CVE-2026-98316 Affecting linux-6.12 package, versions <6.12.113-1~deb12u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published23 Oct 2026
- disclosed6 Oct 2026
Introduced: 6 Oct 2026
NewCVE-2026-98316 (opens in a new tab)How to fix?
Upgrade Echo:latest linux-6.12 to version 6.12.113-1~deb12u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
ALSA: bcd2000: Fix race between rawmidi and disconnect
Although we tried to fix the potential UAF issues at USB disconnect on bcd2000 driver, there is still an overlooked case -- namely, when a rawmidi trigger callback has been already running at USB disconnect handling, the in-flight function (e.g. bcd2000_midi_send()) could still access the URB, because the previous URB NULL-check & clearance was considered only for the URB complete callbacks, but not about the parallel rawmidi operations.
For addressing the race, this patch introduced a new spinlock that covers each rawmidi operation as well as the rawmidi handling in the complete callback. The URB is cleared with the lock, so it guarantees that the pending rawmidi task already finished or a NULL check is effective.
References
- https://advisory.echohq.com/cve/CVE-2026-98316
- https://git.kernel.org/stable/c/0a7ecf52cb59ed77ec525deb52c496ea8fba10b1
- https://git.kernel.org/stable/c/221253723dc58bb901c3f27a7659823e63fc598c
- https://git.kernel.org/stable/c/3b824930259d54f5047ce6b5c97bd20db2fc2b98
- https://git.kernel.org/stable/c/812ca56867bec3065c2a27f1ff5ce04e2a8bf4f0
- https://git.kernel.org/stable/c/9c8b6eff6e7505c128b615d9a1364ef66fa5c18e
- https://git.kernel.org/stable/c/c83d6b0a65f7b71bbabcc91c045dfbffdff6ae76