CVE-2022-48657: linux kernel Buffer Overflow — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: arm64: topology: fix possible overflow in amu_fie_setup() cpufreq_get_hw_max_freq() returns max frequency in kHz as *unsigned int*, while freq_inv_set_max_ratio() gets passed this frequency in Hz as 'u64'. Multiplying max frequency by 1000 can potentially result in overflow -- multiplying by 1000ULL instead should avoid that... Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-120 CWE-120

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.7 — 5.10.150
linux	linux_kernel	5.11 — 5.15.71
linux	linux_kernel	5.16 — 5.19.12

References

Advisories & Patches

https://git.kernel.org/stable/c/3c3edb82d67b2be9231174ac2af4af60d4af7549 https://git.kernel.org/stable/c/904f881b57360cf85de962d84d8614d94431f60e https://git.kernel.org/stable/c/bb6d99e27cbe6b30e4e3bbd32927fd3b0bdec6eb https://git.kernel.org/stable/c/d4955c0ad77dbc684fc716387070ac24801b8bca https://git.kernel.org/stable/c/3c3edb82d67b2be9231174ac2af4af60d4af7549 https://git.kernel.org/stable/c/904f881b57360cf85de962d84d8614d94431f60e https://git.kernel.org/stable/c/bb6d99e27cbe6b30e4e3bbd32927fd3b0bdec6eb https://git.kernel.org/stable/c/d4955c0ad77dbc684fc716387070ac24801b8bca

Frequently Asked Questions

What is CVE-2022-48657? +

In the Linux kernel, the following vulnerability has been resolved: arm64: topology: fix possible overflow in amu_fie_setup() cpufreq_get_hw_max_freq() returns max frequency in kHz as *unsigned int*, while freq_inv_set_max_ratio() gets passed this frequency in Hz as 'u64'. Multiplying max frequency by 1000 can potentially result in overflow -- multiplying by 1000ULL instead should avoid that... Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-48657? +

CVE-2022-48657 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2022-48657? +

CVE-2022-48657 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-48657? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2022-48657