Search
Find a vulnerability
Search criteria
ⓘ
Use this form to refine search results.
Full-text search supports keyword queries with ranking and filtering.
You can combine vendor, product, and sources to narrow results.
Enable “Apply ordering” to sort by date instead of relevance.
6 vulnerabilities found for Shiftfs in the Linux kernel by Ubuntu
CVE-2019-15793 (GCVE-0-2019-15793)
Vulnerability from cvelistv5 – Published: 2020-04-23 23:55 – Updated: 2024-09-16 16:58
VLAI
Title
Mishandling of file-system uid/gid with namespaces in shiftfs
Summary
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into init_user_ns, whereas they should have been translated into the s_user_ns for the lower filesystem. This resulted in using ids other than the intended ones in the lower fs, which likely did not map into the shifts s_user_ns. A local attacker could use this to possibly bypass discretionary access control permissions.
Severity
6.5 (Medium)
CWE
- CWE-538 - File and Directory Information Exposure
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://usn.ubuntu.com/usn/usn-4183-1 | x_refsource_MISC |
| https://usn.ubuntu.com/usn/usn-4184-1 | x_refsource_MISC |
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ubuntu | Shiftfs in the Linux kernel |
Affected:
5.3.0-11.12 , < 5.3 kernel*
(custom)
Affected: 5.0 kernel , < 5.0.0-35.38 (custom) |
Date Public
2019-11-12 00:00
Credits
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-05T00:56:22.425Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "Shiftfs in the Linux kernel",
"vendor": "Ubuntu",
"versions": [
{
"changes": [
{
"at": "5.3.0-22.24",
"status": "unaffected"
}
],
"lessThan": "5.3 kernel*",
"status": "affected",
"version": "5.3.0-11.12",
"versionType": "custom"
},
{
"lessThan": "5.0.0-35.38",
"status": "affected",
"version": "5.0 kernel",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Jann Horn of Google Project Zero"
}
],
"datePublic": "2019-11-12T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into init_user_ns, whereas they should have been translated into the s_user_ns for the lower filesystem. This resulted in using ids other than the intended ones in the lower fs, which likely did not map into the shifts s_user_ns. A local attacker could use this to possibly bypass discretionary access control permissions."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-538",
"description": "CWE-538 File and Directory Information Exposure",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2020-04-23T23:55:24.000Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb"
}
],
"source": {
"defect": [
"https://bugs.launchpad.net/bugs/1850867"
],
"discovery": "EXTERNAL"
},
"title": "Mishandling of file-system uid/gid with namespaces in shiftfs",
"x_generator": {
"engine": "Vulnogram 0.0.9"
},
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security@ubuntu.com",
"DATE_PUBLIC": "2019-11-12 18:00:00 UTC",
"ID": "CVE-2019-15793",
"STATE": "PUBLIC",
"TITLE": "Mishandling of file-system uid/gid with namespaces in shiftfs"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Shiftfs in the Linux kernel",
"version": {
"version_data": [
{
"version_affected": "\u003e=",
"version_name": "5.3 kernel",
"version_value": "5.3.0-11.12"
},
{
"version_affected": "\u003c",
"version_name": "5.3 kernel",
"version_value": "5.3.0-22.24"
},
{
"version_affected": "\u003c",
"version_name": "5.0 kernel",
"version_value": "5.0.0-35.38"
}
]
}
}
]
},
"vendor_name": "Ubuntu"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Jann Horn of Google Project Zero"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into init_user_ns, whereas they should have been translated into the s_user_ns for the lower filesystem. This resulted in using ids other than the intended ones in the lower fs, which likely did not map into the shifts s_user_ns. A local attacker could use this to possibly bypass discretionary access control permissions."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-538 File and Directory Information Exposure"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://usn.ubuntu.com/usn/usn-4183-1",
"refsource": "MISC",
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"name": "https://usn.ubuntu.com/usn/usn-4184-1",
"refsource": "MISC",
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"name": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb",
"refsource": "MISC",
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb"
}
]
},
"source": {
"defect": [
"https://bugs.launchpad.net/bugs/1850867"
],
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2019-15793",
"datePublished": "2020-04-23T23:55:24.581Z",
"dateReserved": "2019-08-29T00:00:00.000Z",
"dateUpdated": "2024-09-16T16:58:57.384Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2019-15792 (GCVE-0-2019-15792)
Vulnerability from cvelistv5 – Published: 2020-04-23 23:55 – Updated: 2024-09-16 23:41
VLAI
Title
Type confusion in shiftfs
Summary
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file->private_data, a void* that points to a filesystem-dependent type, to a "struct shiftfs_file_info *". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code.
