VulnerabilityPublished 6 May 2026Updated 21 Oct 2026

CVE-2025-71272: Linux kernel · most: core: fix resource leak in most_register_interface error paths

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in af0b99b2214a10554adb5b868240d23af6e64e71 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:18 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in af0b99b2214a10554adb5b868240d23af6e64e71, a49028a796d7b94f8e3ab9bd34b18f36be235459, 82f42a13e3d7a07a950ee4fa2d4c74843a3e7ace +2

Exploitation evidence

Disclosed: evidence found.
CVE published 6 May 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 to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c, < af0b99b2214a10554adb5b868240d23af6e64e71	Fixed in af0b99b2214a10554adb5b868240d23af6e64e71
LinuxLinux	Affected ≥ 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c, < a49028a796d7b94f8e3ab9bd34b18f36be235459	Fixed in a49028a796d7b94f8e3ab9bd34b18f36be235459
LinuxLinux	Affected ≥ 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c, < 82f42a13e3d7a07a950ee4fa2d4c74843a3e7ace	Fixed in 82f42a13e3d7a07a950ee4fa2d4c74843a3e7ace
LinuxLinux	Affected ≥ 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c, < 2f483f3817fb0e4209ac5de928778b1da0cc8574	Fixed in 2f483f3817fb0e4209ac5de928778b1da0cc8574
LinuxLinux	Affected ≥ 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c, < 1f4c9d8a1021281750c6cda126d6f8a40cc24e71	Fixed in 1f4c9d8a1021281750c6cda126d6f8a40cc24e71
LinuxLinux	Affected =5.6	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: most: core: fix resource leak in most_register_interface error paths The function most_register_interface() did not correctly release resources if it failed early (before registering the device). In these cases, it returned an error code immediately, leaking the memory allocated for the interface. Fix this by initializing the device early via device_initialize() and calling put_device() on all error paths. The most_register_interface() is expected to call put_device() on error which frees the resources allocated in the caller. The put_device() either calls release_mdev() or dim2_release(), depending on the caller. Switch to using device_add() instead of device_register() to handle the split initialization.

References

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