CVE-2020-29374

Source
https://cve.org/CVERecord?id=CVE-2020-29374
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-29374.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-29374
Aliases
Downstream
Related
Published
2020-11-28T07:15:11.960Z
Modified
2026-02-06T04:59:38.618606Z
Severity
  • 3.6 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
[none]
Details

An issue was discovered in the Linux kernel before 5.7.3, related to mm/gup.c and mm/hugememory.c. The getuser_pages (aka gup) implementation, when used for a copy-on-write page, does not properly consider the semantics of read operations and therefore can grant unintended write access, aka CID-17839856fd58.

References

Affected packages

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

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
17839856fd588f4ab6b789f482ed3ffd7c403e1f

Affected versions

v2.*
v2.6.12
v2.6.12-rc2
v2.6.12-rc3
v2.6.12-rc4
v2.6.12-rc5
v2.6.12-rc6
v2.6.13
v2.6.13-rc1
v2.6.13-rc2
v2.6.13-rc3
v2.6.13-rc4
v2.6.13-rc5
v2.6.13-rc6
v2.6.13-rc7
v2.6.14
v2.6.14-rc1
v2.6.14-rc2
v2.6.14-rc3
v2.6.14-rc4
v2.6.14-rc5
v2.6.15
v2.6.15-rc1
v2.6.15-rc2
v2.6.15-rc3
v2.6.15-rc4
v2.6.15-rc5
v2.6.15-rc6
v2.6.15-rc7
v2.6.16
v2.6.16-rc1
v2.6.16-rc2
v2.6.16-rc3
v2.6.16-rc4
v2.6.16-rc5
v2.6.16-rc6
v2.6.17
v2.6.17-rc1
v2.6.17-rc2
v2.6.17-rc3
v2.6.17-rc4
v2.6.17-rc5
v2.6.17-rc6
v2.6.18
v2.6.18-rc1
v2.6.18-rc2
v2.6.18-rc3
v2.6.18-rc4
v2.6.18-rc5
v2.6.18-rc6
v2.6.18-rc7
v2.6.19
v2.6.19-rc1
v2.6.19-rc2
v2.6.19-rc3
v2.6.19-rc4
v2.6.19-rc5
v2.6.19-rc6
v2.6.20
v2.6.20-rc1
v2.6.20-rc2
v2.6.20-rc3
v2.6.20-rc4
v2.6.20-rc5
v2.6.20-rc6
v2.6.20-rc7
v2.6.21
v2.6.21-rc1
v2.6.21-rc2
v2.6.21-rc3
v2.6.21-rc4
v2.6.21-rc5
v2.6.21-rc6
v2.6.21-rc7
v2.6.22
v2.6.22-rc1
v2.6.22-rc2
v2.6.22-rc3
v2.6.22-rc4
v2.6.22-rc5
v2.6.22-rc6
v2.6.22-rc7
v2.6.23
v2.6.23-rc1