Severity
7.1 (High)
CWE
- CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://usn.ubuntu.com/usn/usn-4183-1 | x_refsource_MISC |
| https://usn.ubuntu.com/usn/usn-4184-1 | x_refsource_MISC |
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ubuntu | Shiftfs in the Linux kernel |
Affected:
5.3.0-11.12 , < 5.3 kernel*
(custom)
Affected: 5.0 kernel , < 5.0.0-35.38 (custom) |
Date Public
2019-11-12 00:00
Credits
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-05T00:56:22.476Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4c"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "Shiftfs in the Linux kernel",
"vendor": "Ubuntu",
"versions": [
{
"changes": [
{
"at": "5.3.0-22.24",
"status": "unaffected"
}
],
"lessThan": "5.3 kernel*",
"status": "affected",
"version": "5.3.0-11.12",
"versionType": "custom"
},
{
"lessThan": "5.0.0-35.38",
"status": "affected",
"version": "5.0 kernel",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Jann Horn of Google Project Zero"
}
],
"datePublic": "2019-11-12T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file-\u003eprivate_data, a void* that points to a filesystem-dependent type, to a \"struct shiftfs_file_info *\". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-843",
"description": "CWE-843 Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2020-04-23T23:55:24.000Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4c"
}
],
"source": {
"defect": [
"https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850867"
],
"discovery": "EXTERNAL"
},
"title": "Type confusion in shiftfs",
"x_generator": {
"engine": "Vulnogram 0.0.9"
},
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security@ubuntu.com",
"DATE_PUBLIC": "2019-11-12 18:00:00 UTC",
"ID": "CVE-2019-15792",
"STATE": "PUBLIC",
"TITLE": "Type confusion in shiftfs"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Shiftfs in the Linux kernel",
"version": {
"version_data": [
{
"version_affected": "\u003e=",
"version_name": "5.3 kernel",
"version_value": "5.3.0-11.12"
},
{
"version_affected": "\u003c",
"version_name": "5.3 kernel",
"version_value": "5.3.0-22.24"
},
{
"version_affected": "\u003c",
"version_name": "5.0 kernel",
"version_value": "5.0.0-35.38"
}
]
}
}
]
},
"vendor_name": "Ubuntu"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Jann Horn of Google Project Zero"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file-\u003eprivate_data, a void* that points to a filesystem-dependent type, to a \"struct shiftfs_file_info *\". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-843 Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://usn.ubuntu.com/usn/usn-4183-1",
"refsource": "MISC",
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"name": "https://usn.ubuntu.com/usn/usn-4184-1",
"refsource": "MISC",
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"name": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4c",
"refsource": "MISC",
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4c"
}
]
},
"source": {
"defect": [
"https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850867"
],
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2019-15792",
"datePublished": "2020-04-23T23:55:24.126Z",
"dateReserved": "2019-08-29T00:00:00.000Z",
"dateUpdated": "2024-09-16T23:41:36.466Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2019-15791 (GCVE-0-2019-15791)
Vulnerability from cvelistv5 – Published: 2020-04-23 23:55 – Updated: 2024-09-17 00:11
VLAI
Title
Reference count underflow in shiftfs
Summary
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, which then puts a reference to that file, leading to a refcount underflow.
