VulnerabilityPublished 15 Aug 2026Updated 6 Nov 2026

CVE-2026-72224: Linux kernel · nvdimm/btt: Free arenas on btt_init() error paths

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f4ca396bdd60b4e0a665b2589bfc4ddbea9bda2b : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:19 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

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 f4ca396bdd60b4e0a665b2589bfc4ddbea9bda2b, 5804e6a6912b5a1e47c821777d69191d69a3fe64, 68c967e105d50f885e02b0dbdc9211fd5f84bdcd +5

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Aug 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 ≥ 5212e11fde4d40fa627668b4f2222d20db488f71, < f4ca396bdd60b4e0a665b2589bfc4ddbea9bda2b	Fixed in f4ca396bdd60b4e0a665b2589bfc4ddbea9bda2b
LinuxLinux	Affected ≥ 5212e11fde4d40fa627668b4f2222d20db488f71, < 5804e6a6912b5a1e47c821777d69191d69a3fe64	Fixed in 5804e6a6912b5a1e47c821777d69191d69a3fe64
LinuxLinux	Affected ≥ 5212e11fde4d40fa627668b4f2222d20db488f71, < 68c967e105d50f885e02b0dbdc9211fd5f84bdcd	Fixed in 68c967e105d50f885e02b0dbdc9211fd5f84bdcd
LinuxLinux	Affected ≥ 5212e11fde4d40fa627668b4f2222d20db488f71, < 52a7e7ece79c4b0f406149e19cd2b4b11a6c19e4	Fixed in 52a7e7ece79c4b0f406149e19cd2b4b11a6c19e4
LinuxLinux	Affected ≥ 5212e11fde4d40fa627668b4f2222d20db488f71, < 9ab5293d9ac3f2c4232220e563d04701f5f44607	Fixed in 9ab5293d9ac3f2c4232220e563d04701f5f44607
LinuxLinux	Affected ≥ 5212e11fde4d40fa627668b4f2222d20db488f71, < 7e49684d90faa34ff6d5586be658e986d9d475ac	Fixed in 7e49684d90faa34ff6d5586be658e986d9d475ac

Description

In the Linux kernel, the following vulnerability has been resolved: nvdimm/btt: Free arenas on btt_init() error paths The arenas allocated by discover_arenas() or create_arenas() are not freed on some error paths in btt_init(). This leaks memory when BTT initialization fails. Call free_arenas() from the affected error paths to release the allocations. [ as: commit message and log edits ]

References

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