In the Linux kernel, the following vulnerability has been resolved: iommu/riscv: Remove overflows on the invalidation path Since RISC-V supports a… (CVE-2026-53312)
In the Linux kernel, the following vulnerability has been resolved: iommu/riscv: Remove overflows on the invalidation path Since RISC-V supports a sign extended page table it should support a gather->end of ULONG_MAX, but if this happens it will infinite loop because of the overflow. Also avoid overflow computing the length by moving the +1 to the other side of the <
AI Analysis
Technical Summary
The Linux kernel vulnerability (CVE-2026-53312) involves the iommu driver for RISC-V architectures. The vulnerability arises from improper handling of sign-extended page tables, where a gather->end value of ULONG_MAX causes an integer overflow. This overflow leads to an infinite loop during the invalidation process. The fix involves removing the overflow by adjusting the arithmetic operations to prevent looping indefinitely.
Potential Impact
The vulnerability does not impact confidentiality or integrity but results in a denial of service (DoS) condition due to an infinite loop in the kernel. This can cause system unavailability or require a reboot to recover. There are no known exploits in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or fix links are provided in the available data. Users should monitor official Linux kernel advisories for updates addressing this issue.
In the Linux kernel, the following vulnerability has been resolved: iommu/riscv: Remove overflows on the invalidation path Since RISC-V supports a… (CVE-2026-53312)
Description
In the Linux kernel, the following vulnerability has been resolved: iommu/riscv: Remove overflows on the invalidation path Since RISC-V supports a sign extended page table it should support a gather->end of ULONG_MAX, but if this happens it will infinite loop because of the overflow. Also avoid overflow computing the length by moving the +1 to the other side of the <
CVSS v3.1
Score 5.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel vulnerability (CVE-2026-53312) involves the iommu driver for RISC-V architectures. The vulnerability arises from improper handling of sign-extended page tables, where a gather->end value of ULONG_MAX causes an integer overflow. This overflow leads to an infinite loop during the invalidation process. The fix involves removing the overflow by adjusting the arithmetic operations to prevent looping indefinitely.
Potential Impact
The vulnerability does not impact confidentiality or integrity but results in a denial of service (DoS) condition due to an infinite loop in the kernel. This can cause system unavailability or require a reboot to recover. There are no known exploits in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or fix links are provided in the available data. Users should monitor official Linux kernel advisories for updates addressing this issue.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-h2cq-p42h-rq44
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-53312"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a4c33fd27e9c797195f27ad
Added to database: 07/06/2026, 23:02:21 UTC
Last enriched: 07/06/2026, 23:08:42 UTC
Last updated: 07/31/2026, 19:24:47 UTC
Views: 7
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