CVE-2023-49100

Trusted Firmware-A (TF-A) before 2.10 has a potential read out-of-bounds in the SDEI service. The input parameter passed in register x1 is not validated well enough in the function sdeiinterruptbind. The parameter is passed to a call to platicgetinterrupttype. It can be any arbitrary value passing checks in the function platicis_sgi. A compromised Normal World (Linux kernel) can enable a root-privileged attacker to issue arbitrary SMC calls. Using this primitive, he can control the content of registers x0 through x6, which are used to send parameters to TF-A. Out-of-bounds addresses can be read in the context of TF-A (EL3). Because the read value is never returned to non-secure memory or in registers, no leak is possible. An attacker can still crash TF-A, however.

Database specific

{
    "unresolved_ranges": [
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "introduced": "x0"
                },
                {
                    "fixed": "x6"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49100.json",
    "cna_assigner": "mitre"
}

References

CVE-2023-49100

Affected packages