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NVD / CVE Program· CNA Linux

CVE-2023-53777: erofs: kill hooked chains to avoid loops on deduplicated compressed images

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.19% (FIRST EPSS).
  • Fixed version: Linux Linux 10c2b98a40d9044a3e97f4697ca6213bad7e19c2, 967c28b23f6c89bb8eef6a046ea88afe0d7c1029, b5b0d52f00e4bacb0ebdf47cd7016b0485fffad2.

Low priority for now. Upgrade to Linux Linux 10c2b98a40d9044a3e97f4697ca6213bad7e19c2, 967c28b23f6c89bb8eef6a046ea88afe0d7c1029, b5b0d52f00e4bacb0ebdf47cd7016b0485fffad2 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: erofs: kill hooked chains to avoid loops on deduplicated compressed images After heavily stressing EROFS with several images which include a hand-crafted image of repeated patterns for more than 46 days, I found two chains could be linked with each other almost simultaneously and form a loop so that the entire loop won't be submitted. As a consequence, the corresponding file pages will remain locked forever. It can be _only_ observed on data-deduplicated compressed images. For example, consider two chains with five pclusters in total: Chain 1: 2->3->4->5 -- The tail pcluster is 5; Chain 2: 5->1->2 -- The tail pcluster is 2. Chain 2 could link to Chain 1 with pcluster 5; and Chain 1 could link to Chain 2 at the same time with pcluster 2. Since hooked chains are all linked locklessly now, I have no idea how to simply avoid the race. Instead, let's avoid hooked chains completely until I could work out a proper way to fix this and end users finally tell us that it's needed to add it back. Actually, this optimization can be found with multi-threaded workloads (especially even more often on deduplicated compressed images), yet I'm not sure about the overall system impacts of not having this compared with implementation complexity.

—No exploit Fix available
Published
Dec 8, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 9th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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Noroxi analysis

What does it mean in your environment?

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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.

—

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

    • 6.0affected
    • 267f2492c8f71dac44399988b510f9bf6b074a51 and later · before d3b39ea24835ac03da1a30f93ae7c05d55a40191affected · git
    • 267f2492c8f71dac44399988b510f9bf6b074a51 and later · before b5b0d52f00e4bacb0ebdf47cd7016b0485fffad2affected · git
    • 267f2492c8f71dac44399988b510f9bf6b074a51 and later · before 10c2b98a40d9044a3e97f4697ca6213bad7e19c2affected · git
    • 267f2492c8f71dac44399988b510f9bf6b074a51 and later · before 967c28b23f6c89bb8eef6a046ea88afe0d7c1029affected · git
    • before 6.0not affected · semver
    • 6.1.39 and later · up to and including 6.1.*not affected · semver
    • 6.3.13 and later · up to and including 6.3.*not affected · semver
    • 6.4.4 and later · up to and including 6.4.*not affected · semver
    • 6.5 and laternot affected · original_commit_for_fix

