#VU101987 Memory leak in Linux kernel - CVE-2024-56712

Vulnerability identifier: #VU101987

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-2024-56712

CWE-ID: CWE-401

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 memory leak within the check_memfd_seals(), export_udmabuf() and udmabuf_create() functions in drivers/dma-buf/udmabuf.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.12, 6.12.1, 6.12.2, 6.12.3, 6.12.4, 6.12.5, 6.12.6

---

External links
https://git.kernel.org/stable/c/c9fc8428d4255c2128da9c4d5cd92e554d0150cf
https://git.kernel.org/stable/c/f49856f525acd5bef52ae28b7da2e001bbe7439e
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.7
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13

---

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.