#VU90591 NULL pointer dereference in Linux kernel - CVE-2024-26745

Vulnerability identifier: #VU90591

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-2024-26745

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 iommu_table_setparms(), pci_dma_find(), pci_dma_bus_setup_pSeriesLP(), find_existing_ddw_windows_named() and pci_dma_dev_setup_pSeriesLP() functions in arch/powerpc/platforms/pseries/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/7eb95e0af5c9c2e6fad50356eaf32d216d0e7bc3
https://git.kernel.org/stable/c/d4d1e4b1513d975961de7bb4f75e450a92d65ebf
https://git.kernel.org/stable/c/5da6d306f315344af1ca2eff4bd9b10b130f0c28
https://git.kernel.org/stable/c/09a3c1e46142199adcee372a420b024b4fc61051

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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.