#VU94933 Use-after-free in Linux kernel - CVE-2024-42112

Vulnerability identifier: #VU94933

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-2024-42112

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 txgbe_open() and txgbe_remove() functions in drivers/net/ethernet/wangxun/txgbe/txgbe_main.c, within the wx_free_irq() and ngbe_close() functions in drivers/net/ethernet/wangxun/ngbe/ngbe_main.c, within the wx_setup_isb_resources() and wx_free_all_tx_resources() functions in drivers/net/ethernet/wangxun/libwx/wx_lib.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/efdc3f54299835ddef23bea651c753c4d467010b
https://git.kernel.org/stable/c/935124dd5883b5de68dc5a94f582480a10643dc9

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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.