CVE-2026-80743

Kernel crash via probe-time NULL dereference

Published Sep 3, 2026 · Updated Sep 3, 2026

NULL pointer dereference in Linux 5.1 and later causes a kernel crash if a Xilinx ASoC interrupt occurs during driver probe. The formatter PCM handlers call dev_get_drvdata() before probe stores the driver data, then pass the resulting NULL pointer to readl(). Exposure requires the Xilinx formatter device and an interrupt in the interval after IRQ registration but before probe completes; the documented consequence is a crash.

CVSS severityUnavailable
Unscored
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

NULL pointer dereference in Linux 5.1 and later causes a kernel crash if a Xilinx ASoC interrupt occurs during driver probe. The formatter PCM handlers call dev_get_drvdata() before probe stores the driver data, then pass the resulting NULL pointer to readl(). Exposure requires the Xilinx formatter device and an interrupt in the interval after IRQ registration but before probe completes; the documented consequence is a crash.

The record

CVE
CVE-2026-80743
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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=5.1
  2. Affected versionversion=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <09e4c486348e176c083f8bee9169ae8f408cf8d1
  3. Affected versionversion=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <0d58a70b6dc7b65772e3ef7c43beb91882cf9ed5
  4. Affected versionversion=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <721cfeb0b9572084435695ae535411b921d1ea68
  5. Affected versionversion=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <7d857aec162fb02d10ce326aecc1ac7509c31f43
  6. Affected versionversion=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <a85315f2eb06adc5597a7103e1910fc7d0d35ffd
  7. Affected versionversion=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <b4ef887bee4d3c177adac5d1eab8b2de31b08ac3
  8. Affected versionversion=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <f12afefb7b01f94d6d66d397f323a9914edbf70e
  9. Affected versionversion=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <f51a540b14eecb8667bbe450192318271b87631e

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=5.1; version=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <09e4c486348e176c083f8bee9169ae8f408cf8d1; version=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <0d58a70b6dc7b65772e3ef7c43beb91882cf9ed5; version=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <721cfeb0b9572084435695ae535411b921d1ea68; version=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <7d857aec162fb02d10ce326aecc1ac7509c31f43; version=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <a85315f2eb06adc5597a7103e1910fc7d0d35ffd; version=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <b4ef887bee4d3c177adac5d1eab8b2de31b08ac3; version=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <f12afefb7b01f94d6d66d397f323a9914edbf70e; version=6f6c3c36f0917be24587eeba818ab4fdfcb5465a <f51a540b14eecb8667bbe450192318271b87631e

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)
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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