CVE-2021-47043

Resource leak via failed Venus device probe

Published Feb 28, 2024 · Updated May 11, 2026

Resource leak in Linux's Venus driver in 5.5 through 5.10.36, 5.11 through 5.11.20, and 5.12 through 5.12.3 allows local users to leak handles. In venus_probe(), of_icc_get() obtains an interconnect resource, but subsequent error exits fail to undo that successful acquisition. Reachability requires the Qualcomm Venus probe path to pass that call and then encounter a later error; the published record identifies only a resource leak.

CVSS severity5.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in Linux's Venus driver in 5.5 through 5.10.36, 5.11 through 5.11.20, and 5.12 through 5.12.3 allows local users to leak handles. In venus_probe(), of_icc_get() obtains an interconnect resource, but subsequent error exits fail to undo that successful acquisition. Reachability requires the Qualcomm Venus probe path to pass that call and then encounter a later error; the published record identifies only a resource leak.

The record

CVE
CVE-2021-47043
Published
Feb 28, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 28, 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=32f0a6ddc8c98a1aade2bf3d07c79d5d2c6ceb9a <00b68a7478343afdf83f30c43e64db5296057030
  2. Affected versionversion=32f0a6ddc8c98a1aade2bf3d07c79d5d2c6ceb9a <5a465c5391a856a0c1e9554964d660676c35d1b2
  3. Affected versionversion=32f0a6ddc8c98a1aade2bf3d07c79d5d2c6ceb9a <711acdf0228dc71601247f28b56f13e850e395c8
  4. Affected versionversion=32f0a6ddc8c98a1aade2bf3d07c79d5d2c6ceb9a <940d01eceb3a7866fbfca136a55a5625fc75a565
  5. Affected versionversion=5.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=32f0a6ddc8c98a1aade2bf3d07c79d5d2c6ceb9a <00b68a7478343afdf83f30c43e64db5296057030; version=32f0a6ddc8c98a1aade2bf3d07c79d5d2c6ceb9a <5a465c5391a856a0c1e9554964d660676c35d1b2; version=32f0a6ddc8c98a1aade2bf3d07c79d5d2c6ceb9a <711acdf0228dc71601247f28b56f13e850e395c8; version=32f0a6ddc8c98a1aade2bf3d07c79d5d2c6ceb9a <940d01eceb3a7866fbfca136a55a5625fc75a565; version=5.5

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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

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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