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NVD / CVE Program· CNA Linux

CVE-2023-52654: io_uring/af_unix: disable sending io_uring over sockets

Noroxi assessment

Priority: Monitor (action score 18/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.89% (FIRST EPSS); higher than 59.6% of all records.
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: Linux Linux 18824f592aad4124d79751bbc1500ea86ac3ff29, 3fe1ea5f921bf5b71cbfdc4469fb96c05936610e, 5.10.204; azl3 hyperv-daemons 6.6.22.1-2 on Azure Linux 3.0 6.6.35.1-1; azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.0 6.6.35.1-1.
  • Severity is disputed: the assigning authority (CNA) scores it 7.8, NVD 4.7.

Low priority for now. Upgrade to Linux Linux 18824f592aad4124d79751bbc1500ea86ac3ff29, 3fe1ea5f921bf5b71cbfdc4469fb96c05936610e, 5.10.204; azl3 hyperv-daemons 6.6.22.1-2 on Azure Linux 3.0 6.6.35.1-1; azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.0 6.6.35.1-1 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: io_uring/af_unix: disable sending io_uring over sockets File reference cycles have caused lots of problems for io_uring in the past, and it still doesn't work exactly right and races with unix_stream_read_generic(). The safest fix would be to completely disallow sending io_uring files via sockets via SCM_RIGHT, so there are no possible cycles invloving registered files and thus rendering SCM accounting on the io_uring side unnecessary.

MediumCVSS 4.7 · v3.1—Proof of concept Fix available
Published
May 14, 2024
Updated
Aug 5, 2026
EPSS
0.8% · 59th percentile
CWE
—

Report tools

JSON

Action score

18

Monitor

Low priority for now.

CVSS
18 / 40 · 4.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.8%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
4.7
CNA · Linux
7.8
3.1 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

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

Follow CVE-2023-52654

When you'll hear from us

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  • 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 kernel5.4.220 and later · before 5.4.264
  • linux linux kernel5.10.150 and later · before 5.10.204
  • linux linux kernel5.15.75 and later · before 5.15.143
  • linux linux kernel5.19.17 and later · before 5.20
  • linux linux kernel6.0.3 and later · before 6.1.68
  • linux linux kernel6.2 and later · before 6.6.7
  • linux linux kernel6.7

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

    • b4293c01ee0d0ecdd3cb5801e13f62271144667a, 75e94c7e8859e58aadc15a98cc9704edff47d4f2, 6.1affected
    • 04df9719df1865f6770af9bc7880874af0e594b2 and later · before 18824f592aad4124d79751bbc1500ea86ac3ff29affected · git
    • c378c479c5175833bb22ff71974cda47d7b05401 and later · before 3fe1ea5f921bf5b71cbfdc4469fb96c05936610eaffected · git
    • 813d8fe5d30388f73a21d3a2bf46b0a1fd72498c and later · before bcedd497b3b4a0be56f3adf7c7542720eced0792affected · git
    • 0091bfc81741b8d3aeb3b7ab8636f911b2de6e80 and later · before f2f57f51b53be153a522300454ddb3887722fb2caffected · git
    • 0091bfc81741b8d3aeb3b7ab8636f911b2de6e80 and later · before 5a33d385eb36991a91e3dddb189d8679e2aac2beaffected · git
    • 0091bfc81741b8d3aeb3b7ab8636f911b2de6e80 and later · before 705318a99a138c29a512a72c3e0043b3cd7f55f4affected · git
    • 5.4.220 and later · before 5.4.264affected · semver
    • 5.10.150 and later · before 5.10.204affected · semver
    • 5.15.75 and later · before 5.15.143affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.69-16.1.69-1
Debian:13linuxbefore 6.6.8-16.6.8-1
openSUSE:Leap 15.6dtb-aarch64before 6.4.0-150600.23.7.16.4.0-150600.23.7.1
openSUSE:Leap 15.6kernel-64kbbefore 6.4.0-150600.23.7.36.4.0-150600.23.7.3
openSUSE:Leap 15.6kernel-debugbefore 6.4.0-150600.23.7.36.4.0-150600.23.7.3
openSUSE:Leap 15.6kernel-defaultbefore 6.4.0-150600.23.7.36.4.0-150600.23.7.3
openSUSE:Leap 15.6kernel-default-basebefore 6.4.0-150600.23.7.3.150600.12.2.76.4.0-150600.23.7.3.150600.12.2.7
openSUSE:Leap 15.6kernel-docsbefore 6.4.0-150600.23.7.46.4.0-150600.23.7.4
openSUSE:Leap 15.6kernel-kvmsmallbefore 6.4.0-150600.23.7.36.4.0-150600.23.7.3
openSUSE:Leap 15.6kernel-obs-buildbefore 6.4.0-150600.23.7.36.4.0-150600.23.7.3
openSUSE:Leap 15.6kernel-obs-qabefore 6.4.0-150600.23.7.16.4.0-150600.23.7.1
openSUSE:Leap 15.6kernel-sourcebefore 6.4.0-150600.23.7.26.4.0-150600.23.7.2
openSUSE:Leap 15.6kernel-symsbefore 6.4.0-150600.23.7.16.4.0-150600.23.7.1
openSUSE:Leap 15.6kernel-zfcpdumpbefore 6.4.0-150600.23.7.36.4.0-150600.23.7.3
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_1before 1-150600.13.3.71-150600.13.3.7
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-64kbbefore 6.4.0-150600.23.7.36.4.0-150600.23.7.3
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-defaultbefore 6.4.0-150600.23.7.36.4.0-150600.23.7.3
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-default-basebefore 6.4.0-150600.23.7.3.150600.12.2.76.4.0-150600.23.7.3.150600.12.2.7
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-sourcebefore 6.4.0-150600.23.7.26.4.0-150600.23.7.2
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-zfcpdumpbefore 6.4.0-150600.23.7.36.4.0-150600.23.7.3
SUSE:Linux Enterprise Module for Development Tools 15 SP6kernel-docsbefore 6.4.0-150600.23.7.46.4.0-150600.23.7.4
SUSE:Linux Enterprise Module for Development Tools 15 SP6kernel-obs-buildbefore 6.4.0-150600.23.7.36.4.0-150600.23.7.3
SUSE:Linux Enterprise Module for Development Tools 15 SP6kernel-symsbefore 6.4.0-150600.23.7.16.4.0-150600.23.7.1

