU90607

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-2024-26713

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 init_phb_dynamic() and remove_phb_dynamic() functions in arch/powerpc/platforms/pseries/pci_dlpar.c, within the ppc_iommu_register_device() and spapr_tce_setup_phb_iommus_initcall() functions in arch/powerpc/kernel/iommu.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/9978d5b744e0227afe19e3bcb4c5f75442dde753
https://git.kernel.org/stable/c/d4f762d6403f7419de90d7749fa83dd92ffb0e1d
https://git.kernel.org/stable/c/ed8b94f6e0acd652ce69bd69d678a0c769172df8

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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.