CVE-2026-68425

Resource exhaustion via unmatched RMPP response reassembly

Published Aug 10, 2026 · Updated Aug 10, 2026

Resource exhaustion in affected Linux kernels allows attackers to disrupt InfiniBand management traffic using RMPP DATA responses. The IB/mad receive path enters ib_process_rmpp_recv_wc before ib_find_send_mad verifies the full transaction ID and source, so unsolicited segments allocate or extend reassembly state. A node on the same InfiniBand fabric can exhaust kernel memory and stall MAD processing, breaking subnet administration and path resolution.

CVSS severity7.1
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in affected Linux kernels allows attackers to disrupt InfiniBand management traffic using RMPP DATA responses. The IB/mad receive path enters ib_process_rmpp_recv_wc before ib_find_send_mad verifies the full transaction ID and source, so unsolicited segments allocate or extend reassembly state. A node on the same InfiniBand fabric can exhaust kernel memory and stall MAD processing, breaking subnet administration and path resolution.

The record

CVE
CVE-2026-68425
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.001
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=2.6.13
  2. Affected versionversion=fa619a77046bef30478697aba0553991033afb8e <6e1bd7f590b0ccfee07f7fe1d48b92059bd37d72
  3. Affected versionversion=fa619a77046bef30478697aba0553991033afb8e <98d2d468b4faa1fdc68c0c6c238389906ee3490c
  4. Affected versionversion=fa619a77046bef30478697aba0553991033afb8e <ad9c9ad3204f63a46f0f7de29687a8e512f05e29
  5. Affected versionversion=fa619a77046bef30478697aba0553991033afb8e <d2e52d610b9b09694261632340b801a421e0b0c5
  6. Affected versionversion=fa619a77046bef30478697aba0553991033afb8e <dfa535c94406c03d3f0c869ef3ba5528e395737c

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.13; version=fa619a77046bef30478697aba0553991033afb8e <6e1bd7f590b0ccfee07f7fe1d48b92059bd37d72; version=fa619a77046bef30478697aba0553991033afb8e <98d2d468b4faa1fdc68c0c6c238389906ee3490c; version=fa619a77046bef30478697aba0553991033afb8e <ad9c9ad3204f63a46f0f7de29687a8e512f05e29; version=fa619a77046bef30478697aba0553991033afb8e <d2e52d610b9b09694261632340b801a421e0b0c5; version=fa619a77046bef30478697aba0553991033afb8e <dfa535c94406c03d3f0c869ef3ba5528e395737c

Published CVSS scores

7.1kernel.orgCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

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.

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No observations available

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

Weakness, pattern, technique

T1499.001OS Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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