VulnerabilityPublished 15 Aug 2026

CVE-2026-68468: Linux kernel · mtd: virt-concat: free duplicate generated name

Source GCVE Database

Not known to be exploited.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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.

ghsa-p8fh-7hcc-pcwh

What to do

AI-suggested

A fix has been applied to the Linux kernel to free the duplicate generated name string properly. Users should update to the patched kernel version once available. Patch status is not explicitly confirmed in the provided data; therefore, check the official Linux kernel advisories or vendor sources for the exact fixed versions and remediation guidance.

Description

A vulnerability in the Linux kernel's mtd subsystem related to virt-concat was resolved. The issue involved a memory management flaw where a duplicate generated name string was not freed during MTD registration, potentially causing a memory leak. The fix ensures the temporary name is freed properly before continuing.

Impact

The flaw causes a memory leak in the Linux kernel's mtd subsystem during device registration. While this does not directly lead to code execution or privilege escalation, repeated exploitation could degrade system stability or exhaust memory resources.

Summary

The vulnerability in the Linux kernel affects the mtd subsystem's virt-concat functionality. During every MTD registration, the function mtd_virt_concat_create_join() generates a name string. If a virtual concat with the same name is already registered, the function takes a branch that skips freeing the newly allocated duplicate name string, leading to a memory leak. The patch corrects this by freeing the temporary name before proceeding to the next item.

References

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