High [CVE-2026-74499] fix OOB write in snd_usbmidi_akai_output
This high-severity Red Hat Linux advisory covers CVE-2026-74499 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8.
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Summary
A flaw was found in the kernel's Advanced Linux Sound Architecture (ALSA) USB audio driver. An integer overflow vulnerability in the `snd_usbmidi_akai_output()` function, when processing data from a USB device with a small bulk-OUT endpoint, can lead to an out-of-bounds write in the kernel heap.
A local attacker, by writing to a MIDI device node with a specially crafted USB device, could exploit this to achieve arbitrary code execution or cause a denial of service. 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-787. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: kernel-rt.
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 2 hours 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 2 hours 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 2 hours ago·verify at source
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