#VU102171 Improper locking in Linux kernel - CVE-2024-56559

Vulnerability identifier: #VU102171

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-2024-56559

CWE-ID: CWE-667

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 improper locking within the decay_va_pool_node() and purge_vmap_node() functions in mm/vmalloc.c, within the kasan_depopulate_vmalloc_pte() and kasan_release_vmalloc() functions in mm/kasan/shadow.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/9e9e085effe9b7e342138fde3cf8577d22509932
https://git.kernel.org/stable/c/f9a18889aad9b4c19c6c4550c67ad4f9ed2a354f

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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.