VulnerabilityPublished 25 Sep 2026Updated 21 Oct 2026

CVE-2026-98147: Linux kernel · printk: Don't WARN on kthread_run failure.

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in 72dd0ec09e7cc98ed58ddeac26575e5d1ab8a93d : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 72dd0ec09e7cc98ed58ddeac26575e5d1ab8a93d, 15ba35d632c38d879d182577b0af487de0f2dec4, 4e676279798148382497d0e38c0bd51115e64be1 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Sep 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 Linux kernel to 72dd0ec09e7cc98ed58ddeac26575e5d1ab8a93d, 15ba35d632c38d879d182577b0af487de0f2dec4, 4e676279798148382497d0e38c0bd51115e64be1 or 0af43b52fe4b1751b731c067127fdf47cf1b700c.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 76f258bf3f2aae570209319944703a92ac64e29e, < 72dd0ec09e7cc98ed58ddeac26575e5d1ab8a93d	Fixed in 72dd0ec09e7cc98ed58ddeac26575e5d1ab8a93d
LinuxLinux	Affected ≥ 76f258bf3f2aae570209319944703a92ac64e29e, < 15ba35d632c38d879d182577b0af487de0f2dec4	Fixed in 15ba35d632c38d879d182577b0af487de0f2dec4
LinuxLinux	Affected ≥ 76f258bf3f2aae570209319944703a92ac64e29e, < 4e676279798148382497d0e38c0bd51115e64be1	Fixed in 4e676279798148382497d0e38c0bd51115e64be1
LinuxLinux	Affected ≥ 76f258bf3f2aae570209319944703a92ac64e29e, < 0af43b52fe4b1751b731c067127fdf47cf1b700c	Fixed in 0af43b52fe4b1751b731c067127fdf47cf1b700c
LinuxLinux	Affected =6.12	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: printk: Don't WARN on kthread_run failure. Since __kthread_create_on_node() returns -EINTR upon SIGKILL, we should not use WARN_ON() in order to catch kthread_run() failure.

References

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