#VU90149 Use-after-free in Linux kernel - CVE-2024-35864

Vulnerability identifier: #VU90149

Vulnerability risk: Medium

CVSSv4.0: 4.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-35864

CWE-ID: CWE-416

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the smb2_is_valid_lease_break() function in fs/smb/client/smb2misc.c. A remote non-authenticated attacker can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.1 - 6.1.84, 6.6 - 6.6.25, 6.8 - 6.8.4

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External links
https://git.kernel.org/stable/c/c868cabdf6fdd61bea54532271f4708254e57fc5
https://git.kernel.org/stable/c/f92739fdd4522c4291277136399353d7c341fae4
https://git.kernel.org/stable/c/a8344e2b69bde63f713b0aa796d70dbeadffddfb
https://git.kernel.org/stable/c/705c76fbf726c7a2f6ff9143d4013b18daaaebf1
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.85
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.26
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8.5

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?