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cnvd-2019-06575
Vulnerability from cnvd
Title
Linux Kernel本地安全绕过漏洞（CNVD-2019-06575）
Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。
Linux kernel中存在安全漏洞。攻击者可以利用漏洞绕过某些安全限制并执行未经授权的操作。
Severity
中
VLAI Severity ?
Patch Name
Linux Kernel本地安全绕过漏洞（CNVD-2019-06575）的补丁
Patch Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。
Linux kernel中存在安全漏洞。攻击者可以利用漏洞绕过某些安全限制并执行未经授权的操作。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description
目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit/?id=c30f1fc041b74ecdb072dd44f858750414b8b19f
Reference
https://nvd.nist.gov/vuln/detail/CVE-2018-18281
Impacted products
| Name | Linux kernel >=3.2 |
|---|
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CVE-2018-18281 (GCVE-0-2018-18281)
Vulnerability from cvelistv5
Published
2018-10-30 18:00
Modified
2024-08-05 11:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19.
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"url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1695"
},
{
"name": "[debian-lts-announce] 20190315 [SECURITY] [DLA 1715-1] linux-4.9 security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html"
},
{
"name": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.135",
"refsource": "CONFIRM",
"url": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.135"
},
{
"name": "[debian-lts-announce] 20190327 [SECURITY] [DLA 1731-1] linux security update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html"
},
{
"name": "[debian-lts-announce] 20190401 [SECURITY] [DLA 1731-2] linux regression update",
"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html"
},
{
"name": "RHSA-2019:0831",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2019:0831"
},
{
"name": "RHSA-2019:2043",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2019:2043"
},
{
"name": "RHSA-2019:2029",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2019:2029"
},
{
"name": "RHSA-2020:0036",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2020:0036"
},
{
"name": "RHSA-2020:0100",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2020:0100"
},
{
"name": "RHSA-2020:0103",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2020:0103"
},
{
"name": "RHSA-2020:0179",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2020:0179"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2018-18281",
"datePublished": "2018-10-30T18:00:00",
"dateReserved": "2018-10-12T00:00:00",
"dateUpdated": "2024-08-05T11:08:21.376Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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