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NVD / CVE Program· CNA Linux

CVE-2023-52607: powerpc/mm: Fix null-pointer dereference in pgtable_cache_add

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.23% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 145febd85c3bcc5c74d87ef9a598fc7d9122d532, 21e45a7b08d7cd98d6a53c5fc5111879f2d96611, aa28eecb43cac6e20ef14dfc50b8892c1fbcda5b.
  • Mentioned 2 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 145febd85c3bcc5c74d87ef9a598fc7d9122d532, 21e45a7b08d7cd98d6a53c5fc5111879f2d96611, aa28eecb43cac6e20ef14dfc50b8892c1fbcda5b 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/mm: Fix null-pointer dereference in pgtable_cache_add kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure. Ensure the allocation was successful by checking the pointer validity.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Mar 6, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 14th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
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-2023-52607

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

Affected versions

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

  • linux linux kernelbefore 4.19.307
  • linux linux kernel4.20 and later · up to 5.4.269 inclusive
  • linux linux kernel5.5 and later · up to 5.10.210 inclusive
  • linux linux kernel5.11 and later · up to 5.15.149 inclusive
  • linux linux kernel5.16 and later · before 6.1.77
  • linux linux kernel6.2 and later · before 6.6.16
  • linux linux kernel6.7 and later · before 6.7.4

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

    • 2.6.33affected
    • a0668cdc154e54bf0c85182e0535eea237d53146 and later · before 21e45a7b08d7cd98d6a53c5fc5111879f2d96611affected · git
    • a0668cdc154e54bf0c85182e0535eea237d53146 and later · before f6781add1c311c17eff43e14c786004bbacf901eaffected · git
    • a0668cdc154e54bf0c85182e0535eea237d53146 and later · before aa28eecb43cac6e20ef14dfc50b8892c1fbcda5baffected · git
    • a0668cdc154e54bf0c85182e0535eea237d53146 and later · before ac3ed969a40357b0542d20f096a6d43acdfa6cc7affected · git
    • a0668cdc154e54bf0c85182e0535eea237d53146 and later · before d482d61025e303a2bef3733a011b6b740215cfa1affected · git
    • a0668cdc154e54bf0c85182e0535eea237d53146 and later · before 145febd85c3bcc5c74d87ef9a598fc7d9122d532affected · git
    • a0668cdc154e54bf0c85182e0535eea237d53146 and later · before ffd29dc45bc0355393859049f6becddc3ed08f74affected · git
    • a0668cdc154e54bf0c85182e0535eea237d53146 and later · before f46c8a75263f97bda13c739ba1c90aced0d3b071affected · git
    • before 2.6.33not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.82-16.1.82-1
Debian:13linuxbefore 6.7.7-16.7.7-1

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-2023-52604Mar 6, 2024 · FS:JFS:UBSAN:array-index-out-of-bounds in dbAdjTree
    31Monitor
  • ← EarlierCVE-2023-52606Mar 6, 2024 · powerpc/lib: Validate size for vector operations
    22Monitor
  • Later →CVE-2024-26623Mar 6, 2024 · pds_core: Prevent race issues involving the adminq
    18Monitor

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 Linux145febd85c3bcc5c74d87ef9a598fc7d9122d532Vendor (CNA)
Linux Linux21e45a7b08d7cd98d6a53c5fc5111879f2d96611Vendor (CNA)
Linux Linuxaa28eecb43cac6e20ef14dfc50b8892c1fbcda5bVendor (CNA)
Linux Linuxac3ed969a40357b0542d20f096a6d43acdfa6cc7Vendor (CNA)
Linux Linuxd482d61025e303a2bef3733a011b6b740215cfa1Vendor (CNA)
Linux Linuxf46c8a75263f97bda13c739ba1c90aced0d3b071Vendor (CNA)
Linux Linuxf6781add1c311c17eff43e14c786004bbacf901eVendor (CNA)
Linux Linuxffd29dc45bc0355393859049f6becddc3ed08f74Vendor (CNA)
debian:linux6.1.82-1 · 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • 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
Local
Attack complexity
Low
Privileges required
Low
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:L/AC:L/PR:L/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 (8 more)

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

All records