Severity
7.1 (High)
CWE
- CWE-672 - Operation on a Resource after Expiration or Release
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://usn.ubuntu.com/usn/usn-4183-1 | x_refsource_MISC |
| https://usn.ubuntu.com/usn/usn-4184-1 | x_refsource_MISC |
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ubuntu | Shiftfs in the Linux kernel |
Affected:
5.3.0-11.12 , < 5.3 kernel*
(custom)
Affected: 5.0 kernel , < 5.0.0-35.38 (custom) |
Date Public
2019-11-12 00:00
Credits
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-05T00:56:22.393Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=601a64857b3d7040ca15c39c929e6b9db3373ec1"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "Shiftfs in the Linux kernel",
"vendor": "Ubuntu",
"versions": [
{
"changes": [
{
"at": "5.3.0-22.24",
"status": "unaffected"
}
],
"lessThan": "5.3 kernel*",
"status": "affected",
"version": "5.3.0-11.12",
"versionType": "custom"
},
{
"lessThan": "5.0.0-35.38",
"status": "affected",
"version": "5.0 kernel",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Jann Horn of Google Project Zero"
}
],
"datePublic": "2019-11-12T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, which then puts a reference to that file, leading to a refcount underflow."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-672",
"description": "CWE-672 Operation on a Resource after Expiration or Release",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2020-04-23T23:55:23.000Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=601a64857b3d7040ca15c39c929e6b9db3373ec1"
}
],
"source": {
"defect": [
"https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850867"
],
"discovery": "EXTERNAL"
},
"title": "Reference count underflow in shiftfs",
"x_generator": {
"engine": "Vulnogram 0.0.9"
},
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security@ubuntu.com",
"DATE_PUBLIC": "2019-11-12 18:00:00 UTC",
"ID": "CVE-2019-15791",
"STATE": "PUBLIC",
"TITLE": "Reference count underflow in shiftfs"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Shiftfs in the Linux kernel",
"version": {
"version_data": [
{
"version_affected": "\u003e=",
"version_name": "5.3 kernel",
"version_value": "5.3.0-11.12"
},
{
"version_affected": "\u003c",
"version_name": "5.3 kernel",
"version_value": "5.3.0-22.24"
},
{
"version_affected": "\u003c",
"version_name": "5.0 kernel",
"version_value": "5.0.0-35.38"
}
]
}
}
]
},
"vendor_name": "Ubuntu"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Jann Horn of Google Project Zero"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, which then puts a reference to that file, leading to a refcount underflow."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-672 Operation on a Resource after Expiration or Release"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://usn.ubuntu.com/usn/usn-4183-1",
"refsource": "MISC",
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"name": "https://usn.ubuntu.com/usn/usn-4184-1",
"refsource": "MISC",
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"name": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=601a64857b3d7040ca15c39c929e6b9db3373ec1",
"refsource": "MISC",
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=601a64857b3d7040ca15c39c929e6b9db3373ec1"
}
]
},
"source": {
"defect": [
"https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850867"
],
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2019-15791",
"datePublished": "2020-04-23T23:55:23.619Z",
"dateReserved": "2019-08-29T00:00:00.000Z",
"dateUpdated": "2024-09-17T00:11:12.912Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2019-15793 (GCVE-0-2019-15793)
Vulnerability from nvd – Published: 2020-04-23 23:55 – Updated: 2024-09-16 16:58
VLAI
Title
Mishandling of file-system uid/gid with namespaces in shiftfs
Summary
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into init_user_ns, whereas they should have been translated into the s_user_ns for the lower filesystem. This resulted in using ids other than the intended ones in the lower fs, which likely did not map into the shifts s_user_ns. A local attacker could use this to possibly bypass discretionary access control permissions.
Severity
6.5 (Medium)
CWE
- CWE-538 - File and Directory Information Exposure
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://usn.ubuntu.com/usn/usn-4183-1 | x_refsource_MISC |
| https://usn.ubuntu.com/usn/usn-4184-1 | x_refsource_MISC |
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ubuntu | Shiftfs in the Linux kernel |
Affected:
5.3.0-11.12 , < 5.3 kernel*
(custom)
Affected: 5.0 kernel , < 5.0.0-35.38 (custom) |
Date Public
2019-11-12 00:00
Credits
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-05T00:56:22.425Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "Shiftfs in the Linux kernel",
"vendor": "Ubuntu",
"versions": [
{
"changes": [
{
"at": "5.3.0-22.24",
"status": "unaffected"
}
],
"lessThan": "5.3 kernel*",
"status": "affected",
"version": "5.3.0-11.12",
"versionType": "custom"
},
{
"lessThan": "5.0.0-35.38",
"status": "affected",
"version": "5.0 kernel",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Jann Horn of Google Project Zero"
}
],
"datePublic": "2019-11-12T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into init_user_ns, whereas they should have been translated into the s_user_ns for the lower filesystem. This resulted in using ids other than the intended ones in the lower fs, which likely did not map into the shifts s_user_ns. A local attacker could use this to possibly bypass discretionary access control permissions."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-538",
"description": "CWE-538 File and Directory Information Exposure",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2020-04-23T23:55:24.000Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb"
}
],
"source": {
"defect": [
"https://bugs.launchpad.net/bugs/1850867"
],
"discovery": "EXTERNAL"
},
"title": "Mishandling of file-system uid/gid with namespaces in shiftfs",
"x_generator": {
"engine": "Vulnogram 0.0.9"
