CVE-2021-47420 - Vulnerability Details

Vendors	Products
Linux	Linux Kernel

Link	Providers
https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb
https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516
https://lore.kernel.org/linux-cve-announce/2024052155-CVE-2021-47420-939e@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47420
https://www.cve.org/CVERecord?id=CVE-2021-47420

Type	Values Removed	Values Added
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:5.15:rc1:::::: cpe:2.3:o:linux:linux_kernel:5.15:rc2:::::: cpe:2.3:o:linux:linux_kernel:5.15:rc3:::::: cpe:2.3:o:linux:linux_kernel:5.15:rc4::::::
Vendors & Products		Linux Linux linux Kernel
Metrics	cvssV3_1 `{'score': 2.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L'}`	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}`

Type	Values Removed	Values Added
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value : In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix a potential ttm->sg memory leak Memory is allocated for ttm->sg by kmalloc in kfd_mem_dmamap_userptr, but isn't freed by kfree in kfd_mem_dmaunmap_userptr. Free it! (string)

}

1 : { »

lang : es (string)

value : En el kernel de Linux, se resolvió la siguiente vulnerabilidad: drm/amdkfd: soluciona una posible pérdida de memoria de ttm->sg. La memoria se asigna para ttm->sg mediante kmalloc en kfd_mem_dmamap_userptr, pero kfree no la libera en kfd_mem_dmaunmap_userptr. ¡Libérala! (string)

}

]

id : CVE-2021-47420 (string)

lastModified : 2024-12-30T19:37:04.973 (string)

metrics : { »

cvssMetricV31 : [ »

0 : { »

cvssData : { »

attackComplexity : LOW (string)

attackVector : LOCAL (string)

availabilityImpact : HIGH (string)

baseScore : 5.5 (number)

baseSeverity : MEDIUM (string)

confidentialityImpact : NONE (string)

integrityImpact : NONE (string)

privilegesRequired : LOW (string)

scope : UNCHANGED (string)

userInteraction : NONE (string)

vectorString : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (string)

version : 3.1 (string)

}

exploitabilityScore : 1.8 (number)

impactScore : 3.6 (number)

source : nvd@nist.gov (string)

type : Primary (string)

}

]

}

published : 2024-05-21T15:15:27.450 (string)

references : [ »

0 : { »

source : 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (string)

tags : [ »

0 : Patch (string)

]

url : https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb (string)

}

1 : { »

source : 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (string)

tags : [ »

0 : Patch (string)

]

url : https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516 (string)

}

2 : { »

source : af854a3a-2127-422b-91ae-364da2661108 (string)

tags : [ »

0 : Patch (string)

]

url : https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb (string)

}

3 : { »

source : af854a3a-2127-422b-91ae-364da2661108 (string)

tags : [ »

0 : Patch (string)

]

url : https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516 (string)

}

]

sourceIdentifier : 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (string)

vulnStatus : Analyzed (string)

weaknesses : [ »

0 : { »

description : [ »

0 : { »

lang : en (string)

value : CWE-401 (string)

}

]

source : nvd@nist.gov (string)

type : Primary (string)

}

]

}

Show plain JSON

{"bugzilla": {"description": "kernel: drm/amdkfd: fix a potential ttm-&gt;sg memory leak", "id": "2282313", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282313"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-401", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amdkfd: fix a potential ttm->sg memory leak\nMemory is allocated for ttm->sg by kmalloc in kfd_mem_dmamap_userptr,\nbut isn't freed by kfree in kfd_mem_dmaunmap_userptr. Free it!"], "name": "CVE-2021-47420", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47420\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47420\nhttps://lore.kernel.org/linux-cve-announce/2024052155-CVE-2021-47420-939e@gregkh/T"], "threat_severity": "Low"}

{

bugzilla : { »

description : kernel: drm/amdkfd: fix a potential ttm->sg memory leak (string)

id : 2282313 (string)

url : https://bugzilla.redhat.com/show_bug.cgi?id=2282313 (string)

}

csaw : false (boolean)

cvss3 : { »

cvss3_base_score : 2.3 (string)

cvss3_scoring_vector : CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L (string)

status : draft (string)

}

cwe : CWE-401 (string)

details : [ »

0 : In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix a potential ttm->sg memory leak Memory is allocated for ttm->sg by kmalloc in kfd_mem_dmamap_userptr, but isn't freed by kfree in kfd_mem_dmaunmap_userptr. Free it! (string)

]

name : CVE-2021-47420 (string)

package_state : [ »

0 : { »

cpe : cpe:/o:redhat:enterprise_linux:6 (string)

fix_state : Not affected (string)

package_name : kernel (string)

product_name : Red Hat Enterprise Linux 6 (string)

}

1 : { »

cpe : cpe:/o:redhat:enterprise_linux:7 (string)

fix_state : Out of support scope (string)

package_name : kernel (string)

product_name : Red Hat Enterprise Linux 7 (string)

}

2 : { »

cpe : cpe:/o:redhat:enterprise_linux:7 (string)

fix_state : Out of support scope (string)

package_name : kernel-rt (string)

product_name : Red Hat Enterprise Linux 7 (string)

}

3 : { »

cpe : cpe:/o:redhat:enterprise_linux:8 (string)

fix_state : Fix deferred (string)

package_name : kernel (string)

product_name : Red Hat Enterprise Linux 8 (string)

}

4 : { »

cpe : cpe:/o:redhat:enterprise_linux:8 (string)

fix_state : Fix deferred (string)

package_name : kernel-rt (string)

product_name : Red Hat Enterprise Linux 8 (string)

}

5 : { »

cpe : cpe:/o:redhat:enterprise_linux:9 (string)

fix_state : Affected (string)

package_name : kernel (string)

product_name : Red Hat Enterprise Linux 9 (string)

}

6 : { »

cpe : cpe:/o:redhat:enterprise_linux:9 (string)

fix_state : Affected (string)

package_name : kernel-rt (string)

product_name : Red Hat Enterprise Linux 9 (string)

}

]

public_date : 2024-05-21T00:00:00Z (string)

references : [ »

0 : https://www.cve.org/CVERecord?id=CVE-2021-47420 https://nvd.nist.gov/vuln/detail/CVE-2021-47420 https://lore.kernel.org/linux-cve-announce/2024052155-CVE-2021-47420-939e@gregkh/T (string)

]

threat_severity : Low (string)

}

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

JSON object

JSON object

JSON object

JSON object