CVE-2026-80790Hinoki check available

Kernel memory corruption via invalid LS IOD free

Published Sep 4, 2026 · Updated Sep 4, 2026

Invalid free in affected Linux kernel nvmet-fc revisions allows local users to corrupt kernel memory during target-port creation. nvmet_fc_alloc_ls_iodlist() advances the iod pointer while building the LS IOD array, then its unwind path decrements that pointer past the allocation base and passes it to kfree after a request-buffer allocation or response-buffer DMA mapping failure. Reachability requires privileged nvmet-fc target configuration and the relevant failure during target-port creation; the demonstrated result is a KASAN-detected invalid free.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Invalid free in affected Linux kernel nvmet-fc revisions allows local users to corrupt kernel memory during target-port creation. nvmet_fc_alloc_ls_iodlist() advances the iod pointer while building the LS IOD array, then its unwind path decrements that pointer past the allocation base and passes it to kfree after a request-buffer allocation or response-buffer DMA mapping failure. Reachability requires privileged nvmet-fc target configuration and the relevant failure during target-port creation; the demonstrated result is a KASAN-detected invalid free.

The record

CVE
CVE-2026-80790
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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?

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  1. Affected versionversion=4.10
  2. Affected versionversion=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <1a8f007faefe8c226ec65896589f8d59b0a8d5a5
  3. Affected versionversion=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <371fb1bf902adaa59be32bd7e904a5317e604fd0
  4. Affected versionversion=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <449e9c4f8db84ad9d9bb288029b230bcf590faa2
  5. Affected versionversion=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <8bce9cd08aae4283badf8ddc11fbb6f57b75a81e
  6. Affected versionversion=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <94334ea92f4d7535f66f86e33681efa94827eddc
  7. Affected versionversion=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <b189c6e408896ccc23d2e76d7738847cdebf1532
  8. Affected versionversion=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <ba98d6796d12258e837ece065d2ecb59d76ce4ff
  9. Affected versionversion=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <bb9489f0dce58da730d3479588d6710d7a2c1b45
  10. Affected versionversion=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <d094582cce9c08516d714e7436a8f3b9211dda90

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=4.10; version=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <1a8f007faefe8c226ec65896589f8d59b0a8d5a5; version=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <371fb1bf902adaa59be32bd7e904a5317e604fd0; version=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <449e9c4f8db84ad9d9bb288029b230bcf590faa2; version=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <8bce9cd08aae4283badf8ddc11fbb6f57b75a81e; version=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <94334ea92f4d7535f66f86e33681efa94827eddc; version=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <b189c6e408896ccc23d2e76d7738847cdebf1532; version=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <ba98d6796d12258e837ece065d2ecb59d76ce4ff; version=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <bb9489f0dce58da730d3479588d6710d7a2c1b45; version=c53432030d86429dc9fe5adc3d68cb9d1343b0b2 <d094582cce9c08516d714e7436a8f3b9211dda90

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

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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