CVE-2025-9231

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2025-9231
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-9231.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-9231
Downstream
Related
Published
2025-09-30T13:17:12.007Z
Modified
2026-06-18T17:54:12.247268Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS Calculator
Summary
Timing side-channel in SM2 algorithm on 64 bit ARM
Details

Issue summary: A timing side-channel which could potentially allow remote recovery of the private key exists in the SM2 algorithm implementation on 64 bit ARM platforms.

Impact summary: A timing side-channel in SM2 signature computations on 64 bit ARM platforms could allow recovering the private key by an attacker..

While remote key recovery over a network was not attempted by the reporter, timing measurements revealed a timing signal which may allow such an attack.

OpenSSL does not directly support certificates with SM2 keys in TLS, and so this CVE is not relevant in most TLS contexts. However, given that it is possible to add support for such certificates via a custom provider, coupled with the fact that in such a custom provider context the private key may be recoverable via remote timing measurements, we consider this to be a Moderate severity issue.

The FIPS modules in 3.5, 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this issue, as SM2 is not an approved algorithm.

Database specific 
{
    "cna_assigner": "openssl",
    "cwe_ids": [
        "CWE-385"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9231.json"
}
References

Affected packages

Git / github.com/openssl/openssl

Affected ranges

Type
GIT
Repo
https://github.com/openssl/openssl
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Introduced
636dfadc70ce26f2473870570bfd9ec352806b1d
Introduced
98acb6b02839c609ef5b837794e08d906d965335
Introduced
4cb31128b5790819dfeea2739fbde265f71a10a2
Introduced
cf2877791ce7508684109664f467c9e40987692f
Fixed
c1eeb9406b6142148f267594197d853403d10208
Fixed
474f0e27bc6b23bbc3ae18543ede9315adfddf1a
Fixed
f10934c46fef092d04788f01fd0a4eafe3ef715f
Fixed
86874e2ee18ccc14aa518bffa178ebada9c66c86
Fixed
567f64386e43683888212226824b6a179885a0fe
Fixed
cba616c26ac8e7b37de5e77762e505ba5ca51698
Fixed
eed5adc9f969d77c94f213767acbb41ff923b6f4
Fixed
fc47a2ec078912b3e914fab5734535e76c4820c2
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "3.5.0"
        },
        {
            "fixed": "3.5.4"
        },
        {
            "introduced": "3.4.0"
        },
        {
            "fixed": "3.4.3"
        },
        {
            "introduced": "3.3.0"
        },
        {
            "fixed": "3.3.5"
        },
        {
            "introduced": "3.2.0"
        },
        {
            "fixed": "3.2.6"
        }
    ]
}

Affected versions

openssl-3.*
openssl-3.2.0
openssl-3.2.1
openssl-3.2.2
openssl-3.2.3
openssl-3.2.4
openssl-3.2.5
openssl-3.3.0
openssl-3.3.1
openssl-3.3.2
openssl-3.3.3
openssl-3.3.4
openssl-3.4.0
openssl-3.4.1
openssl-3.4.2
openssl-3.5.0
openssl-3.5.1
openssl-3.5.2
openssl-3.5.3

Database specific

vanir_signatures 
[
    {
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/eed5adc9f969d77c94f213767acbb41ff923b6f4",
        "target": {
            "file": "crypto/ec/ecp_sm2p256.c",
            "function": "EC_GFp_sm2p256_method"
        },
        "id": "CVE-2025-9231-0a173897",
        "digest": {
            "function_hash": "228975674964673153327344367611195603813",
            "length": 1413.0
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/fc47a2ec078912b3e914fab5734535e76c4820c2",
        "target": {
            "file": "crypto/ec/ecp_sm2p256.c"
        },
        "id": "CVE-2025-9231-1c441952",
        "digest": {
            "line_hashes": [
                "246421341653923193586783108578436995594",
                "165531523737299840919921065590355522697",
                "18229344054124728427593867306425443651",
                "24266715163726303181486152260821359716",
                "7395405381188139375821676029670613492",
                "45412430000582672495337306435173847003",
                "235876622437882869915650874338137663887",
                "235876622437882869915650874338137663887",
                "186708629684641006598401669327723483366",
                "263307798859667681852006462056982872272",
                "204829054929762304879144137237214260511",
                "228312666475207087463597735904232822597"
            ],
            "threshold": 0.9
        },
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/cba616c26ac8e7b37de5e77762e505ba5ca51698",
        "target": {
            "file": "crypto/ec/ecp_sm2p256.c",
            "function": "EC_GFp_sm2p256_method"
        },
        "id": "CVE-2025-9231-9e687c2e",
        "digest": {
            "function_hash": "228975674964673153327344367611195603813",
            "length": 1413.0
        },
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/567f64386e43683888212226824b6a179885a0fe",
        "target": {
            "file": "crypto/ec/ecp_sm2p256.c",
            "function": "EC_GFp_sm2p256_method"
        },
        "id": "CVE-2025-9231-c06aeee8",
        "digest": {
            "function_hash": "228975674964673153327344367611195603813",
            "length": 1413.0
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/eed5adc9f969d77c94f213767acbb41ff923b6f4",
        "target": {
            "file": "crypto/ec/ecp_sm2p256.c"
        },
        "id": "CVE-2025-9231-cea2ed68",
        "digest": {
            "line_hashes": [
                "246421341653923193586783108578436995594",
                "165531523737299840919921065590355522697",
                "18229344054124728427593867306425443651",
                "24266715163726303181486152260821359716",
                "7395405381188139375821676029670613492",
                "45412430000582672495337306435173847003",
                "235876622437882869915650874338137663887",
                "235876622437882869915650874338137663887",
                "186708629684641006598401669327723483366",
                "263307798859667681852006462056982872272",
                "204829054929762304879144137237214260511",
                "228312666475207087463597735904232822597"
            ],
            "threshold": 0.9
        },
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/fc47a2ec078912b3e914fab5734535e76c4820c2",
        "target": {
            "file": "crypto/ec/ecp_sm2p256.c",
            "function": "EC_GFp_sm2p256_method"
        },
        "id": "CVE-2025-9231-e50bd482",
        "digest": {
            "function_hash": "228975674964673153327344367611195603813",
            "length": 1413.0
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/cba616c26ac8e7b37de5e77762e505ba5ca51698",
        "target": {
            "file": "crypto/ec/ecp_sm2p256.c"
        },
        "id": "CVE-2025-9231-e65977eb",
        "digest": {
            "line_hashes": [
                "246421341653923193586783108578436995594",
                "165531523737299840919921065590355522697",
                "18229344054124728427593867306425443651",
                "24266715163726303181486152260821359716",
                "7395405381188139375821676029670613492",
                "45412430000582672495337306435173847003",
                "235876622437882869915650874338137663887",
                "235876622437882869915650874338137663887",
                "186708629684641006598401669327723483366",
                "263307798859667681852006462056982872272",
                "204829054929762304879144137237214260511",
                "228312666475207087463597735904232822597"
            ],
            "threshold": 0.9
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/openssl/openssl/commit/567f64386e43683888212226824b6a179885a0fe",
        "target": {
            "file": "crypto/ec/ecp_sm2p256.c"
        },
        "id": "CVE-2025-9231-f8a11680",
        "digest": {
            "line_hashes": [
                "246421341653923193586783108578436995594",
                "165531523737299840919921065590355522697",
                "18229344054124728427593867306425443651",
                "24266715163726303181486152260821359716",
                "7395405381188139375821676029670613492",
                "45412430000582672495337306435173847003",
                "235876622437882869915650874338137663887",
                "235876622437882869915650874338137663887",
                "186708629684641006598401669327723483366",
                "263307798859667681852006462056982872272",
                "204829054929762304879144137237214260511",
                "228312666475207087463597735904232822597"
            ],
            "threshold": 0.9
        },
        "deprecated": false
    }
]
source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-9231.json"
vanir_signatures_modified 
"2026-06-18T17:54:12Z"