VulnerabilityPublished 17 Sep 2026Updated 30 Oct 2026

CVE-2026-93150: Linux kernel · cgroup/cpuset: Make nr_deadline_tasks an atomic_t

Source GCVE Database

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Authoritative record:CVE-2026-93150· Medium

Not known to be exploited · fixed in e5965ae3f7c918151b87e5c925b7978afbeaf638 : update Linux kernel when convenient.

Data as of 30 Oct 2026, 18:03 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Patch: Available – fixed in e5965ae3f7c918151b87e5c925b7978afbeaf638, e422b32e6a57269ca8164c60674a78bee85cf5fb, 642648fa7595241e4d491add5007bc33f11defb5 +7

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 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 30 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.
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.

ghsa-rm22-rvmg-2466

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected >=6.1.50 <6.1.191 >=5.10.193 <5.11 >=5.15.129 <5.16 >=6.4.13 <6.5	Fixed in e5965ae3f7c918151b87e5c925b7978afbeaf638 e422b32e6a57269ca8164c60674a78bee85cf5fb 642648fa7595241e4d491add5007bc33f11defb5 95220e1f18f6321008f021abc7d6f581f64bcb82 4987d336abf3fa575a2d953f69e11154ac9802c3 78d9daf5e13ad1448b7dfebac949936710ec7565 6.5 6.1.191 5.16 5.11
LinuxLinux	Affected =6.5	Fixed in–

AI-suggested

A fix is available that changes the nr_deadline_tasks variable to an atomic type to ensure atomic updates and reduce race conditions. Users should apply the official Linux kernel patch that implements this change. Additional concurrency issues remain and may require future updates.

Description

A race condition in the Linux kernel's cpuset subsystem involving the nr_deadline_tasks variable could lead to data corruption. The variable was not previously updated atomically, causing potential inconsistencies when concurrent updates occur. This issue has been addressed by changing nr_deadline_tasks to an atomic type to ensure atomic updates. The fix mitigates some race conditions but does not resolve all related concurrency issues, which are planned to be addressed in future patches.

References

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