v2.6.23-rc2
v2.6.23-rc3
v2.6.23-rc4
v2.6.23-rc5
v2.6.23-rc6
v2.6.23-rc7
v2.6.23-rc8
v2.6.23-rc9
v2.6.24
v2.6.24-rc1
v2.6.24-rc2
v2.6.24-rc3
v2.6.24-rc4
v2.6.24-rc5
v2.6.24-rc6
v2.6.24-rc7
v2.6.24-rc8
v2.6.25
v2.6.25-rc1
v2.6.25-rc2
v2.6.25-rc3
v2.6.25-rc4
v2.6.25-rc5
v2.6.25-rc6
v2.6.25-rc7
v2.6.25-rc8
v2.6.25-rc9
v2.6.26
v2.6.26-rc1
v2.6.26-rc2
v2.6.26-rc3
v2.6.26-rc4
v2.6.26-rc5
v2.6.26-rc6
v2.6.26-rc7
v2.6.26-rc8
v2.6.26-rc9
v2.6.27
v2.6.27-rc1
v2.6.27-rc2
v2.6.27-rc3
v2.6.27-rc4
v2.6.27-rc5
v2.6.27-rc6
v2.6.27-rc7
v2.6.27-rc8
v2.6.27-rc9
v2.6.28
v2.6.28-rc1
v2.6.28-rc2
v2.6.28-rc3
v2.6.28-rc4
v2.6.28-rc5
v2.6.28-rc6
v2.6.28-rc7
v2.6.28-rc8
v2.6.28-rc9
v2.6.29
v2.6.29-rc1
v2.6.29-rc2
v2.6.29-rc3
v2.6.29-rc4
v2.6.29-rc5
v2.6.29-rc6
v2.6.29-rc7
v2.6.29-rc8
v2.6.30
v2.6.30-rc1
v2.6.30-rc2
v2.6.30-rc3
v2.6.30-rc4
v2.6.30-rc5
v2.6.30-rc6
v2.6.30-rc7
v2.6.30-rc8
v2.6.31
v2.6.31-rc1
v2.6.31-rc2
v2.6.31-rc3
v2.6.31-rc4
v2.6.31-rc5
v2.6.31-rc6
v2.6.31-rc7
v2.6.31-rc8
v2.6.31-rc9
v2.6.32
v2.6.32-rc1
v2.6.32-rc2
v2.6.32-rc3
v2.6.32-rc4
v2.6.32-rc5
v2.6.32-rc6
v2.6.32-rc7
v2.6.32-rc8
v2.6.33
v2.6.33-rc1
v2.6.33-rc2
v2.6.33-rc3
v2.6.33-rc4
v2.6.33-rc5
v2.6.33-rc6
v2.6.33-rc7
v2.6.33-rc8
v2.6.34
v2.6.34-rc1
v2.6.34-rc2
v2.6.34-rc3
v2.6.34-rc4
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v2.6.35
v2.6.35-rc1
v2.6.35-rc2
v2.6.35-rc3
v2.6.35-rc4
v2.6.35-rc5
v2.6.35-rc6
v2.6.36
v2.6.36-rc1
v2.6.36-rc2
v2.6.36-rc3
v2.6.36-rc4
v2.6.36-rc5
v2.6.36-rc6
v2.6.36-rc7
v2.6.36-rc8
v2.6.37
v2.6.37-rc1
v2.6.37-rc2
v2.6.37-rc3
v2.6.37-rc4
v2.6.37-rc5
v2.6.37-rc6
v2.6.37-rc7
v2.6.37-rc8
v2.6.38
v2.6.38-rc1
v2.6.38-rc2
v2.6.38-rc3
v2.6.38-rc4
v2.6.38-rc5
v2.6.38-rc6
v2.6.38-rc7
v2.6.38-rc8
v2.6.39
v2.6.39-rc1
v2.6.39-rc2
v2.6.39-rc3
v2.6.39-rc4
v2.6.39-rc5
v2.6.39-rc6
v2.6.39-rc7
v3.*
v3.0
v3.0-rc1
v3.0-rc2
v3.0-rc3
v3.0-rc4
v3.0-rc5
