CVE-2026-98066 — ALSA: caiaq: Fix potential double-free at error path
In the Linux kernel, the following vulnerability has been resolved: ALSA: caiaq: Fix potential double-free at error path The fix for caiaq driver's resource management to handle the errors tries to release the resources in a common destructor call, but as a sashiko review for another patch suggested, some of the audio resources such as URBs have been already freed, and this may lead to a double-free. For addressing the double-free, call the common destructor function from each place, and assure that the resource pointers get cleared.
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 |
version 096dd8519cf2f768e9e14f224b627f7aaee1a9c5version 7.1≥ 7.0.4 and < 7.1≥ 6.18.27 and < 6.18.53≥ 6.12.86 and < 6.12.111≥ 6.6.140 and < 6.6.158≥ 6.1.175 and < 6.1.189≥ 5.15.209 and < 5.15.222 and 9 more≥ 5.10.258 and < 5.10.271≥ da938aa9fc7826901921dcea225948ab21a97e45 and < ddfff1cec52b7deec6c770ba85de4dab6221d0a2≥ 28abd224db4a49560b452115bca3672a20e45b2f and < 3b26ceef88c110f4d188387cffa0df78657be904≥ 28abd224db4a49560b452115bca3672a20e45b2f and < b629ae7b3eddc6812d5af3614b8c1bd76d65fa75≥ e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056 and < 1dd715ca0568e4833ed5878f49b028b449941096≥ 6251e3e256337a30160ef59ab1580dde4d1acd28 and < 2883d65a3d9a8d9a682cdb003e6ab7fb28bb17f8≥ f537e3ad69609f6924a4db6b4a7f6561f5288bdd and < 75b20534d7a37e091db585f8b505a3b77b7e81a8≥ b956e48371f2ff72b76be9a829800ecec963bd45 and < b6cd6f1664a0bc8038b9baa7e6f5fe8e4142d056≥ 09616e25f502080ba684fc7fcf959d1376ab756d and < da93fd9002d980bb02b729c5d5aeefeb252dd110 |
Vulnerable | CVE Program (cve.org) e CISA ADP |
EPSS over time FIRST
Oct 15, 2026 → Oct 16, 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 · → Undergoing Analysis
- Record created in this database
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 1× Official description updated · Oct 15, 2026 – Oct 15, 2026
References
8 on the record
- git.kernel.org/stable/c/b6cd6f1664a0bc8038b9baa7e6f5fe8e4142d056
- git.kernel.org/stable/c/75b20534d7a37e091db585f8b505a3b77b7e81a8
- git.kernel.org/stable/c/ddfff1cec52b7deec6c770ba85de4dab6221d0a2
- git.kernel.org/stable/c/da93fd9002d980bb02b729c5d5aeefeb252dd110
- git.kernel.org/stable/c/1dd715ca0568e4833ed5878f49b028b449941096
- git.kernel.org/stable/c/b629ae7b3eddc6812d5af3614b8c1bd76d65fa75
- git.kernel.org/stable/c/3b26ceef88c110f4d188387cffa0df78657be904
- git.kernel.org/stable/c/2883d65a3d9a8d9a682cdb003e6ab7fb28bb17f8
Elsewhere on this site
Related CVEs (same products)
- Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 2d
- Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 2d
- Unknown CVE-2026-98430 RDMA/efa: Keep admin queues alive while IRQ is registered 2d
- Unknown CVE-2026-98424 wifi: cfg80211: undo netns switch if renaming the wiphy fails 2d
- Unknown CVE-2026-98425 wifi: mac80211: don't warn when an IBSS has no channel to scan 2d
- Unknown CVE-2026-98426 wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path 2d
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-2026-98066 is "ALSA: caiaq: Fix potential double-free at error path", 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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