CVE-2026-74265

Network-service interruption via zeroed MANA queue identifier

Published Aug 15, 2026 · Updated Aug 15, 2026

Denial of service in the Linux kernel MANA driver allows local users to disrupt networking through a failed queue creation. mana_gd_create_mana_wq_cq() leaves queue->id zero until firmware supplies an ID, so early failure makes cleanup clear gc->cq_table[0] for an unrelated live completion queue. The path requires local low-privileged access and a MANA queue-creation failure; exploitation can silently break an active completion queue and interrupt network service.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel MANA driver allows local users to disrupt networking through a failed queue creation. mana_gd_create_mana_wq_cq() leaves queue->id zero until firmware supplies an ID, so early failure makes cleanup clear gc->cq_table[0] for an unrelated live completion queue. The path requires local low-privileged access and a MANA queue-creation failure; exploitation can silently break an active completion queue and interrupt network service.

The record

CVE
CVE-2026-74265
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=5.13
  2. Affected versionversion=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <150590d9ab0dbeb0087193058363819d4c82a00f
  3. Affected versionversion=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <372e7318af379eee29ab6e60848ce7d7db76c85a
  4. Affected versionversion=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <5985474e1cb4034680fac2145497a94b0860be50
  5. Affected versionversion=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <62ce489acb428a936bdf243e7b92b3eb341447cf
  6. Affected versionversion=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <8e52a247d9aa979d43eb9ff1e445b9b3bf229d4d
  7. Affected versionversion=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <a493cbb6b11acd4adc93397a4b12bd460d47620d
  8. Affected versionversion=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <c6662f3ad1c7c3549a1c39545651833220b0de89

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <150590d9ab0dbeb0087193058363819d4c82a00f; version=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <372e7318af379eee29ab6e60848ce7d7db76c85a; version=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <5985474e1cb4034680fac2145497a94b0860be50; version=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <62ce489acb428a936bdf243e7b92b3eb341447cf; version=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <8e52a247d9aa979d43eb9ff1e445b9b3bf229d4d; version=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <a493cbb6b11acd4adc93397a4b12bd460d47620d; version=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <c6662f3ad1c7c3549a1c39545651833220b0de89

Published CVSS scores

5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1.9Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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