5.5
CVE-2026-64291
- EPSS 0.15%
- Veröffentlicht 25.07.2026 08:49:30
- Zuletzt bearbeitet 17.08.2026 05:17:28
- CVE-Watchlists
- Unerledigt
iommufd: Set veventq_depth upper bound
In the Linux kernel, the following vulnerability has been resolved: iommufd: Set veventq_depth upper bound iommufd_veventq_alloc() accepts any !0 veventq_depth from userspace, with an upper bound at U32_MAX. This leaves a vulnerability where userspace can allocate excessively large queues to exhaust kernel memory reserves. Cap the veventq_depth (maximum number of entries) to 1 << 19, matching the maximum number of entries in the SMMUv3 EVTQ (the largest use case today).
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.15 < 6.18.39
Linux ≫ Linux Kernel Version >= 6.19 < 7.1.4
VulnDex Vulnerability Enrichment
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.15% | 0.05 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| NIST | 5.5 | 1.8 | 3.6 |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
|
https://git.kernel.org/stable/c/f565297edf316016be4a1a9e2eb9f39359313f43
https://git.kernel.org/stable/c/e7b5e55652746b1221b9c10ff80eae8a154101ba
https://git.kernel.org/stable/c/6ebf2eb46fbd5b40393ff8fbb847ba96925beaff