v3.0-rc6
v3.0-rc7
v3.1
v3.1-rc1
v3.1-rc10
v3.1-rc2
v3.1-rc3
v3.1-rc4
v3.1-rc5
v3.1-rc6
v3.1-rc7
v3.1-rc8
v3.1-rc9
v3.10
v3.10-rc1
v3.10-rc2
v3.10-rc3
v3.10-rc4
v3.10-rc5
v3.10-rc6
v3.10-rc7
v3.11
v3.11-rc1
v3.11-rc2
v3.11-rc3
v3.11-rc4
v3.11-rc5
v3.11-rc6
v3.11-rc7
v3.12
v3.12-rc1
v3.12-rc2
v3.12-rc3
v3.12-rc4
v3.12-rc5
v3.12-rc6
v3.12-rc7
v3.13
v3.13-rc1
v3.13-rc2
v3.13-rc3
v3.13-rc4
v3.13-rc5
v3.13-rc6
v3.13-rc7
v3.13-rc8
v3.14
v3.14-rc1
v3.14-rc2
v3.14-rc3
v3.14-rc4
v3.14-rc5
v3.14-rc6
v3.14-rc7
v3.14-rc8
v3.15
v3.15-rc1
v3.15-rc2
v3.15-rc3
v3.15-rc4
v3.15-rc5
v3.15-rc6
v3.15-rc7
v3.15-rc8
v3.16
v3.16-rc1
v3.16-rc2
v3.16-rc3
v3.16-rc4
v3.16-rc5
v3.16-rc6
v3.16-rc7
v3.17
v3.17-rc1
v3.17-rc2
v3.17-rc3
v3.17-rc4
v3.17-rc5
v3.17-rc6
v3.17-rc7
v3.18
v3.18-rc1
v3.18-rc2
v3.18-rc3
v3.18-rc4
v3.18-rc5
v3.18-rc6
v3.18-rc7
v3.19
v3.19-rc1
v3.19-rc2
v3.19-rc3
v3.19-rc4
v3.19-rc5
v3.19-rc6
v3.19-rc7
v3.2
v3.2-rc1
v3.2-rc2
v3.2-rc3
v3.2-rc4
v3.2-rc5
v3.2-rc6
v3.2-rc7
v3.3
v3.3-rc1
v3.3-rc2
v3.3-rc3
v3.3-rc4
v3.3-rc5
v3.3-rc6
v3.3-rc7
v3.4
v3.4-rc1
v3.4-rc2
v3.4-rc3
v3.4-rc4
v3.4-rc5
v3.4-rc6
v3.4-rc7
v3.5
v3.5-rc1
v3.5-rc2
v3.5-rc3
v3.5-rc4
v3.5-rc5
v3.5-rc6
v3.5-rc7
v3.6
v3.6-rc1
v3.6-rc2
v3.6-rc3
v3.6-rc4
v3.6-rc5
v3.6-rc6
v3.6-rc7
v3.7
v3.7-rc1
v3.7-rc2
v3.7-rc3
v3.7-rc4
v3.7-rc5
v3.7-rc6
v3.7-rc7
v3.7-rc8
v3.8
v3.8-rc1
v3.8-rc2
v3.8-rc3
v3.8-rc4
v3.8-rc5
v3.8-rc6
v3.8-rc7
v3.9
v3.9-rc1
v3.9-rc2
v3.9-rc3
v3.9-rc4
v3.9-rc5
v3.9-rc6
v3.9-rc7
v3.9-rc8
v4.*
v4.0
v4.0-rc1
v4.0-rc2
v4.0-rc3
v4.0-rc4
v4.0-rc5
v4.0-rc6
v4.0-rc7
v4.1
v4.1-rc1
v4.1-rc2
v4.1-rc3
v4.1-rc4
v4.1-rc5
v4.1-rc6
v4.1-rc7
v4.1-rc8
v4.10
v4.10-rc1
v4.10-rc2
v4.10-rc3
v4.10-rc4
v4.10-rc5
v4.10-rc6
v4.10-rc7
v4.10-rc8
v4.11
v4.11-rc1
v4.11-rc2
v4.11-rc3
v4.11-rc4
v4.11-rc5
v4.11-rc6
v4.11-rc7
v4.11-rc8
v4.12
v4.12-rc1
v4.12-rc2
v4.12-rc3
v4.12-rc4
