CVE-2026-53312

iommu/riscv: Remove overflows on the invalidation path

MEDIUM
5.5
CVSS Score
Published: June 26, 2026 at 07:41 PM UTC
Updated: July 6, 2026 at 08:33 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%

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 <

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.13 ≤ v < 6.18.336.13 ≤ v < 7.0.106.13 ≤ v < 7.16.19 ≤ v < 7.0.10488ffbf181718b9ad8c1838cb249d60973e78eda6.13
Vendor states this is fixed in 40a13b49957937427bc23e78eb50679df4396a47 (fixed)
Vendor states this is fixed in 9f0632b0d4246675fa221aa1a3bffadf9c6bd9ac (fixed)
Vendor states this is fixed in e4b7687784153481de45fd39fb97ba3919605c0c (fixed)
Vendor states this is fixed in 6.13 (unaffected)
Vendor states this is fixed in 6.18.33 (unaffected)
Vendor states this is fixed in 7.0.10 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-835

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