#VU104788 Integer underflow in Linux kernel - CVE-2022-49563

Vulnerability identifier: #VU104788

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-2022-49563

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 qat_rsa_enc() and qat_rsa_dec() functions in drivers/crypto/qat/qat_common/qat_asym_algs.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/4d6d2adce08788b7667a6e58002682ea1bbf6a79
https://git.kernel.org/stable/c/9714061423b8b24b8afb31b8eb4df977c63f19c4
https://git.kernel.org/stable/c/f993321e50ba7a8ba4f5b19939e1772a921a1c42

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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.