VulnerabilityPublished 25 Sep 2026Updated 19 Oct 2026

CVE-2026-97618: Linux kernel · io_uring/net: don't overconsume buffers when using MSG_TRUNC

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in 6028b543884f8735e057ec9eea4908cd61cab230 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 6028b543884f8735e057ec9eea4908cd61cab230, 927d96f91c582b319d104ecf50ec935a8dc29193, 41d24d2fb168fa05fcaf9ec4e55478411dbbf8e1 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Sep 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 Linux kernel to 6028b543884f8735e057ec9eea4908cd61cab230, 927d96f91c582b319d104ecf50ec935a8dc29193, 41d24d2fb168fa05fcaf9ec4e55478411dbbf8e1 or 2e70ea75c7bb38a6dc212975f887310f14f7c043.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ ae98dbf43d755b4e111fcd086e53939bef3e9a1a, < 6028b543884f8735e057ec9eea4908cd61cab230	Fixed in 6028b543884f8735e057ec9eea4908cd61cab230
LinuxLinux	Affected ≥ ae98dbf43d755b4e111fcd086e53939bef3e9a1a, < 927d96f91c582b319d104ecf50ec935a8dc29193	Fixed in 927d96f91c582b319d104ecf50ec935a8dc29193
LinuxLinux	Affected ≥ ae98dbf43d755b4e111fcd086e53939bef3e9a1a, < 41d24d2fb168fa05fcaf9ec4e55478411dbbf8e1	Fixed in 41d24d2fb168fa05fcaf9ec4e55478411dbbf8e1
LinuxLinux	Affected ≥ ae98dbf43d755b4e111fcd086e53939bef3e9a1a, < 2e70ea75c7bb38a6dc212975f887310f14f7c043	Fixed in 2e70ea75c7bb38a6dc212975f887310f14f7c043
LinuxLinux	Affected =6.12	Fixed in–

AI-suggested

A fix for this vulnerability has been implemented in the Linux kernel. Users should update to the fixed kernel versions corresponding to the commits referenced (e.g., 6028b543884f8735e057ec9eea4908cd61cab230 and others). No additional mitigation actions are indicated.

Description

A vulnerability in the Linux kernel's io_uring/net subsystem involving improper buffer consumption when using the MSG_TRUNC flag with recv/recvmsg calls has been fixed. The issue caused io_uring to advance more of the buffer ring than was actually filled when the incoming packet was larger than the provided buffer. This could lead to incorrect buffer handling during network packet reception.

Impact

The vulnerability could cause io_uring to overconsume buffers when processing truncated network packets, potentially leading to buffer mismanagement. While no direct exploit or in-the-wild usage is reported, this flaw could affect kernel network buffer handling correctness and stability when using io_uring with MSG_TRUNC. No direct security impact such as privilege escalation or code execution is described in the provided data.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 13:36 UTC

Technical details

References

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