v4.12-rc5
v4.12-rc6
v4.12-rc7
v4.13
v4.13-rc1
v4.13-rc2
v4.13-rc3
v4.13-rc4
v4.13-rc5
v4.13-rc6
v4.13-rc7
v4.14
v4.14-rc1
v4.14-rc2
v4.14-rc3
v4.14-rc4
v4.14-rc5
v4.14-rc6
v4.14-rc7
v4.14-rc8
v4.15
v4.15-rc1
v4.15-rc2
v4.15-rc3
v4.15-rc4
v4.15-rc5
v4.15-rc6
v4.15-rc7
v4.15-rc8
v4.15-rc9
v4.16
v4.16-rc1
v4.16-rc2
v4.16-rc3
v4.16-rc4
v4.16-rc5
v4.16-rc6
v4.16-rc7
v4.17
v4.17-rc1
v4.17-rc2
v4.17-rc3
v4.17-rc4
v4.17-rc5
v4.17-rc6
v4.17-rc7
v4.18
v4.18-rc1
v4.18-rc2
v4.18-rc3
v4.18-rc4
v4.18-rc5
v4.18-rc6
v4.18-rc7
v4.18-rc8
v4.19
v4.19-rc1
v4.19-rc2
v4.19-rc3
v4.19-rc4
v4.19-rc5
v4.19-rc6
v4.19-rc7
v4.19-rc8
v4.2
v4.2-rc1
v4.2-rc2
v4.2-rc3
v4.2-rc4
v4.2-rc5
v4.2-rc6
v4.2-rc7
v4.2-rc8
v4.20
v4.20-rc1
v4.20-rc2
v4.20-rc3
v4.20-rc4
v4.20-rc5
v4.20-rc6
v4.20-rc7
v4.3
v4.3-rc1
v4.3-rc2
v4.3-rc3
v4.3-rc4
v4.3-rc5
v4.3-rc6
v4.3-rc7
v4.4
v4.4-rc1
v4.4-rc2
v4.4-rc3
v4.4-rc4
v4.4-rc5
v4.4-rc6
v4.4-rc7
v4.4-rc8
v4.5
v4.5-rc1
v4.5-rc2
v4.5-rc3
v4.5-rc4
v4.5-rc5
v4.5-rc6
v4.5-rc7
v4.6
v4.6-rc1
v4.6-rc2
v4.6-rc3
v4.6-rc4
v4.6-rc5
v4.6-rc6
v4.6-rc7
v4.7
v4.7-rc1
v4.7-rc2
v4.7-rc3
v4.7-rc4
v4.7-rc5
v4.7-rc6
v4.7-rc7
v4.8
v4.8-rc1
v4.8-rc2
v4.8-rc3
v4.8-rc4
v4.8-rc5
v4.8-rc6
v4.8-rc7
v4.8-rc8
v4.9
v4.9-rc1
v4.9-rc2
v4.9-rc3
v4.9-rc4
v4.9-rc5
v4.9-rc6
v4.9-rc7
v4.9-rc8
v5.*
v5.0
v5.0-rc1
v5.0-rc2
v5.0-rc3
v5.0-rc4
v5.0-rc5
v5.0-rc6
v5.0-rc7
v5.0-rc8
v5.1
v5.1-rc1
v5.1-rc2
v5.1-rc3
v5.1-rc4
v5.1-rc5
v5.1-rc6
v5.1-rc7
v5.2
v5.2-rc1
v5.2-rc2
v5.2-rc3
v5.2-rc4
v5.2-rc5
v5.2-rc6
v5.2-rc7
v5.3
v5.3-rc1
v5.3-rc2
v5.3-rc3
v5.3-rc4
v5.3-rc5
v5.3-rc6
v5.3-rc7
v5.3-rc8
v5.4
v5.4-rc1
v5.4-rc2
v5.4-rc3
v5.4-rc4
v5.4-rc5
v5.4-rc6
v5.4-rc7
v5.4-rc8
v5.5
v5.5-rc1
v5.5-rc2
v5.5-rc3
v5.5-rc4
v5.5-rc5
v5.5-rc6
v5.5-rc7
v5.6
v5.6-rc1
v5.6-rc2
v5.6-rc3
v5.6-rc4
v5.6-rc5
v5.6-rc6
v5.6-rc7
v5.7
v5.7-rc1
v5.7-rc2
v5.7-rc3
v5.7-rc4
v5.7-rc5
v5.7-rc6
v5.7-rc7

