Overview
- Description
- The pmd_none_or_trans_huge_or_clear_bad function in include/asm-generic/pgtable.h in the Linux kernel before 3.13 on NUMA systems does not properly determine whether a Page Middle Directory (PMD) entry is a transparent huge-table entry, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted MADV_WILLNEED madvise system call that leverages the absence of a page-table lock.
- Source
- secalert@redhat.com
- NVD status
- Analyzed
Risk scores
CVSS 2.0
- Type
- Primary
- Base score
- 7.2
- Impact score
- 10
- Exploitability score
- 3.9
- Vector string
- AV:L/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
- nvd@nist.gov
- NVD-CWE-Other
Social media
- Hype score
- Not currently trending
Evaluator
- Comment
- CWE-476: NULL Pointer Dereference
- Impact
- -
- Solution
- -
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9C466DDD-E373-4C6B-9817-CBF1EE86A6F9",
"versionEndExcluding": "3.10.76",
"versionStartIncluding": "3.9"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3677661A-9F24-4A1D-A66A-DF9330DF6DB9",
"versionEndExcluding": "3.12.43",
"versionStartIncluding": "3.11"
}
],
"operator": "OR"
}
]
}
]