High [CVE-2026-74661] fix netdev use-after-free in beacon worker
This high-severity Red Hat Linux advisory covers CVE-2026-74661.
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Summary
A flaw was found in the mac802154 component of the Linux kernel. This use-after-free vulnerability allows a local attacker to potentially cause a system crash (denial of service) or execute arbitrary code.
The issue arises when the beacon worker attempts to access memory that has already been freed during network interface teardown. Red Hat severity: Moderate — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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 1 hour 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 1 hour 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 1 hour ago·verify at source
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