CVE-2024-38597

System hang via sleeping sungem poll callback

Published Jun 19, 2024 · Updated May 11, 2026

Improper locking in the Linux sungem driver from 3.1 allows local users to hang the system through netpoll activity. The gem_poll_controller callback disables interrupts and enters a path that can sleep, although netpoll requires a non-sleeping interrupt-disabled context. Reachability requires the sungem network driver and netpoll use; the documented consequence is an availability-only deadlock.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in the Linux sungem driver from 3.1 allows local users to hang the system through netpoll activity. The gem_poll_controller callback disables interrupts and enters a path that can sleep, although netpoll requires a non-sleeping interrupt-disabled context. Reachability requires the sungem network driver and netpoll use; the documented consequence is an availability-only deadlock.

The record

CVE
CVE-2024-38597
Published
Jun 19, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 19, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=3.1
  2. Affected versionversion=fe09bb619096a0aa139210748ddc668c2dbe2308 <476adb3bbbd7886e8251d3b9ce2d3c3e680f35d6
  3. Affected versionversion=fe09bb619096a0aa139210748ddc668c2dbe2308 <5de5aeb98f9a000adb0db184e32765e4815d860b
  4. Affected versionversion=fe09bb619096a0aa139210748ddc668c2dbe2308 <6400d205fbbcbcf9b8510157e1f379c1d7e2e937
  5. Affected versionversion=fe09bb619096a0aa139210748ddc668c2dbe2308 <ac0a230f719b02432d8c7eba7615ebd691da86f4
  6. Affected versionversion=fe09bb619096a0aa139210748ddc668c2dbe2308 <e22b23f5888a065d084e87db1eec639c445e677f
  7. Affected versionversion=fe09bb619096a0aa139210748ddc668c2dbe2308 <faf94f1eb8a34b2c31b2042051ef36f63420ecce
  8. Affected versionversion=fe09bb619096a0aa139210748ddc668c2dbe2308 <fbeeb55dbb33d562149c57e794f06b7414e44289

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.1; version=fe09bb619096a0aa139210748ddc668c2dbe2308 <476adb3bbbd7886e8251d3b9ce2d3c3e680f35d6; version=fe09bb619096a0aa139210748ddc668c2dbe2308 <5de5aeb98f9a000adb0db184e32765e4815d860b; version=fe09bb619096a0aa139210748ddc668c2dbe2308 <6400d205fbbcbcf9b8510157e1f379c1d7e2e937; version=fe09bb619096a0aa139210748ddc668c2dbe2308 <ac0a230f719b02432d8c7eba7615ebd691da86f4; version=fe09bb619096a0aa139210748ddc668c2dbe2308 <e22b23f5888a065d084e87db1eec639c445e677f; version=fe09bb619096a0aa139210748ddc668c2dbe2308 <faf94f1eb8a34b2c31b2042051ef36f63420ecce; version=fe09bb619096a0aa139210748ddc668c2dbe2308 <fbeeb55dbb33d562149c57e794f06b7414e44289

Published CVSS scores

5.5NIST NVDCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
T1499Endpoint Denial of Service

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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