#VU102933 Improper locking in Linux kernel - CVE-2024-57894

Vulnerability identifier: #VU102933

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-2024-57894

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 sco_connect_ind() and sco_connect_cfm() functions in net/bluetooth/sco.c, within the rfcomm_run() and rfcomm_security_cfm() functions in net/bluetooth/rfcomm/core.c, within the l2cap_global_fixed_chan(), l2cap_connect_cfm() and l2cap_disconn_ind() functions in net/bluetooth/l2cap_core.c, within the iso_match() function in net/bluetooth/iso.c, within the DEFINE_RWLOCK(), hci_register_cb() and hci_unregister_cb() functions in net/bluetooth/hci_core.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/028a68886ead0764f4b26adfcaebf9f1955e76ea
https://git.kernel.org/stable/c/4a31c018bfe4de84c0741aadd2c913a2490b186d
https://git.kernel.org/stable/c/4d94f05558271654670d18c26c912da0c1c15549
https://git.kernel.org/stable/c/bef333418368c58690b501894324c09124e4614f

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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.