CVE-2026-80985Network attack vectorHinoki check available

Remote-memory token manipulation via stale buffer reads

Published Sep 11, 2026 · Updated Sep 11, 2026

Out-of-bounds reads in Linux 6.14 allow remote attackers to delete or install SMC-Rv2 remote-memory tokens via crafted LLC messages. smc_llc_rmt_delete_rkey() and smc_llc_save_add_link_rkeys() trust a peer-declared rkey count and read beyond the 44-byte inline message into stale receive-buffer bytes. The path requires an SMC-Rv2 link with a shared receive buffer; it can delete a matching registered token or install up to 255 tokens from stale data.

CVSS severityUnavailable
Unscored
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds reads in Linux 6.14 allow remote attackers to delete or install SMC-Rv2 remote-memory tokens via crafted LLC messages. smc_llc_rmt_delete_rkey() and smc_llc_save_add_link_rkeys() trust a peer-declared rkey count and read beyond the 44-byte inline message into stale receive-buffer bytes. The path requires an SMC-Rv2 link with a shared receive buffer; it can delete a matching registered token or install up to 255 tokens from stale data.

The record

CVE
CVE-2026-80985
Published
Sep 11, 2026
Updated
Sep 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=27ef6a9981fe74191849966a6d5e0400a4008ab8 <0d6f80be8ac5886842640d6526abf3f9a215be75
  2. Affected versionversion=27ef6a9981fe74191849966a6d5e0400a4008ab8 <8d3c1ab82c11d4fadebf817a825fd221b3e197ea
  3. Affected versionversion=27ef6a9981fe74191849966a6d5e0400a4008ab8 <edf30d65e3ac52f886f7d87b1a7449742e79157d
  4. Affected versionversion=6.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=27ef6a9981fe74191849966a6d5e0400a4008ab8 <0d6f80be8ac5886842640d6526abf3f9a215be75; version=27ef6a9981fe74191849966a6d5e0400a4008ab8 <8d3c1ab82c11d4fadebf817a825fd221b3e197ea; version=27ef6a9981fe74191849966a6d5e0400a4008ab8 <edf30d65e3ac52f886f7d87b1a7449742e79157d; version=6.14

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo