CVE-2025-37984

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-37984
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-37984.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-37984
Downstream
Related
Published
2025-05-20T17:09:18.321Z
Modified
2025-11-20T09:17:05.571560Z
Summary
crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP()
Details

In the Linux kernel, the following vulnerability has been resolved:

crypto: ecdsa - Harden against integer overflows in DIVROUNDUP()

Herbert notes that DIVROUNDUP() may overflow unnecessarily if an ecdsa implementation's ->key_size() callback returns an unusually large value. Herbert instead suggests (for a division by 8):

X / 8 + !!(X & 7)

Based on this formula, introduce a generic DIVROUNDUPPOW2() macro and use it in lieu of DIVROUNDUP() for ->keysize() return values.

Additionally, use the macro in eccdigitsfrombytes(), whose "nbytes" parameter is a ->keysize() return value in some instances, or a user-specified ASN.1 length in the case of ecdsagetsignature_rs().

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
55779f26eab9af12474a447001bd17070f055712
Fixed
f02f0218be412cff1c844addf58e002071be298b
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
c6ab5c915da460c0397960af3c308386c3f3247b
Fixed
f2133b849ff273abddb6da622daddd8f6f6fa448
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
c6ab5c915da460c0397960af3c308386c3f3247b
Fixed
921b8167f10708e38080f84e195cdc68a7a561f1
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
c6ab5c915da460c0397960af3c308386c3f3247b
Fixed
b16510a530d1e6ab9683f04f8fb34f2e0f538275

Affected versions

v6.*

v6.10
v6.10-rc1
v6.10-rc2
v6.10-rc3
v6.10-rc4
v6.10-rc5
v6.10-rc6
v6.10-rc7
v6.11
v6.11-rc1
v6.11-rc2
v6.11-rc3
v6.11-rc4
v6.11-rc5
v6.11-rc6
v6.11-rc7
v6.12
v6.12-rc1
v6.12-rc2
v6.12-rc3
v6.12-rc4
v6.12-rc5
v6.12-rc6
v6.12-rc7
v6.12.1
v6.12.10
v6.12.11
v6.12.12
v6.12.13
v6.12.14
v6.12.15
v6.12.16
v6.12.17
v6.12.18
v6.12.19
v6.12.2
v6.12.20
v6.12.21
v6.12.22
v6.12.23
v6.12.24
v6.12.25
v6.12.26
v6.12.27
v6.12.28
v6.12.29
v6.12.3
v6.12.30
v6.12.31
v6.12.32
v6.12.33
v6.12.34
v6.12.35
v6.12.36
v6.12.37
v6.12.38
v6.12.4
v6.12.5
v6.12.6
v6.12.7
v6.12.8
v6.12.9
v6.13
v6.13-rc1
v6.13-rc2
v6.13-rc3
v6.13-rc4
v6.13-rc5
v6.13-rc6
v6.13-rc7
v6.14
v6.14-rc1
v6.14-rc2
v6.14-rc3
v6.14-rc4
v6.14-rc5
v6.14-rc6
v6.14-rc7
v6.14.1
v6.14.2
v6.14.3
v6.14.4
v6.6.70
v6.6.71
v6.6.72
v6.6.73
v6.6.74
v6.6.75
v6.6.76
v6.6.77
v6.6.78
v6.6.79
v6.6.80
v6.6.81
v6.6.82
v6.6.83
v6.6.84
v6.6.85
v6.6.86
v6.6.87
v6.6.88
v6.6.89
v6.6.90
v6.6.91
v6.6.92
v6.6.93
v6.6.94
v6.6.95
v6.6.96
v6.6.97
v6.6.98
v6.9
v6.9-rc2
v6.9-rc3
v6.9-rc4
v6.9-rc5
v6.9-rc6
v6.9-rc7

