CVE-2026-72358

Invalid cursor access via purged Xe buffers

Published Aug 15, 2026 · Updated Aug 15, 2026

Improper cursor handling in Linux 7.1 allows attackers to trigger invalid cursor access through purged Xe buffer objects. The xe_pt_stage_bind() path leaves xe_res_cursor uninitialized for purged objects, while xe_pt_hugepte_possible() and xe_pt_scan_64K() still call xe_res_dma() and xe_res_next(). The record identifies a kernel warning but no attacker-controlled entry point or consequence beyond invalid access, so operational impact is unspecified.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper cursor handling in Linux 7.1 allows attackers to trigger invalid cursor access through purged Xe buffer objects. The xe_pt_stage_bind() path leaves xe_res_cursor uninitialized for purged objects, while xe_pt_hugepte_possible() and xe_pt_scan_64K() still call xe_res_dma() and xe_res_next(). The record identifies a kernel warning but no attacker-controlled entry point or consequence beyond invalid access, so operational impact is unspecified.

The record

CVE
CVE-2026-72358
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

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=7.1
  2. Affected versionversion=ad9843aac91a1eda12912a4922042ea04cfc29dc <2b6b3f98d0e93856bee38699b783c71cb0e9d67f
  3. Affected versionversion=ad9843aac91a1eda12912a4922042ea04cfc29dc <8a0fb57675be578c4db19deb4298ed08a70f0f1a

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=7.1; version=ad9843aac91a1eda12912a4922042ea04cfc29dc <2b6b3f98d0e93856bee38699b783c71cb0e9d67f; version=ad9843aac91a1eda12912a4922042ea04cfc29dc <8a0fb57675be578c4db19deb4298ed08a70f0f1a

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.

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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)
VectorUnavailable
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

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Your stack

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