#VU102210 Integer underflow in Linux kernel - CVE-2024-56645

Vulnerability identifier: #VU102210

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-2024-56645

CWE-ID: CWE-191

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 execute arbitrary code.

The vulnerability exists due to integer underflow within the j1939_session_new() function in net/can/j1939/transport.c. A local user can execute arbitrary code.

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/224e606a8d8e8c7db94036272c47a37455667313
https://git.kernel.org/stable/c/4199dd78a59896e091d3a7a05a77451aa7fd724d
https://git.kernel.org/stable/c/426d94815e12b6bdb9a75af294fbbafb9301601d
https://git.kernel.org/stable/c/68fceb143b635cdc59fed3896d5910aff38f345e
https://git.kernel.org/stable/c/a8c695005bfe6569acd73d777ca298ddddd66105
https://git.kernel.org/stable/c/b3282c2bebeeb82ceec492ee4972f51ee7a4a132
https://git.kernel.org/stable/c/f117cba69cbbd496babb3defcdf440df4fd6fe14

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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.