CVE-2026-90120
8.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
irqchip/gic-v5: Check get_logical_index() return value in MADT IAFFID parsing
In gic_acpi_parse_iaffid() a given MADT GICC entry might not correspond to a logical cpu recognized by the kernel, resulting in the cpu variable initialization to an error value.
Currently, the get_logical_index() return value is not checked for failure, which might result in out-of-bounds memory corruption while trying to index a per_cpu variable array.
Add a check to evaluate get_logical_index() return value.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 35866efa52feaf48cc54a0745851a555654e1446 < 6caeb878f809bdf0aec2fdd96f3d41ef4b69fc69 | affected |
| Linux | Linux | 35866efa52feaf48cc54a0745851a555654e1446 < 328affc639ce9873a7a0a3fd6b8339f19767529b | affected |
| Linux | Linux | 7.0 | affected |
| Linux | Linux | 0 < 7.0 | unaffected |
| Linux | Linux | 7.2.6 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/6caeb878f809bdf0aec2fdd96f3d41ef4b69fc69
- https://git.kernel.org/stable/c/328affc639ce9873a7a0a3fd6b8339f19767529b
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