CVE-2026-98316 — ALSA: bcd2000: Fix race between rawmidi and disconnect
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.
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
How the score was calculated
- EPSS 0.2% (30-day exploitation probability)+1
The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.
First 24 hours
Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.
- Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
- No fix documented in the sources: reduce exposure and monitor the vendor advisory.
- Search available logs for exploit probes, errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Linux | Linux |
≥ 3c00004f134fc819f9d9e202c6a64acde0a1f8d0 and < 3b824930259d54f5047ce6b5c97bd20db2fc2b98≥ 6c07aad8a7c9ef8ebc4d03a964b882123a349a2e and < c83d6b0a65f7b71bbabcc91c045dfbffdff6ae76≥ eb482a06791d6168beb8c78cc904ac5a5ed96a55 and < 0a7ecf52cb59ed77ec525deb52c496ea8fba10b1≥ 7df3194bdb7479cad9199889655a566a2c0c1d1b and < 812ca56867bec3065c2a27f1ff5ce04e2a8bf4f0≥ b06ebc7fe25a6af4a9f6e4a3d4236a4178ad4b01 and < 9c8b6eff6e7505c128b615d9a1364ef66fa5c18e≥ 459d3a64766f5ca2f1886daeaf24582831a5f5ab and < 221253723dc58bb901c3f27a7659823e63fc598cversion 9af08677aa57debaca5b57c8045c52a83d3dd376version 5a77febac6faf6da40fbb4555f703eeb91b58130 and 8 more≥ 6.1.188 and < 6.1.189≥ 6.6.157 and < 6.6.158≥ 6.12.109 and < 6.12.112≥ 6.18.50 and < 6.18.54≥ 7.2.4 and < 7.2.8≥ 5.10.270 and < 5.11≥ 5.15.221 and < 5.16version 7.3-rc1 |
Vulnerable | CVE Program (cve.org) e CISA ADP |
EPSS over time FIRST
Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.18%
Detection
Read off the CVSS vector and the weakness class. Starting points, not tested rules.
- Not enough vector or weakness data: use the affected application’s logs as a starting point.
Timeline
What happened to this CVE, newest first.
- 2026
- Record published
- Affected products added · linux/linux
- Source status changed · → Received
- Record created in this database
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 1× Official description updated · Oct 13, 2026 – Oct 13, 2026
References
6 on the record
- git.kernel.org/stable/c/221253723dc58bb901c3f27a7659823e63fc598c
- git.kernel.org/stable/c/9c8b6eff6e7505c128b615d9a1364ef66fa5c18e
- git.kernel.org/stable/c/812ca56867bec3065c2a27f1ff5ce04e2a8bf4f0
- git.kernel.org/stable/c/c83d6b0a65f7b71bbabcc91c045dfbffdff6ae76
- git.kernel.org/stable/c/3b824930259d54f5047ce6b5c97bd20db2fc2b98
- git.kernel.org/stable/c/0a7ecf52cb59ed77ec525deb52c496ea8fba10b1
Elsewhere on this site
Related CVEs (same products)
- Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 10h
- Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 10h
- Unknown CVE-2026-98424 wifi: cfg80211: undo netns switch if renaming the wiphy fails 1d
- Unknown CVE-2026-98425 wifi: mac80211: don't warn when an IBSS has no channel to scan 1d
- Unknown CVE-2026-98426 wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path 1d
- Unknown CVE-2026-98427 net/sched: codel: bound the dropping loop per dequeue call 1d
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No CVSS score published by NVD, the CNA, CISA or GitHub so far.
- No fixed version, patch or mitigation documented.
- No CISA SSVC assessment.
- No CWE classification.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.
Answered from this record
Text assembled only from the fields above — no additional claims.
What should defenders know first?
CVE-2026-98316 is "ALSA: bcd2000: Fix race between rawmidi and disconnect", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.18% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.
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