#VU104786 Integer underflow in Linux kernel - CVE-2022-49278

Vulnerability identifier: #VU104786

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-2022-49278

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 rproc_coredump_write() function in drivers/remoteproc/remoteproc_debugfs.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/11572dad9fbadbd9269a2550f7e236b5b8c2d80c
https://git.kernel.org/stable/c/34afac3c75fa08d6fabbab4c93f0a90618afaaa6
https://git.kernel.org/stable/c/a8c3e53517985d69040a1b36a269e85f99cf0cea
https://git.kernel.org/stable/c/b97b305656a7013690e7b6e310f0e827e0bbff90
https://git.kernel.org/stable/c/f89672cc3681952f2d06314981a6b45f8b0045d1

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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.