CVE-2021-47373: irqchip/gic-v3-its: Fix potential VPE leak on error

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-21 · updated 2026-06-17
Weakness: CWE-193

Description

In the Linux kernel, the following vulnerability has been resolved: irqchip/gic-v3-its: Fix potential VPE leak on error In its_vpe_irq_domain_alloc, when its_vpe_init() returns an error, there is an off-by-one in the number of VPEs to be freed. Fix it by simply passing the number of VPEs allocated, which is the index of the loop iterating over the VPEs. [maz: fixed commit message]

Affected products

Linux kernel: from 4.14 before 4.14.249; from 4.15 before 4.19.209; from 4.20 before 5.4.150; from 5.5 before 5.10.70; from 5.11 before 5.14.9; 5.15-rc1, 5.15-rc2 — fixed in 4.14.249, 4.19.209, 5.10.70, 5.14.9, 5.4.150

How to fix

Upgrade to a fixed version: Linux kernel 4.14.249, 4.19.209, 5.10.70, 5.14.9. Check the vendor advisory for mitigations.

References

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