#VU102068 Use-after-free in Linux kernel - CVE-2024-53232

Vulnerability identifier: #VU102068

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-53232

CWE-ID: CWE-416

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 escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the calc_rtx(), s390_domain_free(), s390_iommu_attach_device(), s390_iommu_probe_device(), s390_iommu_unmap_pages() and s390_iommu_init() functions in drivers/iommu/s390-iommu.c, within the pci_fmb_show() function in arch/s390/pci/pci_debug.c, within the zpci_fmb_enable_device() function in arch/s390/pci/pci.c. A local user can escalate privileges on the system.

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/3be34fa1cdbf180c1a948cfededfdf2cdc497199
https://git.kernel.org/stable/c/bd89d94f3ea6fdaee983cbc69226a00b9bde6d59
https://git.kernel.org/stable/c/ecda483339a5151e3ca30d6b82691ef6f1d17912

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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.