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NVD / CVE Program· CNA Linux

CVE-2023-52696: powerpc/powernv: Add a null pointer check in opal_powercap_init()

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.82% (FIRST EPSS); higher than 57.3% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Linux Linux 69f95c5e9220f77ce7c540686b056c2b49e9a664, 6b58d16037217d0c64a2a09b655f370403ec7219, 9da4a56dd3772570512ca58aa8832b052ae910dc; azl3 kernel 6.6.14.1-1 on Azure Linux 3.0 6.6.14.1-1; azl3 kernel 6.6.82.1-1 on Azure Linux 3.0 6.6.82.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 69f95c5e9220f77ce7c540686b056c2b49e9a664, 6b58d16037217d0c64a2a09b655f370403ec7219, 9da4a56dd3772570512ca58aa8832b052ae910dc; azl3 kernel 6.6.14.1-1 on Azure Linux 3.0 6.6.14.1-1; azl3 kernel 6.6.82.1-1 on Azure Linux 3.0 6.6.82.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: powerpc/powernv: Add a null pointer check in opal_powercap_init() kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
May 17, 2024
Updated
Jun 17, 2026
EPSS
0.8% · 57th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.8%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-52696

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux10.0
  • linux linux kernel5.5 and later · before 5.10.209
  • linux linux kernel5.11 and later · before 5.15.148
  • linux linux kernel4.20 and later · before 5.4.268
  • linux linux kernel6.2 and later · before 6.6.14
  • linux linux kernel6.7 and later · before 6.7.2
  • linux linux kernel5.16 and later · before 6.1.75

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.20affected
    • b9ef7b4b867f56114bedbe6bf104cfaba0ca818e and later · before 9da4a56dd3772570512ca58aa8832b052ae910dcaffected · git
    • b9ef7b4b867f56114bedbe6bf104cfaba0ca818e and later · before a67a04ad05acb56640798625e73fa54d6d41cce1affected · git
    • b9ef7b4b867f56114bedbe6bf104cfaba0ca818e and later · before 6b58d16037217d0c64a2a09b655f370403ec7219affected · git
    • b9ef7b4b867f56114bedbe6bf104cfaba0ca818e and later · before f152a6bfd187f67afeffc9fd68cbe46f51439be0affected · git
    • b9ef7b4b867f56114bedbe6bf104cfaba0ca818e and later · before 69f95c5e9220f77ce7c540686b056c2b49e9a664affected · git
    • b9ef7b4b867f56114bedbe6bf104cfaba0ca818e and later · before b02ecc35d01a76b4235e008d2dd292895b28ecabaffected · git
    • b9ef7b4b867f56114bedbe6bf104cfaba0ca818e and later · before e123015c0ba859cf48aa7f89c5016cc6e98e018daffected · git
    • before 4.20not affected · semver
    • 5.4.268 and later · up to and including 5.4.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.76-16.1.76-1
Debian:13linuxbefore 6.6.15-16.6.15-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2023-52694May 17, 2024 · drm/bridge: tpd12s015: Drop buggy __exit annotation for remove function
    22Monitor
  • ← EarlierCVE-2023-52695May 17, 2024 · drm/amd/display: Check writeback connectors in create_validate_stream_for_sink
    22Monitor
  • Later →CVE-2023-52697May 17, 2024 · ASoC: Intel: sof_sdw_rt_sdca_jack_common: ctx->headset_codec_dev = NULL
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux69f95c5e9220f77ce7c540686b056c2b49e9a664Vendor (CNA)
Linux Linux6b58d16037217d0c64a2a09b655f370403ec7219Vendor (CNA)
Linux Linux9da4a56dd3772570512ca58aa8832b052ae910dcVendor (CNA)
Linux Linuxa67a04ad05acb56640798625e73fa54d6d41cce1Vendor (CNA)
Linux Linuxb02ecc35d01a76b4235e008d2dd292895b28ecabVendor (CNA)
Linux Linuxe123015c0ba859cf48aa7f89c5016cc6e98e018dVendor (CNA)
Linux Linuxf152a6bfd187f67afeffc9fd68cbe46f51439be0Vendor (CNA)
azl3 kernel 6.6.14.1-1 on Azure Linux 3.06.6.14.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 kernel 6.6.82.1-1 on Azure Linux 3.06.6.82.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.148.1-1 on CBL Mariner 2.05.15.148.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.176.3-3 on CBL Mariner 2.0CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.76-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records