CVE-2023-52859

Unspecified impact via failed PMU registration cleanup

Published May 21, 2024 · Updated May 11, 2026

Use-after-free in Linux HiSilicon uncore PMU drivers allows attackers to cause unspecified impact during failed PMU registration. On the registration error path, cpuhp_state_remove_instance() runs the offline callback even though the PMU context may never have been allocated, causing the callback to migrate an invalid context. Published information does not establish attacker control over registration failure or a concrete consequence beyond the kernel memory-safety violation.

CVSS severity7.8
High
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

Use-after-free in Linux HiSilicon uncore PMU drivers allows attackers to cause unspecified impact during failed PMU registration. On the registration error path, cpuhp_state_remove_instance() runs the offline callback even though the PMU context may never have been allocated, causing the callback to migrate an invalid context. Published information does not establish attacker control over registration failure or a concrete consequence beyond the kernel memory-safety violation.

The record

CVE
CVE-2023-52859
Published
May 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 21, 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=3bf30882c3c7b6e376d9d6d04082c9aa2d2ac30a <0e1e88bba286621b886218363de07b319d6208b2
  2. Affected versionversion=3bf30882c3c7b6e376d9d6d04082c9aa2d2ac30a <3405f364f82d4f5407a8b4c519dc15d24b847fda
  3. Affected versionversion=3bf30882c3c7b6e376d9d6d04082c9aa2d2ac30a <75bab28ffd05ec8879c197890b1bd1dfec8d3f63
  4. Affected versionversion=3bf30882c3c7b6e376d9d6d04082c9aa2d2ac30a <b660420f449d094b1fabfa504889810b3a63cdd5
  5. Affected versionversion=3bf30882c3c7b6e376d9d6d04082c9aa2d2ac30a <b805cafc604bfdb671fae7347a57f51154afa735
  6. Affected versionversion=5.13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3bf30882c3c7b6e376d9d6d04082c9aa2d2ac30a <0e1e88bba286621b886218363de07b319d6208b2; version=3bf30882c3c7b6e376d9d6d04082c9aa2d2ac30a <3405f364f82d4f5407a8b4c519dc15d24b847fda; version=3bf30882c3c7b6e376d9d6d04082c9aa2d2ac30a <75bab28ffd05ec8879c197890b1bd1dfec8d3f63; version=3bf30882c3c7b6e376d9d6d04082c9aa2d2ac30a <b660420f449d094b1fabfa504889810b3a63cdd5; version=3bf30882c3c7b6e376d9d6d04082c9aa2d2ac30a <b805cafc604bfdb671fae7347a57f51154afa735; version=5.13

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.0OracleCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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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-416Use After Free

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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