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CVE-2024-43819

UNKNOWN
Published 2024-08-17T09:21:40.994Z
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No CVSS data available

Description

In the Linux kernel, the following vulnerability has been resolved:

kvm: s390: Reject memory region operations for ucontrol VMs

This change rejects the KVM_SET_USER_MEMORY_REGION and
KVM_SET_USER_MEMORY_REGION2 ioctls when called on a ucontrol VM.
This is necessary since ucontrol VMs have kvm->arch.gmap set to 0 and
would thus result in a null pointer dereference further in.
Memory management needs to be performed in userspace and using the
ioctls KVM_S390_UCAS_MAP and KVM_S390_UCAS_UNMAP.

Also improve s390 specific documentation for KVM_SET_USER_MEMORY_REGION
and KVM_SET_USER_MEMORY_REGION2.

[[email protected]: commit message spelling fix, subject prefix fix]

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

27e0393f15fc8bc855c6a888387ff5ffd2181089 27e0393f15fc8bc855c6a888387ff5ffd2181089
Linux

Linux

Affected Versions:

3.4 0 6.10.3 6.11

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-p6j3-p28j-4x3h

Advisory Details

In the Linux kernel, the following vulnerability has been resolved: kvm: s390: Reject memory region operations for ucontrol VMs This change rejects the KVM_SET_USER_MEMORY_REGION and KVM_SET_USER_MEMORY_REGION2 ioctls when called on a ucontrol VM. This is necessary since ucontrol VMs have kvm->arch.gmap set to 0 and would thus result in a null pointer dereference further in. Memory management needs to be performed in userspace and using the ioctls KVM_S390_UCAS_MAP and KVM_S390_UCAS_UNMAP. Also improve s390 specific documentation for KVM_SET_USER_MEMORY_REGION and KVM_SET_USER_MEMORY_REGION2. [[email protected]: commit message spelling fix, subject prefix fix]

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-43819
WEB https://git.kernel.org/stable/c/49c9945c054df4c22008e2bf87ca74d3e2507aa6
WEB https://git.kernel.org/stable/c/7816e58967d0e6cadce05c8540b47ed027dc2499

Advisory provided by GitHub Security Advisory Database. Published: August 17, 2024, Modified: September 3, 2024

References

https://git.kernel.org/stable/c/49c9945c054df4c22008e2bf87ca74d3e2507aa6
https://git.kernel.org/stable/c/7816e58967d0e6cadce05c8540b47ed027dc2499
Published: 2024-08-17T09:21:40.994Z
Last Modified: 2025-05-04T09:26:58.133Z
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