Database specific

vanir_signatures
[
    {
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@17839856fd588f4ab6b789f482ed3ffd7c403e1f",
        "target": {
            "file": "mm/gup.c",
            "function": "internal_get_user_pages_fast"
        },
        "id": "CVE-2020-29374-290daff8",
        "signature_version": "v1",
        "digest": {
            "function_hash": "323879688725331999498444677361153014233",
            "length": 873.0
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@17839856fd588f4ab6b789f482ed3ffd7c403e1f",
        "target": {
            "file": "mm/gup.c"
        },
        "id": "CVE-2020-29374-43b86b3a",
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "174976490296946991246910277352102408256",
                "244294158023364689983675256562614999810",
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                "257952295658745104923910458787775428265",
                "278846859602014634913390169143373603383",
                "179533537749381961794230495007146899963",
                "328378694140903536589676389307498063010",
                "274432487139958405702893068273075187953",
                "214438643548237675683311928681715806787",
                "315417227101848360375116881730912800699",
                "48047593146948675454976647461453380853",
                "238598341512853016882059856721470122842",
                "43009068416818630533983324242782178614",
                "51115585563120211361192828290020388836",
                "229775904767502691676820898904917182855",
                "245788646849712757263769463415113672550",
                "209791104305673750527845675522338646552",
                "223176870461756529715843356909920811256",
                "243854175057511934298961746738395030129",
                "126230026502210687560287269242217299514",
                "84249344745785425501883823569362456573",
                "23819077534910201360806390356119395020",
                "306757330430440958120434920063734815454",
                "55032739140385669917955147191959873036",
                "75903480179494580751448343434303954466",
                "130995343249546601802277297481267068961",
                "330476163437731284196900105753432037423",
                "246081370125594904255358430383917657177",
                "50203913314268303740113016615302880666",
                "182867908146161411378661934773928993991"
            ]
        },
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@17839856fd588f4ab6b789f482ed3ffd7c403e1f",
        "target": {
            "file": "mm/gup.c",
            "function": "__get_user_pages"
        },
        "id": "CVE-2020-29374-4b58aaff",
        "signature_version": "v1",
        "digest": {
            "function_hash": "91203271834135273316609377118534290573",
            "length": 2038.0
        },
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@17839856fd588f4ab6b789f482ed3ffd7c403e1f",
        "target": {
            "file": "mm/gup.c",
            "function": "can_follow_write_pte"
        },
        "id": "CVE-2020-29374-9485517d",
        "signature_version": "v1",
        "digest": {
            "function_hash": "22854469281736808529659055724496481259",
            "length": 175.0
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@17839856fd588f4ab6b789f482ed3ffd7c403e1f",
        "target": {
            "file": "mm/huge_memory.c"
        },
        "id": "CVE-2020-29374-9fb3cfa1",
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "129349296596538685714957343908531318991",
                "237960060259730149600909533440410807404",
                "237707147744413447061047142705619213354",
                "172488912318125651845608753638689648510",
                "71703894152171452744817867738910319369",
                "14766279862144987663834380081429099604",
                "64405655513103782727341669476966651083"
            ]
        },
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@17839856fd588f4ab6b789f482ed3ffd7c403e1f",
        "target": {
            "file": "mm/huge_memory.c",
            "function": "can_follow_write_pmd"
        },
        "id": "CVE-2020-29374-d47ec2a1",
        "signature_version": "v1",
        "digest": {
            "function_hash": "22854469281736808529659055724496481259",
            "length": 175.0
        },
        "deprecated": false
    }
]
source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-29374.json"
github.com/net-snmp/net-snmp

