What’s Vulnerable › Vulnerabilities

CVE-2022-49451: firmware: arm_scmi: Fix list protocols enumeration in the base protocol

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-08-04
• Weakness: CWE-190

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.

Affected products

• Linux kernel: from 4.17 before 4.19.247; from 4.20 before 5.4.198; from 5.5 before 5.10.121; from 5.11 before 5.15.46; from 5.16 before 5.17.14; from 5.18 before 5.18.3 — fixed in 4.19.247, 5.10.121, 5.15.46, 5.17.14, 5.18.3, 5.4.198

How to fix

Upgrade to a fixed version: Linux kernel 4.19.247, 5.10.121, 5.15.46, 5.17.14. Check the vendor advisory for mitigations.

References

• 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

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