#VU110680 Use-after-free in Linux kernel - CVE-2025-38003

Vulnerability identifier: #VU110680

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-2025-38003

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 bcm_proc_show(), bcm_delete_rx_op(), bcm_delete_tx_op() and bcm_rx_setup() functions in net/can/bcm.c. A local user can escalate privileges on the system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/0622846db728a5332b917c797c733e202c4620ae
https://git.kernel.org/stable/c/19f553a1ddf260da6570ed8f8d91a8c87f49b63a
https://git.kernel.org/stable/c/1f912f8484e9c4396378c39460bbea0af681f319
https://git.kernel.org/stable/c/63567ecd99a24495208dc860d50fb17440043006
https://git.kernel.org/stable/c/659701c0b954ccdb4a916a4ad59bbc16e726d42c
https://git.kernel.org/stable/c/6d7d458c41b98a5c1670cbd36f2923c37de51cf5
https://git.kernel.org/stable/c/7c9db92d5f0eadca30884af75c53d601edc512ee
https://git.kernel.org/stable/c/dac5e6249159ac255dad9781793dbe5908ac9ddb

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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.