CVE-2024-43819kvm: s390: Reject memory region operations for ucontrol VMs
- 5.5MediumCVSS base score
- 0.29%Exploitation in 30 daysEPSS · top 79% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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]
Timeline
ID reserved
By Linux
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.29% · top 79% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 27e0393f15fc8bc855c6a888387ff5ffd2181089 – < 8a1bbff443a5a22c466d11cbefca9cb361306a9b
- affected 27e0393f15fc8bc855c6a888387ff5ffd2181089 – < 705a8b8cc5a44b206096abb1bfdc8bc43b3c75c7
- affected 27e0393f15fc8bc855c6a888387ff5ffd2181089 – < 49c9945c054df4c22008e2bf87ca74d3e2507aa6
- affected 27e0393f15fc8bc855c6a888387ff5ffd2181089 – < 7816e58967d0e6cadce05c8540b47ed027dc2499
- affected 3.4
- unaffected < 3.4
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.10.3 – ≤ 6.10.*
- unaffected 6.11 – ≤ *
References
References4
- https://git.kernel.org/stable/c/8a1bbff443a5a22c466d11cbefca9cb361306a9b (opens in a new tab)
- https://git.kernel.org/stable/c/705a8b8cc5a44b206096abb1bfdc8bc43b3c75c7 (opens in a new tab)
- https://git.kernel.org/stable/c/49c9945c054df4c22008e2bf87ca74d3e2507aa6 (opens in a new tab)
- https://git.kernel.org/stable/c/7816e58967d0e6cadce05c8540b47ed027dc2499 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-40469 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-43819)Record last updated .