CVE-2023-52686

MEDIUMNVD 5.55.5—

5.5

In the Linux kernel, the following vulnerability has been resolved:

powerpc/powernv: Add a null pointer check in opal_event_init()

kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 2.2%
KEV: Not listed

Published

May 17, 2024

Last Modified

March 4, 2025

References (17)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8422d179cf46889c15ceff9ede48c5bfa4e7f0b4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8649829a1dd25199bbf557b2621cedb4bf9b3050
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9a523e1da6d88c2034f946adfa4f74b236c95ca9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a14c55eb461d630b836f80591d8caf1f74e62877
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c0b111ea786ddcc8be0682612830796ece9436c7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e08c2e275fa1874de945b87093f925997722ee42
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e6ad05e3ae9c84c5a71d7bb2d44dc845ae7990cf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e93d7cf4c1ddbcd846739e7ad849f955a4f18031
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8422d179cf46889c15ceff9ede48c5bfa4e7f0b4
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8649829a1dd25199bbf557b2621cedb4bf9b3050
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9a523e1da6d88c2034f946adfa4f74b236c95ca9
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a14c55eb461d630b836f80591d8caf1f74e62877
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c0b111ea786ddcc8be0682612830796ece9436c7
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e08c2e275fa1874de945b87093f925997722ee42
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e6ad05e3ae9c84c5a71d7bb2d44dc845ae7990cf

Patch Availability(11)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-tools-oem-22.04d (6.5.0.1024.26) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-laptop-23.10 (6.5.0.1017.20) @ mantic	2026-05-24	ubuntu
ubuntu	linux-tools-oracle-64k (6.5.0.1024.26) @ mantic	2026-05-24	ubuntu
ubuntu	linux-tools-nvidia-hwe-22.04-edge (6.5.0.1021.29) @ jammy	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-22.04 (6.5.0.41.41~22.04.2) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-oracle-64k (6.5.0.1024.24~22.04.1) @ jammy	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-22.04-edge (6.5.0.41.41) @ mantic	2026-05-24	ubuntu
ubuntu	linux-tools-starfive (6.5.0.1015.16~22.04.1) @ jammy	2026-05-24	ubuntu
redhat	kernel-0:5.14.0-427.85.1.el9_4	2025-09-02	redhat
redhat	kernel-0:5.14.0-503.11.1.el9_5	2024-11-12	redhat
redhat	kernel-0:4.18.0-553.8.1.el8_10	2024-07-02	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-476NULL Pointer Dereference

All Vendor Advisories

(11)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-06 13:46 UTCepss_batch
2026-06-06 13:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch

Frequently asked(5)

What is CVE-2023-52686?

CVE-2023-52686 is a medium vulnerability published on May 17, 2024. In the Linux kernel, the following vulnerability has been resolved: powerpc/powernv: Add a null pointer check in opaleventinit() kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure.

When was CVE-2023-52686 disclosed?

CVE-2023-52686 was first published in the National Vulnerability Database on May 17, 2024, with the most recent update on March 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-52686 actively exploited?

CVE-2023-52686 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-52686?

CVE-2023-52686 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2023-52686?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-52686, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-52686

Published

Last Modified

References (17)

Patch Availability(11)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-52686?

Same vendor

Same CWE

CVE-2023-52686

📅 Published

🔄 Last Modified

🔗 References (17)

Patch Availability(11)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-52686?

🔗 Related CVEs(same vendor + same CWE)

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References (17)

Frequently asked(5)

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