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-2022-48705May 3, 2024 · wifi: mt76: mt7921e: fix crash in chip reset fail
    22Monitor
  • ← EarlierCVE-2021-34981May 7, 2024 · Linux Kernel Bluetooth CMTP Module Double Free Privilege Escalation Vulnerability
    26Monitor
  • Later →CVE-2023-52655May 14, 2024 · usb: aqc111: check packet for fixup for true limit
    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 Linux18824f592aad4124d79751bbc1500ea86ac3ff29Vendor (CNA)
Linux Linux3fe1ea5f921bf5b71cbfdc4469fb96c05936610eVendor (CNA)
Linux Linux5.10.204Vendor (CNA)
Linux Linux5.15.143Vendor (CNA)
Linux Linux5.20Vendor (CNA)
Linux Linux5.4.264Vendor (CNA)
Linux Linux5a33d385eb36991a91e3dddb189d8679e2aac2beVendor (CNA)
Linux Linux6.1Vendor (CNA)
Linux Linux705318a99a138c29a512a72c3e0043b3cd7f55f4Vendor (CNA)
Linux Linuxbcedd497b3b4a0be56f3adf7c7542720eced0792Vendor (CNA)
Linux Linuxf2f57f51b53be153a522300454ddb3887722fb2cVendor (CNA)
azl3 hyperv-daemons 6.6.22.1-2 on Azure Linux 3.06.6.35.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 hyperv-daemons 6.6.35.1-1 on Azure Linux 3.06.6.35.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.69-1 · Debian:12Package registry (OSV)
opensuse:dtb-aarch646.4.0-150600.23.7.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-64kb6.4.0-150600.23.7.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-debug6.4.0-150600.23.7.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default6.4.0-150600.23.7.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default-base6.4.0-150600.23.7.3.150600.12.2.7 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-docs6.4.0-150600.23.7.4 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-kvmsmall6.4.0-150600.23.7.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-build6.4.0-150600.23.7.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-qa6.4.0-150600.23.7.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-source6.4.0-150600.23.7.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-syms6.4.0-150600.23.7.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-zfcpdump6.4.0-150600.23.7.3 · openSUSE:Leap 15.6Package registry (OSV)
suse:kernel-64kb6.4.0-150600.23.7.3 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-default6.4.0-150600.23.7.3 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-default-base6.4.0-150600.23.7.3.150600.12.2.7 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-docs6.4.0-150600.23.7.4 · SUSE:Linux Enterprise Module for Development Tools 15 SP6Package registry (OSV)

+5

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:02024-05-09

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.

  1. First PoC-5 d
  2. Published
  3. TodayNov 10, 2026+910 d

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).

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.
  • Special conditions such as timing or configuration are required.

If successful

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

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:H/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