Database specific

vanir_signatures

[
    {
        "deprecated": false,
        "target": {
            "file": "crypto/ecdsa-x962.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "270000581558671763067741277709568159676",
                "169664242795572586907823218623278822223",
                "126069523984375130036044033889597364407",
                "116020069328902973655859025662142683289",
                "94070439216394703545304698078276953146"
            ]
        },
        "id": "CVE-2025-37984-07732060",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@921b8167f10708e38080f84e195cdc68a7a561f1",
        "signature_version": "v1"
    },
    {
        "deprecated": false,
        "target": {
            "file": "include/linux/math.h"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "185812302089738440058533766033728802953",
                "107694091269300847339644677966162115956",
                "13202679320205051698395579770095778479"
            ]
        },
        "id": "CVE-2025-37984-3359bbfa",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@f02f0218be412cff1c844addf58e002071be298b",
        "signature_version": "v1"
    },
    {
        "deprecated": false,
        "target": {
            "file": "crypto/ecdsa-p1363.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "84616244910215774703135745582984899812",
                "161494750085727599808172647597546942969",
                "321714159738246509024660537551772837601",
                "175602005505843108282600093497973120908"
            ]
        },
        "id": "CVE-2025-37984-5202e180",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b16510a530d1e6ab9683f04f8fb34f2e0f538275",
        "signature_version": "v1"
    },
    {
        "deprecated": false,
        "target": {
            "file": "crypto/ecdsa-p1363.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "84616244910215774703135745582984899812",
                "161494750085727599808172647597546942969",
                "321714159738246509024660537551772837601",
                "175602005505843108282600093497973120908"
            ]
        },
        "id": "CVE-2025-37984-734fd5da",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@921b8167f10708e38080f84e195cdc68a7a561f1",
        "signature_version": "v1"
    },
    {
        "deprecated": false,
        "target": {
            "file": "crypto/ecc.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "95162356367249421050510726849864677666",
                "159844448165053481520908036026567722529",
                "250934674690415733349873319698278941561",
                "268580398651744937458180587533171268015"
            ]
        },
        "id": "CVE-2025-37984-7812e7a8",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@921b8167f10708e38080f84e195cdc68a7a561f1",
        "signature_version": "v1"
    },
    {
        "deprecated": false,
        "target": {
            "file": "include/linux/math.h"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "185812302089738440058533766033728802953",
                "107694091269300847339644677966162115956",
                "13202679320205051698395579770095778479"
            ]
        },
        "id": "CVE-2025-37984-8268b45b",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b16510a530d1e6ab9683f04f8fb34f2e0f538275",
        "signature_version": "v1"
    },
    {
        "deprecated": false,
        "target": {
            "file": "crypto/ecdsa-x962.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "270000581558671763067741277709568159676",
                "169664242795572586907823218623278822223",
                "126069523984375130036044033889597364407",
                "116020069328902973655859025662142683289",
                "94070439216394703545304698078276953146"
            ]
        },
        "id": "CVE-2025-37984-994b5f35",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b16510a530d1e6ab9683f04f8fb34f2e0f538275",
        "signature_version": "v1"
    },
    {
        "deprecated": false,
        "target": {
            "file": "include/linux/math.h"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "185812302089738440058533766033728802953",
                "107694091269300847339644677966162115956",
                "13202679320205051698395579770095778479"
            ]
        },
        "id": "CVE-2025-37984-a38aa80e",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@921b8167f10708e38080f84e195cdc68a7a561f1",
        "signature_version": "v1"
    },
    {
        "deprecated": false,
        "target": {
            "file": "crypto/ecc.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "95162356367249421050510726849864677666",
                "159844448165053481520908036026567722529",
                "250934674690415733349873319698278941561",
                "268580398651744937458180587533171268015"
            ]
        },
        "id": "CVE-2025-37984-ab6b0fb3",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@f02f0218be412cff1c844addf58e002071be298b",
        "signature_version": "v1"
    },
    {
        "deprecated": false,
        "target": {
            "file": "crypto/ecc.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "95162356367249421050510726849864677666",
                "159844448165053481520908036026567722529",
                "250934674690415733349873319698278941561",
                "268580398651744937458180587533171268015"
            ]
        },
        "id": "CVE-2025-37984-cc0e55f2",
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b16510a530d1e6ab9683f04f8fb34f2e0f538275",
        "signature_version": "v1"
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.6.99
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.39
Type
ECOSYSTEM
Events
Introduced
6.10.0
Fixed
6.14.5