Integer overflow in Linux kernel perf driver

1) Integer overflow

EUVDB-ID: #VU93060

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-2023-52797

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to integer overflow within the pmu_sbi_ovf_handler() function in drivers/perf/riscv_pmu_sbi.c. A local user can execute arbitrary code.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.5 - 6.7 rc7

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:6.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.5:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.5:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.5:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.5.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.5.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.5.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.5.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.5.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:6.5.6:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/2c86b24095fcf72cf51bc72d12e4350163b4e11d
https://git.kernel.org/stable/c/45a0de41ec383c8b7c6d442734ba3852dd2fc4a7
https://git.kernel.org/stable/c/c6e316ac05532febb0c966fa9b55f5258ed037be
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.13
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.3
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7

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.