Improper Input Validation Affecting bpftool package, versions *
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Test your applications- Snyk ID SNYK-CENTOS7-BPFTOOL-6332587
- published 29 Feb 2024
- disclosed 28 Feb 2024
Introduced: 28 Feb 2024
CVE-2021-47035 Open this link in a new tabHow to fix?
There is no fixed version for Centos:7 bpftool.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
iommu/vt-d: Remove WO permissions on second-level paging entries
When the first level page table is used for IOVA translation, it only supports Read-Only and Read-Write permissions. The Write-Only permission is not supported as the PRESENT bit (implying Read permission) should always set. When using second level, we still give separate permissions that allows WriteOnly which seems inconsistent and awkward. We want to have consistent behavior. After moving to 1st level, we don't want things to work sometimes, and break if we use 2nd level for the same mappings. Hence remove this configuration.
References
- https://access.redhat.com/security/cve/CVE-2021-47035
- https://git.kernel.org/stable/c/25faff78138933244c678c7fc78f7c0340fa04a0
- https://git.kernel.org/stable/c/66c24699f266ff310381a9552d3576eea8ad6e20
- https://git.kernel.org/stable/c/89bd620798704a8805fc9db0d71d7f812cf5b3d2
- https://git.kernel.org/stable/c/c848416cc05afc1589edba04fe00b85c2f797ee3
- https://git.kernel.org/stable/c/eea53c5816889ee8b64544fa2e9311a81184ff9c