GSD-2021-22543
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation.
Aliases
Aliases
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"https://www.suse.com/security/cve/CVE-2021-22543.html",
"https://access.redhat.com/errata/RHSA-2021:4000",
"https://access.redhat.com/errata/RHSA-2021:3987",
"https://access.redhat.com/errata/RHSA-2021:3943",
"https://access.redhat.com/errata/RHSA-2021:3814",
"https://access.redhat.com/errata/RHSA-2021:3812",
"https://access.redhat.com/errata/RHSA-2021:3802",
"https://access.redhat.com/errata/RHSA-2021:3801",
"https://access.redhat.com/errata/RHSA-2021:3768",
"https://access.redhat.com/errata/RHSA-2021:3767",
"https://access.redhat.com/errata/RHSA-2021:3766",
"https://access.redhat.com/errata/RHSA-2021:3725",
"https://access.redhat.com/errata/RHSA-2021:3380",
"https://access.redhat.com/errata/RHSA-2021:3375",
"https://access.redhat.com/errata/RHSA-2021:3363",
"https://access.redhat.com/errata/RHSA-2021:3235",
"https://access.redhat.com/errata/RHSA-2021:3181",
"https://access.redhat.com/errata/RHSA-2021:3173",
"https://access.redhat.com/errata/RHSA-2021:3088",
"https://access.redhat.com/errata/RHSA-2021:3057",
"https://access.redhat.com/errata/RHSA-2021:3044",
"https://ubuntu.com/security/CVE-2021-22543",
"https://advisories.mageia.org/CVE-2021-22543.html",
"https://security.archlinux.org/CVE-2021-22543",
"https://alas.aws.amazon.com/cve/html/CVE-2021-22543.html",
"https://linux.oracle.com/cve/CVE-2021-22543.html",
"https://access.redhat.com/errata/RHSA-2022:5640"
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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