VulnerabilityPublished 10 Jul 2025Updated 5 Nov 2026

CVE-2025-38302: Linux kernel · block: don't use submit_bio_noacct_nocheck in blk_zone_wplug_bio_work

Affects Linux kernelSource CVE Database V5

Compare

Not known to be exploited · fixed in cf625013d8741c01407bbb4a60c111b61b9fa69d : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:19 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, 2026-11-05.

Patch

Available – fixed in cf625013d8741c01407bbb4a60c111b61b9fa69d, 6ffae5d53f704d300cc73b06b4ea99e4507f7cf1, 0fccb6773b1f4f992e435582cf8e050de421b678

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Jul 2025
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 5 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 Linux kernel to cf625013d8741c01407bbb4a60c111b61b9fa69d, 6ffae5d53f704d300cc73b06b4ea99e4507f7cf1 or 0fccb6773b1f4f992e435582cf8e050de421b678.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 9b1ce7f0c6f82e241196febabddba5fab66c8f05, < cf625013d8741c01407bbb4a60c111b61b9fa69d	Fixed in cf625013d8741c01407bbb4a60c111b61b9fa69d
LinuxLinux	Affected ≥ 9b1ce7f0c6f82e241196febabddba5fab66c8f05, < 6ffae5d53f704d300cc73b06b4ea99e4507f7cf1	Fixed in 6ffae5d53f704d300cc73b06b4ea99e4507f7cf1
LinuxLinux	Affected ≥ 9b1ce7f0c6f82e241196febabddba5fab66c8f05, < 0fccb6773b1f4f992e435582cf8e050de421b678	Fixed in 0fccb6773b1f4f992e435582cf8e050de421b678
LinuxLinux	Affected =6.10	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: block: don't use submit_bio_noacct_nocheck in blk_zone_wplug_bio_work Bios queued up in the zone write plug have already gone through all all preparation in the submit_bio path, including the freeze protection. Submitting them through submit_bio_noacct_nocheck duplicates the work and can can cause deadlocks when freezing a queue with pending bio write plugs. Go straight to ->submit_bio or blk_mq_submit_bio to bypass the superfluous extra freeze protection and checks.

References

Community reviews

Loading reviews…