Affected ranges

Type
GIT
Repo
https://github.com/net-snmp/net-snmp
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed

Affected versions

v3.*
v3.0
v3.0.1
v3.0.2
v3.0.2.1
v3.0.3
v3.0.4
v3.0.5
v3.0.6
v3.0.7
v3.0.7.1
v3.0.7.2
v3.1
v3.1.0.1
v3.1.1
v3.1.2
v3.1.2.1
v3.1.3
v3.2
v3.3
v3.4
v3.5
v3.6
v3.6.1
v4.*
v4.0
v4.0.1
v4.1
v4.1.1
v4.2
v5.*
v5.0
v5.0.1
v5.0.10
v5.0.10.2
v5.0.11
v5.0.11.1
v5.0.2
v5.0.3
v5.0.4
v5.0.5
v5.0.6
v5.0.7
v5.0.8
v5.0.9
v5.1
v5.1.1
v5.1.2
v5.1.3
v5.1.4
v5.1.4.1
v5.2
v5.2.1
v5.2.2
v5.2.3
v5.2.4
v5.2.4.pre1
v5.2.4.pre2
v5.2.4.pre3
v5.2.4.rc1
v5.2.4.rc2
v5.2.5
v5.2.5.pre1
v5.2.5.pre2
v5.2.5.rc1
v5.2.5.rc2
v5.2.6
v5.2.6.pre1
v5.2.6.pre2
v5.2.6.rc1
v5.2.6.rc2
v5.2.6.rc3
v5.3
v5.3.1
v5.3.2
v5.3.2.pre1
v5.3.2.rc1
v5.3.3
v5.3.3.pre1
v5.3.3.rc1
v5.3.3.rc2
v5.3.4
v5.3.4.pre1
v5.3.4.pre2
v5.3.4.rc1
v5.4
v5.4.1
v5.4.1.pre1
v5.4.1.pre2
v5.4.1.pre3
v5.4.1.rc1
v5.4.1.rc2
v5.4.1.rc3
v5.4.1.rc4
v5.4.2
v5.4.2.pre1
v5.4.2.pre2
v5.4.2.rc1
v5.4.2.rc2
v5.4.2.rc3
v5.4.3
v5.4.3.pre1
v5.4.3.pre2
v5.4.3.rc1
v5.4.3.rc2
v5.4.3.rc3
v5.4.4
v5.4.4.pre1
v5.4.4.pre2
v5.4.4.rc1
v5.5
v5.5.1
v5.5.1.rc2
v5.5.2
v5.5.2.pre1
v5.5.2.rc1
v5.5.2.rc2
v5.5.2.rc3
v5.5.pre1
v5.5.pre2
v5.5.pre3
v5.5.rc1
v5.5.rc2
v5.5.rc3
v5.6
v5.6.1
v5.6.1.pre1
v5.6.1.pre2
v5.6.1.rc1
v5.6.1.rc2
v5.6.2
v5.6.2.pre1
v5.6.2.pre2
v5.6.2.rc1
v5.6.2.rc2
v5.6.2.rc3
v5.6.pre1
v5.6.pre2
v5.6.pre3
v5.6.rc1
v5.6.rc2
v5.6.rc3
v5.7
v5.7.1
v5.7.1.pre1
v5.7.1.pre2
v5.7.1.rc1
v5.7.1.rc2
v5.7.1.rc3
v5.7.2
v5.7.2.pre1
v5.7.2.pre2
v5.7.2.pre3
v5.7.2.rc1
v5.7.2.rc2
v5.7.2.rc3
v5.7.3.pre1
v5.7.3.pre2
v5.7.3.pre3
v5.7.3.pre4
v5.7.3.pre5
v5.7.3.rc1
v5.7.3.rc2
v5.7.3.rc3
v5.7.pre1
v5.7.pre2
v5.7.rc1
v5.7.rc2
v5.7.rc3

Database specific

source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-29374.json"