Unknown

CVE-2026-89946 — ASoC: cs35l33: drain threaded IRQ before runtime suspend

In the Linux kernel, the following vulnerability has been resolved: ASoC: cs35l33: drain threaded IRQ before runtime suspend cs35l33_runtime_suspend() currently switches the codec into regcache_cache_only(true) and powers it down without first quiescing the threaded IRQ registered by devm_request_threaded_irq(). That leaves a window where cs35l33_irq_thread() can still run after suspend has closed off live register access. A running system can reach this during runtime PM while the driver still has critical fault IRQs unmasked. If the threaded handler runs in that window, it reads volatile INT_STATUS_1/2 after cache_only has been enabled, ignores the regmap_read() failures, and can still drive the AMP_SHORT_RLS, CAL_ERR_RLS, OTE_RLS, and OTW_RLS release paths. Use disable_irq() before entering cache_only/power-off so any in-flight threaded handler is drained and no new IRQ thread can run during the suspended state. Re-enable the IRQ only after runtime_resume() has restored live register access with regcache_sync(). Since probe only warns if devm_request_threaded_irq() fails, track whether the IRQ was actually installed before disabling or re-enabling it.

Published Sep 16, 2026 · Updated Oct 19, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+2

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.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.21%

ahead of 11% of scored CVEs · Oct 19, 2026

Affects

Linux

CVSS base

—

Score not published yet.

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	≥ 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 and < d07799302721d381aef834fac8a11d196894eccb≥ 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 and < 5b5311427e54d9c0d07178ee42df68ba44c2d5ca≥ 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 and < a04722542c76ce861031384480825afded8cc4f4≥ 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 and < 614c2616ea677abfbed917a92bdc5141efff3536≥ 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 and < 6ae98918240585eb2ad32b097c4810f4e2dabe88≥ 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 and < 6e369bc46663b4bfce3d5f8b8ed08e71ecea13a2≥ 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 and < 84cf6acd01a1ec8f30276578a039216327af782e≥ 3333cb7187b9c8d28f7a6405bbe9cec7a10efdc8 and < e074c12c428c633e079154301207a6079a208583 and 1 more version 4.8	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 19, 2026 · 4 reading(s) · max 0.21%

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.

application logs

Timeline

What happened to this CVE, newest first.

2026
Record published
Oct 15, 2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Sep 16, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× References added · Oct 19, 2026 – Oct 19, 2026
1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

10 on the record

git.kernel.org/stable/c/614c2616ea677abfbed917a92bdc5141efff3536
NIST National Vulnerability Database
git.kernel.org/stable/c/d07799302721d381aef834fac8a11d196894eccb
NIST National Vulnerability Database
git.kernel.org/stable/c/e074c12c428c633e079154301207a6079a208583
NIST National Vulnerability Database
git.kernel.org/stable/c/84cf6acd01a1ec8f30276578a039216327af782e
NIST National Vulnerability Database
git.kernel.org/stable/c/6ae98918240585eb2ad32b097c4810f4e2dabe88
NIST National Vulnerability Database
git.kernel.org/stable/c/5b5311427e54d9c0d07178ee42df68ba44c2d5ca
NIST National Vulnerability Database
git.kernel.org/stable/c/6e369bc46663b4bfce3d5f8b8ed08e71ecea13a2
NIST National Vulnerability Database
github.com/advisories/GHSA-h8vg-ghrq-h62w
GitHub Security Advisories
nvd.nist.gov/vuln/detail/CVE-2026-89946
GitHub Security Advisories
git.kernel.org/stable/c/a04722542c76ce861031384480825afded8cc4f4
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Unknown CVE-2026-98866 sched/cache: Introduce task_struct->sched_cache_grp to fix UAF 2d
Unknown CVE-2026-98867 dm-pcache: bound the logical key offset from persistent memory 2d
Unknown CVE-2026-98868 dm-pcache: reject a kset that overruns its segment 2d
Unknown CVE-2026-98856 kprobes: Skip disarmed probes when checking optkprobe overlap 2d
Unknown CVE-2026-98857 ipvs: bound LBLCR and LBLC cache growth 2d
Unknown CVE-2026-98858 io_uring: fix task_work add use-after-free with SQPOLL 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-2026-89946 is "ASoC: cs35l33: drain threaded IRQ before runtime suspend", 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 0.21% 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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