Memory leak in Linux kernel bpf

1) Memory leak

EUVDB-ID: #VU98856

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-2024-47728

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the BPF_CALL_5() function in net/core/filter.c, within the BPF_CALL_4() function in kernel/bpf/syscall.c, within the BPF_CALL_4() function in kernel/bpf/helpers.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.1 - 6.11.1

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:6.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.1.6:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/8397bf78988f3ae9dbebb0200189a62a57264980
https://git.kernel.org/stable/c/a634fa8e480ac2423f86311a602f6295df2c8ed0
https://git.kernel.org/stable/c/599d15b6d03356a97bff7a76155c5604c42a2962
https://git.kernel.org/stable/c/594a9f5a8d2de2573a856e506f77ba7dd2cefc6a
https://git.kernel.org/stable/c/4b3786a6c5397dc220b1483d8e2f4867743e966f
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.113
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.13
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.2
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.54

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.