#VU102906 Use-after-free in Linux kernel - CVE-2024-57795

Vulnerability identifier: #VU102906

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-2024-57795

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 rxe_query_port(), rxe_enable_driver(), INIT_RDMA_OBJ_SIZE() and rxe_register_device() functions in drivers/infiniband/sw/rxe/rxe_verbs.c, within the rxe_parent_name(), rxe_net_add() and rxe_port_down() functions in drivers/infiniband/sw/rxe/rxe_net.c, within the rxe_mcast_add() function in drivers/infiniband/sw/rxe/rxe_mcast.c, within the rxe_dealloc(), rxe_init_device_param(), rxe_init_port_param() and rxe_set_mtu() functions in drivers/infiniband/sw/rxe/rxe.c. A local user can escalate privileges on the system.

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/2ac5415022d16d63d912a39a06f32f1f51140261
https://git.kernel.org/stable/c/9f6f54e6a6863131442b40e14d1792b090c7ce21

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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.