CVE-2022-49451: linux kernel Integer Overflow — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix list protocols enumeration in the base protocol While enumerating protocols implemented by the SCMI platform using BASE_DISCOVER_LIST_PROTOCOLS, the number of returned protocols is currently validated in an improper way since the check employs a sum between unsigned integers that could overflow and cause the check itself to be silently bypassed if the returned value 'loop_num_ret' is big enough. Fix the validation avoiding the addition.

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CVSS v3.1 Score

5.5

MEDIUM

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

Weakness Type (CWE)

CWE-190 Integer Overflow

Affected Products

Vendor	Product	Versions
linux	linux_kernel	4.17 — 4.19.247
linux	linux_kernel	4.20 — 5.4.198
linux	linux_kernel	5.5 — 5.10.121
linux	linux_kernel	5.11 — 5.15.46
linux	linux_kernel	5.16 — 5.17.14
linux	linux_kernel	5.18 — 5.18.3

References

Advisories & Patches

https://git.kernel.org/stable/c/1052f22e127d0c34c3387bb389424ba1c61491ff https://git.kernel.org/stable/c/2ccfcd7a09c826516edcfe464b05071961aada3f https://git.kernel.org/stable/c/444a2d27fe9867d0da4b28fc45b793f32e099ab8 https://git.kernel.org/stable/c/6e7978695f4a6cbd83616b5a702b77fa2087b247 https://git.kernel.org/stable/c/8009120e0354a67068e920eb10dce532391361d0 https://git.kernel.org/stable/c/98342148a8cd242855d7e257f298c966c96dba9f https://git.kernel.org/stable/c/b0e4bafac8963c2d85ee18d3d01f393735acceec

Frequently Asked Questions

What is CVE-2022-49451? +

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix list protocols enumeration in the base protocol While enumerating protocols implemented by the SCMI platform using BASE_DISCOVER_LIST_PROTOCOLS, the number of returned protocols is currently validated in an improper way since the check employs a sum between unsigned integers that could overflow and cause the check itself to be silently bypassed if the returned value 'loop_num_ret' is big enough. Fix the validation avoiding the addition. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49451? +

CVE-2022-49451 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-49451? +

CVE-2022-49451 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-2022-49451? +

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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