CVE-2026-80698

Kernel memory corruption via duplicate IDXD frees

Published Aug 28, 2026 · Updated Aug 28, 2026

Double free in the Linux IDXD DMA engine driver allows attackers to corrupt kernel memory through setup or cleanup error paths. The wq, engine, and group release callbacks free their enclosing structures after put_device(), and callers then pass the same allocations to kfree; the wq unwind also frees opcap_bmap and wqcfg twice. The public record identifies no attacker-accessible trigger, required privileges, or outcome beyond memory corruption during affected driver lifecycle failures.

CVSS severityUnavailable
Unscored
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Double free in the Linux IDXD DMA engine driver allows attackers to corrupt kernel memory through setup or cleanup error paths. The wq, engine, and group release callbacks free their enclosing structures after put_device(), and callers then pass the same allocations to kfree; the wq unwind also frees opcap_bmap and wqcfg twice. The public record identifies no attacker-accessible trigger, required privileges, or outcome beyond memory corruption during affected driver lifecycle failures.

The record

CVE
CVE-2026-80698
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=1c28fd5f94d8996f7dd3805bd6a16ed46a5d0886
  2. Affected versionversion=26c219e7522c494f7865a928c81ced84cc7db3ae
  3. Affected versionversion=35ea8721d9e6e74c6847cf4d6c27e883b00b0331
  4. Affected versionversion=394e179f51fce06d6bb8ca5af8fa53f33c718cf4
  5. Affected versionversion=5.11.22 <5.12
  6. Affected versionversion=5.12.5 <5.13
  7. Affected versionversion=5.13
  8. Affected versionversion=7c5dd23e57c14cf7177b8a5e0fd08916e0c60005 <c93a9f652b7373ac8ee5bfcc18a9af76959b6c6c
  9. Affected versionversion=7c5dd23e57c14cf7177b8a5e0fd08916e0c60005 <ec2d428b2e32dd157de8f86a86dd85c5b2c8f45c
  10. Affected versionversion=b09ad63775f58a8de3e228f59fb9543bfd964c9c
  11. Affected versionversion=e6f86fe368cdc14764833a6e8bb59f7a85a40e06

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=1c28fd5f94d8996f7dd3805bd6a16ed46a5d0886; version=26c219e7522c494f7865a928c81ced84cc7db3ae; version=35ea8721d9e6e74c6847cf4d6c27e883b00b0331; version=394e179f51fce06d6bb8ca5af8fa53f33c718cf4; version=5.11.22 <5.12; version=5.12.5 <5.13; version=5.13; version=7c5dd23e57c14cf7177b8a5e0fd08916e0c60005 <c93a9f652b7373ac8ee5bfcc18a9af76959b6c6c; version=7c5dd23e57c14cf7177b8a5e0fd08916e0c60005 <ec2d428b2e32dd157de8f86a86dd85c5b2c8f45c; version=b09ad63775f58a8de3e228f59fb9543bfd964c9c; version=e6f86fe368cdc14764833a6e8bb59f7a85a40e06

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)
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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