VulnerabilityPublished 3 Jun 2026Updated 6 Nov 2026

CVE-2026-46262: Linux kernel · ASoC: fsl_xcvr: Revert fix missing lock in fsl_xcvr_mode_put()

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in b0f74f5d24fe3c73ef1369a811891198b54c1e8e : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:34 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in b0f74f5d24fe3c73ef1369a811891198b54c1e8e, ae5a70e3e87c28edbaf9939cfef1bcbd9615420f, 0886dc6326c3cc596799c4340d342898301cf52a +9

Exploitation evidence

Disclosed: evidence found.
CVE published 3 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected >=5.15.201 <5.15.202 >=6.1.164 <6.1.165 >=6.6.127 <6.6.128 >=6.12.74 <6.12.75 >=6.18.13 <6.18.14	Fixed in b0f74f5d24fe3c73ef1369a811891198b54c1e8e ae5a70e3e87c28edbaf9939cfef1bcbd9615420f 0886dc6326c3cc596799c4340d342898301cf52a 30ffcad5edb56947dccc26f6816ab7a55b21a711 29b2fbe3498da3681a01b34e4a2259f8a1b89448 9f16d96e1222391a6b996a1b676bec14fb91e3b2 9a2a5da002775376498e8814df4a87cd629a3a0c 6.18.14 6.12.75 6.6.128 6.1.165 5.15.202
LinuxLinux	Affected =6.19	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: fsl_xcvr: Revert fix missing lock in fsl_xcvr_mode_put() This reverts commit f51424872760 ("ASoC: fsl_xcvr: fix missing lock in fsl_xcvr_mode_put()"). The original patch attempted to acquire the card->controls_rwsem lock in fsl_xcvr_mode_put(). However, this function is called from the upper ALSA core function snd_ctl_elem_write(), which already holds the write lock on controls_rwsem for the whole put operation. So there is no need to simply hold the lock for fsl_xcvr_activate_ctl() again. Acquiring the read lock while holding the write lock in the same thread results in a deadlock and a hung task, as reported by Alexander Stein.

References

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