VulnerabilityPublished 14 Feb 2026Updated 5 Nov 2026

CVE-2025-71220: Linux kernel · smb/server: call ksmbd_session_rpc_close() on error path in create_smb2_pipe()

Affects Linux kernelSource CVE Database V5

Compare

Not known to be exploited · fixed in fdda836fcee6fdbcccc24e3679097efb583f581f : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:34 UTC

Severity

Unrated

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

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, 2026-11-05.

Patch

Available – fixed in fdda836fcee6fdbcccc24e3679097efb583f581f, ac18761b530b5dd40f59af8a25902282e5512854, a2c68e256fb7a4ac34154c6e865a1389acca839f +5

Exploitation evidence

Disclosed: evidence found.
CVE published 14 Feb 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 5 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 >=5.15.145 <5.15.200 >=6.1.71 <6.1.163	Fixed in fdda836fcee6fdbcccc24e3679097efb583f581f ac18761b530b5dd40f59af8a25902282e5512854 a2c68e256fb7a4ac34154c6e865a1389acca839f 7c28f8eef5ac5312794d8a52918076dcd787e53b 6.1.163 5.15.200 04dd114b682a4ccaeba2c2bad049c8b50ce740d8 2b7b4df87fe6f2db6ee45f475de6b37b8b8e5d29
LinuxLinux	Affected =6.6	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: smb/server: call ksmbd_session_rpc_close() on error path in create_smb2_pipe() When ksmbd_iov_pin_rsp() fails, we should call ksmbd_session_rpc_close().

References

Community reviews

Loading reviews…