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.52-16.1.52-1
Debian:13linuxbefore 6.4.4-16.4.4-1
openSUSE:Leap 15.6dtb-aarch64before 6.4.0-150600.23.84.16.4.0-150600.23.84.1
openSUSE:Leap 15.6kernel-64kbbefore 6.4.0-150600.23.84.16.4.0-150600.23.84.1
openSUSE:Leap 15.6kernel-debugbefore 6.4.0-150600.23.84.16.4.0-150600.23.84.1
openSUSE:Leap 15.6kernel-defaultbefore 6.4.0-150600.23.84.16.4.0-150600.23.84.1
openSUSE:Leap 15.6kernel-default-basebefore 6.4.0-150600.23.84.1.150600.12.38.16.4.0-150600.23.84.1.150600.12.38.1
openSUSE:Leap 15.6kernel-docsbefore 6.4.0-150600.23.84.16.4.0-150600.23.84.1
openSUSE:Leap 15.6kernel-kvmsmallbefore 6.4.0-150600.23.84.16.4.0-150600.23.84.1
openSUSE:Leap 15.6kernel-obs-buildbefore 6.4.0-150600.23.84.16.4.0-150600.23.84.1
openSUSE:Leap 15.6kernel-obs-qabefore 6.4.0-150600.23.84.16.4.0-150600.23.84.1
openSUSE:Leap 15.6kernel-sourcebefore 6.4.0-150600.23.84.16.4.0-150600.23.84.1
openSUSE:Leap 15.6kernel-symsbefore 6.4.0-150600.23.84.16.4.0-150600.23.84.1
openSUSE:Leap 15.6kernel-zfcpdumpbefore 6.4.0-150600.23.84.16.4.0-150600.23.84.1
SUSE:Linux Enterprise Live Patching 15 SP6kernel-defaultbefore 6.4.0-150600.23.84.16.4.0-150600.23.84.1
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_19before 1-150600.13.3.11-150600.13.3.1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7_Update_8before 1-150700.15.3.11-150700.15.3.1
SUSE:Linux Enterprise Live Patching 15 SP7kernel-livepatch-SLE15-SP7-RT_Update_8before 1-150700.1.3.11-150700.1.3.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7kernel-64kbbefore 6.4.0-150700.53.28.16.4.0-150700.53.28.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7kernel-defaultbefore 6.4.0-150700.53.28.16.4.0-150700.53.28.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7kernel-default-basebefore 6.4.0-150700.53.28.1.150700.17.19.16.4.0-150700.53.28.1.150700.17.19.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7kernel-sourcebefore 6.4.0-150700.53.28.16.4.0-150700.53.28.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7kernel-zfcpdumpbefore 6.4.0-150700.53.28.16.4.0-150700.53.28.1
SUSE:Linux Enterprise Module for Development Tools 15 SP7kernel-docsbefore 6.4.0-150700.53.28.16.4.0-150700.53.28.1

+21

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2022-50655Dec 8, 2025 · ppp: associate skb with a device at tx
    0Monitor
  • ← EarlierCVE-2022-50656Dec 8, 2025 · nfc: pn533: Clear nfc_target before being used
    32Monitor
  • Later →CVE-2023-53778Dec 8, 2025 · accel/qaic: Clean up integer overflow checking in map_user_pages()
    31Monitor

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 Linux10c2b98a40d9044a3e97f4697ca6213bad7e19c2Vendor (CNA)
Linux Linux967c28b23f6c89bb8eef6a046ea88afe0d7c1029Vendor (CNA)
Linux Linuxb5b0d52f00e4bacb0ebdf47cd7016b0485fffad2Vendor (CNA)
Linux Linuxd3b39ea24835ac03da1a30f93ae7c05d55a40191Vendor (CNA)
debian:linux6.1.52-1 · Debian:12Package registry (OSV)
opensuse:dtb-aarch646.4.0-150600.23.84.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-64kb6.4.0-150600.23.84.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-debug6.4.0-150600.23.84.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default6.4.0-150600.23.84.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default-base6.4.0-150600.23.84.1.150600.12.38.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-docs6.4.0-150600.23.84.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-kvmsmall6.4.0-150600.23.84.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-build6.4.0-150600.23.84.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-qa6.4.0-150600.23.84.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-source6.4.0-150600.23.84.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-syms6.4.0-150600.23.84.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-zfcpdump6.4.0-150600.23.84.1 · openSUSE:Leap 15.6Package registry (OSV)
suse:kernel-64kb6.4.0-150600.23.84.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)
suse:kernel-azure6.4.0-150700.20.24.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP7Package registry (OSV)
suse:kernel-default6.4.0-150600.23.84.1 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)
suse:kernel-default-base6.4.0-150600.23.84.1.150600.12.38.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)
suse:kernel-docs6.4.0-150600.23.84.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)
suse:kernel-livepatch-SLE15-SP6_Update_191-150600.13.3.1 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)
suse:kernel-livepatch-SLE15-SP7-RT_Update_81-150700.1.3.1 · SUSE:Linux Enterprise Live Patching 15 SP7Package registry (OSV)
suse:kernel-obs-build6.4.0-150600.23.84.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)
suse:kernel-rt6.4.0-150700.7.28.1 · SUSE:Real Time Module 15 SP7Package registry (OSV)
suse:kernel-source6.4.0-150600.23.84.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)
suse:kernel-source-azure6.4.0-150700.20.24.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP7Package registry (OSV)
suse:kernel-source-rt6.4.0-150700.7.28.1 · SUSE:Real Time Module 15 SP7Package registry (OSV)
suse:kernel-syms6.4.0-150600.23.84.1 · SUSE:Linux Enterprise Server 15 SP6-LTSSPackage registry (OSV)

+3

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).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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 (3 more)

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

All records