CVE-2026-72152

Local service interruption via incorrect TPM wait state

Published Aug 15, 2026 · Updated Aug 15, 2026

Incorrect synchronization in the Linux TPM TIS SPI driver allows local users to interrupt service through the IRQ wait path. wait_event_interruptible_timeout() evaluates its condition after setting the task to TASK_INTERRUPTIBLE, allowing spi_bus_lock() to take a mutex in an atomic-sleep context. Reachability requires the TPM TIS SPI IRQ wait path with CONFIG_DEBUG_ATOMIC_SLEEP; the documented result is a kernel warning with possible system instability, not data access.

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

Incorrect synchronization in the Linux TPM TIS SPI driver allows local users to interrupt service through the IRQ wait path. wait_event_interruptible_timeout() evaluates its condition after setting the task to TASK_INTERRUPTIBLE, allowing spi_bus_lock() to take a mutex in an atomic-sleep context. Reachability requires the TPM TIS SPI IRQ wait path with CONFIG_DEBUG_ATOMIC_SLEEP; the documented result is a kernel warning with possible system instability, not data access.

The record

CVE
CVE-2026-72152
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-821, 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=1a339b658d9dbe1471f67b78237cf8fa08bbbeb5 <4bb3e1bc142dc9c3240ceed1b3ab031aa9cb1723
  2. Affected versionversion=1a339b658d9dbe1471f67b78237cf8fa08bbbeb5 <6b068a97958aa00a901a9b5083d74114b21f7b66
  3. Affected versionversion=1a339b658d9dbe1471f67b78237cf8fa08bbbeb5 <ba33b4f9d3423accd2c91a0b0b0680cd589922f2
  4. Affected versionversion=1a339b658d9dbe1471f67b78237cf8fa08bbbeb5 <bb63a0530e8e6de3aaf29cd5ba487db2490128ef
  5. Affected versionversion=1a339b658d9dbe1471f67b78237cf8fa08bbbeb5 <c0c9cfb3b75def8bf200a2d4db09015806acfeaf
  6. Affected versionversion=1a339b658d9dbe1471f67b78237cf8fa08bbbeb5 <c9acbe38797bc1aa3c22a1ab72452e210af6e0ff
  7. Affected versionversion=4.14.71 <4.15
  8. Affected versionversion=4.18.9 <4.19
  9. Affected versionversion=4.19
  10. Affected versionversion=4.9.128 <4.10
  11. Affected versionversion=cd4ae0b05126cc9461a2e50ccb745e5583cc91e2
  12. Affected versionversion=cf503dbe5c22c6ab9797e1cf864a11597d711c3a
  13. Affected versionversion=d229e7ecc0cb29996688f0fa98c5eb6128b81e3a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1a339b658d9dbe1471f67b78237cf8fa08bbbeb5 <4bb3e1bc142dc9c3240ceed1b3ab031aa9cb1723; version=1a339b658d9dbe1471f67b78237cf8fa08bbbeb5 <6b068a97958aa00a901a9b5083d74114b21f7b66; version=1a339b658d9dbe1471f67b78237cf8fa08bbbeb5 <ba33b4f9d3423accd2c91a0b0b0680cd589922f2; version=1a339b658d9dbe1471f67b78237cf8fa08bbbeb5 <bb63a0530e8e6de3aaf29cd5ba487db2490128ef; version=1a339b658d9dbe1471f67b78237cf8fa08bbbeb5 <c0c9cfb3b75def8bf200a2d4db09015806acfeaf; version=1a339b658d9dbe1471f67b78237cf8fa08bbbeb5 <c9acbe38797bc1aa3c22a1ab72452e210af6e0ff; version=4.14.71 <4.15; version=4.18.9 <4.19; version=4.19; version=4.9.128 <4.10; version=cd4ae0b05126cc9461a2e50ccb745e5583cc91e2; version=cf503dbe5c22c6ab9797e1cf864a11597d711c3a; version=d229e7ecc0cb29996688f0fa98c5eb6128b81e3a

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.3Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-821Incorrect Synchronization
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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