VulnerabilityPublished 15 Aug 2026Updated 21 Oct 2026

CVE-2026-74375: Linux kernel · md/raid1,raid10: fix deadlock in read error recovery path

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in ea2d1d2ebf60b70b602a92261a567d5fc4575eab : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in ea2d1d2ebf60b70b602a92261a567d5fc4575eab, 0889242775340e2c5b69b1590bd71335dd4fdeda, 38777f014c37972868f1733a651c85288bb8a757 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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 ≥ bb2a9acefaf9ce5bbc1e70f407e34599233d0243, < ea2d1d2ebf60b70b602a92261a567d5fc4575eab	Fixed in ea2d1d2ebf60b70b602a92261a567d5fc4575eab
LinuxLinux	Affected ≥ bb2a9acefaf9ce5bbc1e70f407e34599233d0243, < 0889242775340e2c5b69b1590bd71335dd4fdeda	Fixed in 0889242775340e2c5b69b1590bd71335dd4fdeda
LinuxLinux	Affected ≥ bb2a9acefaf9ce5bbc1e70f407e34599233d0243, < 38777f014c37972868f1733a651c85288bb8a757	Fixed in 38777f014c37972868f1733a651c85288bb8a757
LinuxLinux	Affected ≥ bb2a9acefaf9ce5bbc1e70f407e34599233d0243, < 923a6f3172a362d6b2ff12386e376e0e47188f78	Fixed in 923a6f3172a362d6b2ff12386e376e0e47188f78
LinuxLinux	Affected ≥ bb2a9acefaf9ce5bbc1e70f407e34599233d0243, < 7b15c24f805339a585cfe7d72f446b7e88b9bcc0	Fixed in 7b15c24f805339a585cfe7d72f446b7e88b9bcc0
LinuxLinux	Affected =6.6	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid1,raid10: fix deadlock in read error recovery path raid1d and raid10d may resubmit a split md cloned bio while handling a read error. In this case, resubmitting the bio can lead to a deadlock if the array is suspended before md_handle_request() acquires an active_io reference via percpu_ref_tryget_live(). Since the cloned bio already holds an active_io reference, trying to acquire another reference via percpu_ref_tryget_live() can lead to a deadlock while the array is suspended. Fix this by using percpu_ref_get() for md cloned bios.

References

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