#VU102193 Double free in Linux kernel - CVE-2024-56573

Vulnerability identifier: #VU102193

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-2024-56573

CWE-ID: CWE-415

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 a double free error within the efi_handle_cmdline() function in drivers/firmware/efi/libstub/efi-stub.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/06d39d79cbd5a91a33707951ebf2512d0e759847
https://git.kernel.org/stable/c/d173aee5709bd0994d216d60589ec67f8b11376a
https://git.kernel.org/stable/c/eaafbcf0a5782ae412ca7de12ef83fc48ccea4cf

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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.