},
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security@ubuntu.com",
"DATE_PUBLIC": "2019-11-12 18:00:00 UTC",
"ID": "CVE-2019-15793",
"STATE": "PUBLIC",
"TITLE": "Mishandling of file-system uid/gid with namespaces in shiftfs"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Shiftfs in the Linux kernel",
"version": {
"version_data": [
{
"version_affected": "\u003e=",
"version_name": "5.3 kernel",
"version_value": "5.3.0-11.12"
},
{
"version_affected": "\u003c",
"version_name": "5.3 kernel",
"version_value": "5.3.0-22.24"
},
{
"version_affected": "\u003c",
"version_name": "5.0 kernel",
"version_value": "5.0.0-35.38"
}
]
}
}
]
},
"vendor_name": "Ubuntu"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Jann Horn of Google Project Zero"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into init_user_ns, whereas they should have been translated into the s_user_ns for the lower filesystem. This resulted in using ids other than the intended ones in the lower fs, which likely did not map into the shifts s_user_ns. A local attacker could use this to possibly bypass discretionary access control permissions."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-538 File and Directory Information Exposure"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://usn.ubuntu.com/usn/usn-4183-1",
"refsource": "MISC",
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"name": "https://usn.ubuntu.com/usn/usn-4184-1",
"refsource": "MISC",
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"name": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb",
"refsource": "MISC",
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=3644b9d5688da86f18e017c9c580b75cf52927bb"
}
]
},
"source": {
"defect": [
"https://bugs.launchpad.net/bugs/1850867"
],
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2019-15793",
"datePublished": "2020-04-23T23:55:24.581Z",
"dateReserved": "2019-08-29T00:00:00.000Z",
"dateUpdated": "2024-09-16T16:58:57.384Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2019-15792 (GCVE-0-2019-15792)
Vulnerability from nvd – Published: 2020-04-23 23:55 – Updated: 2024-09-16 23:41
VLAI
Title
Type confusion in shiftfs
Summary
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file->private_data, a void* that points to a filesystem-dependent type, to a "struct shiftfs_file_info *". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code.
Severity
7.1 (High)
CWE
- CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://usn.ubuntu.com/usn/usn-4183-1 | x_refsource_MISC |
| https://usn.ubuntu.com/usn/usn-4184-1 | x_refsource_MISC |
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ubuntu | Shiftfs in the Linux kernel |
Affected:
5.3.0-11.12 , < 5.3 kernel*
(custom)
Affected: 5.0 kernel , < 5.0.0-35.38 (custom) |
Date Public
2019-11-12 00:00
Credits
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-05T00:56:22.476Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4c"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "Shiftfs in the Linux kernel",
"vendor": "Ubuntu",
"versions": [
{
"changes": [
{
"at": "5.3.0-22.24",
"status": "unaffected"
}
],
"lessThan": "5.3 kernel*",
"status": "affected",
"version": "5.3.0-11.12",
"versionType": "custom"
},
{
"lessThan": "5.0.0-35.38",
"status": "affected",
"version": "5.0 kernel",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Jann Horn of Google Project Zero"
}
],
"datePublic": "2019-11-12T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file-\u003eprivate_data, a void* that points to a filesystem-dependent type, to a \"struct shiftfs_file_info *\". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-843",
"description": "CWE-843 Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2020-04-23T23:55:24.000Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4c"
}
],
"source": {
"defect": [
"https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850867"
],
"discovery": "EXTERNAL"
},
"title": "Type confusion in shiftfs",
"x_generator": {
"engine": "Vulnogram 0.0.9"
},
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security@ubuntu.com",
"DATE_PUBLIC": "2019-11-12 18:00:00 UTC",
"ID": "CVE-2019-15792",
"STATE": "PUBLIC",
"TITLE": "Type confusion in shiftfs"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Shiftfs in the Linux kernel",
"version": {
"version_data": [
{
"version_affected": "\u003e=",
"version_name": "5.3 kernel",
"version_value": "5.3.0-11.12"
},
{
"version_affected": "\u003c",
"version_name": "5.3 kernel",
"version_value": "5.3.0-22.24"
},
{
"version_affected": "\u003c",
"version_name": "5.0 kernel",
"version_value": "5.0.0-35.38"
}
]
}
}
]
},
"vendor_name": "Ubuntu"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Jann Horn of Google Project Zero"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file-\u003eprivate_data, a void* that points to a filesystem-dependent type, to a \"struct shiftfs_file_info *\". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-843 Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://usn.ubuntu.com/usn/usn-4183-1",
"refsource": "MISC",
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"name": "https://usn.ubuntu.com/usn/usn-4184-1",
"refsource": "MISC",
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"name": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4c",
"refsource": "MISC",
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4c"
}
]
},
"source": {
"defect": [
"https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850867"
],
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2019-15792",
"datePublished": "2020-04-23T23:55:24.126Z",
"dateReserved": "2019-08-29T00:00:00.000Z",
"dateUpdated": "2024-09-16T23:41:36.466Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2019-15791 (GCVE-0-2019-15791)
Vulnerability from nvd – Published: 2020-04-23 23:55 – Updated: 2024-09-17 00:11
VLAI
Title
Reference count underflow in shiftfs
Summary
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, which then puts a reference to that file, leading to a refcount underflow.
