Medium [CVE-2026-80950] Linux kernel: Renesas I3C driver use-after-free leads to system crash
This medium-severity Red Hat Linux advisory covers CVE-2026-80950.
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Summary
A flaw was found in the Linux kernel's Renesas I3C driver. This driver uses an asynchronous model for data transfers.
When a transfer times out, the associated memory is freed. However, if an interrupt occurs after the memory is freed but before the interrupt handler is aware, it can attempt to access the freed memory, leading to a use-after-free vulnerability.
This can result in a system crash, causing a Denial of Service (DoS). Red Hat severity: Moderate — CVSS 4.7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-825.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 23 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 23 minutes ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 23 minutes ago·verify at source
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