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NVD / CVE Program· CNA Linux

CVE-2023-52573: net: rds: Fix possible NULL-pointer dereference

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: 0.22% (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 069ac51c37a6f07a51f7134d8c34289075786a35, 51fa66024a5eabf270164f2dc82a48ffb35a12e9, 812da2a08dc5cc75fb71e29083ea20904510ac7a.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 069ac51c37a6f07a51f7134d8c34289075786a35, 51fa66024a5eabf270164f2dc82a48ffb35a12e9, 812da2a08dc5cc75fb71e29083ea20904510ac7a 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: net: rds: Fix possible NULL-pointer dereference In rds_rdma_cm_event_handler_cmn() check, if conn pointer exists before dereferencing it as rdma_set_service_type() argument Found by Linux Verification Center (linuxtesting.org) with SVACE.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Mar 2, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 13th 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-2023-52573

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 kernel5.1 and later · before 5.4.258
  • linux linux kernel5.5 and later · before 5.10.198
  • linux linux kernel5.11 and later · before 5.15.134
  • linux linux kernel5.16 and later · before 6.1.56
  • linux linux kernel6.2 and later · before 6.5.6
  • linux linux kernel6.6

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

    • 5.1affected
    • fd261ce6a30e01ad67c416e2c67e263024b3a6f9 and later · before 812da2a08dc5cc75fb71e29083ea20904510ac7aaffected · git
    • fd261ce6a30e01ad67c416e2c67e263024b3a6f9 and later · before f515112e833791001aaa8ab886af3ca78503617faffected · git
    • fd261ce6a30e01ad67c416e2c67e263024b3a6f9 and later · before ea82139e6e3561100d38d14401d57c0ea93fc07eaffected · git
    • fd261ce6a30e01ad67c416e2c67e263024b3a6f9 and later · before 51fa66024a5eabf270164f2dc82a48ffb35a12e9affected · git
    • fd261ce6a30e01ad67c416e2c67e263024b3a6f9 and later · before 069ac51c37a6f07a51f7134d8c34289075786a35affected · git
    • fd261ce6a30e01ad67c416e2c67e263024b3a6f9 and later · before f1d95df0f31048f1c59092648997686e3f7d9478affected · git
    • before 5.1not affected · semver
    • 5.4.258 and later · up to and including 5.4.*not affected · semver
    • 5.10.198 and later · up to and including 5.10.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.64-16.1.64-1
Debian:13linuxbefore 6.5.6-16.5.6-1

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-2023-52571Mar 2, 2024 · power: supply: rk817: Fix node refcount leak
    28Monitor
  • ← EarlierCVE-2023-52572Mar 2, 2024 · cifs: Fix UAF in cifs_demultiplex_thread()
    31Monitor
  • Later →CVE-2023-52574Mar 2, 2024 · team: fix null-ptr-deref when team device type is changed
    22Monitor

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 Linux069ac51c37a6f07a51f7134d8c34289075786a35Vendor (CNA)
Linux Linux51fa66024a5eabf270164f2dc82a48ffb35a12e9Vendor (CNA)
Linux Linux812da2a08dc5cc75fb71e29083ea20904510ac7aVendor (CNA)
Linux Linuxea82139e6e3561100d38d14401d57c0ea93fc07eVendor (CNA)
Linux Linuxf1d95df0f31048f1c59092648997686e3f7d9478Vendor (CNA)
Linux Linuxf515112e833791001aaa8ab886af3ca78503617fVendor (CNA)
debian:linux6.1.64-1 · 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

  • 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-primary

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 (5 more)

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

All records