Severity
7.1 (High)
CWE
- CWE-672 - Operation on a Resource after Expiration or Release
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://usn.ubuntu.com/usn/usn-4183-1 | x_refsource_MISC |
| https://usn.ubuntu.com/usn/usn-4184-1 | x_refsource_MISC |
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ubuntu | Shiftfs in the Linux kernel |
Affected:
5.3.0-11.12 , < 5.3 kernel*
(custom)
Affected: 5.0 kernel , < 5.0.0-35.38 (custom) |
Date Public
2019-11-12 00:00
Credits
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-05T00:56:22.393Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=601a64857b3d7040ca15c39c929e6b9db3373ec1"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "Shiftfs in the Linux kernel",
"vendor": "Ubuntu",
"versions": [
{
"changes": [
{
"at": "5.3.0-22.24",
"status": "unaffected"
}
],
"lessThan": "5.3 kernel*",
"status": "affected",
"version": "5.3.0-11.12",
"versionType": "custom"
},
{
"lessThan": "5.0.0-35.38",
"status": "affected",
"version": "5.0 kernel",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Jann Horn of Google Project Zero"
}
],
"datePublic": "2019-11-12T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, which then puts a reference to that file, leading to a refcount underflow."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-672",
"description": "CWE-672 Operation on a Resource after Expiration or Release",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2020-04-23T23:55:23.000Z",
"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"shortName": "canonical"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=601a64857b3d7040ca15c39c929e6b9db3373ec1"
}
],
"source": {
"defect": [
"https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850867"
],
"discovery": "EXTERNAL"
},
"title": "Reference count underflow in shiftfs",
"x_generator": {
"engine": "Vulnogram 0.0.9"
},
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security@ubuntu.com",
"DATE_PUBLIC": "2019-11-12 18:00:00 UTC",
"ID": "CVE-2019-15791",
"STATE": "PUBLIC",
"TITLE": "Reference count underflow in shiftfs"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Shiftfs in the Linux kernel",
"version": {
"version_data": [
{
"version_affected": "\u003e=",
"version_name": "5.3 kernel",
"version_value": "5.3.0-11.12"
},
{
"version_affected": "\u003c",
"version_name": "5.3 kernel",
"version_value": "5.3.0-22.24"
},
{
"version_affected": "\u003c",
"version_name": "5.0 kernel",
"version_value": "5.0.0-35.38"
}
]
}
}
]
},
"vendor_name": "Ubuntu"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Jann Horn of Google Project Zero"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() installs an fd referencing a file from the lower filesystem without taking an additional reference to that file. After the btrfs ioctl completes this fd is closed, which then puts a reference to that file, leading to a refcount underflow."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-672 Operation on a Resource after Expiration or Release"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://usn.ubuntu.com/usn/usn-4183-1",
"refsource": "MISC",
"url": "https://usn.ubuntu.com/usn/usn-4183-1"
},
{
"name": "https://usn.ubuntu.com/usn/usn-4184-1",
"refsource": "MISC",
"url": "https://usn.ubuntu.com/usn/usn-4184-1"
},
{
"name": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=601a64857b3d7040ca15c39c929e6b9db3373ec1",
"refsource": "MISC",
"url": "https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=601a64857b3d7040ca15c39c929e6b9db3373ec1"
}
]
},
"source": {
"defect": [
"https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1850867"
],
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
"assignerShortName": "canonical",
"cveId": "CVE-2019-15791",
"datePublished": "2020-04-23T23:55:23.619Z",
"dateReserved": "2019-08-29T00:00:00.000Z",
"dateUpdated": "2024-09-17T00:11:12.912Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}