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NVD / CVE Program· CNA Linux

CVE-2023-53861: ext4: correct grp validation in ext4_mb_good_group

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: 0.24% (FIRST EPSS).
  • Fixed version: Linux Linux 245759d987b617d183061db6ab8886ebb5cc78e9, 3e24082f16825279054a2b8a5e668d65070bbf07, 5.10.195.

Low priority for now. Upgrade to Linux Linux 245759d987b617d183061db6ab8886ebb5cc78e9, 3e24082f16825279054a2b8a5e668d65070bbf07, 5.10.195 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: ext4: correct grp validation in ext4_mb_good_group Group corruption check will access memory of grp and will trigger kernel crash if grp is NULL. So do NULL check before corruption check.

—No exploit Fix available
Published
Dec 9, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 15th 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 · 0.2%

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

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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

    • 31668cebf45adfb6283e465e641c4f5a21b07afa, 6.4affected
    • 100c0ad6c04597fefeaaba2bb1827cc015d95067 and later · before 245759d987b617d183061db6ab8886ebb5cc78e9affected · git
    • 620a3c28221bb219b81bc0bffd065cc187494302 and later · before 3e24082f16825279054a2b8a5e668d65070bbf07affected · git
    • b4319e457d6e3fb33e443efeaf4634fc36e8a9ed and later · before 772ca4bc1d0d21320ef2ecc0f9e4f90ea85a035daffected · git
    • 5354b2af34064a4579be8bc0e2f15a7b70f14b5f and later · before 83a9d5f5ec7e75640b1ba0bbd77a4888df798bb4affected · git
    • 5354b2af34064a4579be8bc0e2f15a7b70f14b5f and later · before e69d665987db0e37896adf78a7e718f9a0a75d3faffected · git
    • 5354b2af34064a4579be8bc0e2f15a7b70f14b5f and later · before a9ce5993a0f5c0887c8a1b4ffa3b8046fbcfdc93affected · git
    • 5.10.181 and later · before 5.10.195affected · semver
    • 5.15.113 and later · before 5.15.132affected · semver
    • 6.1.30 and later · before 6.1.53affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.55-16.1.55-1
Debian:13linuxbefore 6.5.3-16.5.3-1
Red Hat:rhel_eus:9.4::appstreambpftool-debuginfobefore 0:7.3.0-427.47.1.el9_40:7.3.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debug-debuginfobefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debug-develbefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debug-devel-matchedbefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debuginfobefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-develbefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-devel-matchedbefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debug-debuginfobefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debug-develbefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debug-devel-matchedbefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfobefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-aarch64before 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-ppc64lebefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-s390xbefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-x86_64before 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-develbefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-devel-matchedbefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-docbefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-rt-debug-debuginfobefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-rt-debuginfobefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-tools-debuginfobefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-zfcpdump-debuginfobefore 0:5.14.0-427.47.1.el9_40:5.14.0-427.47.1.el9_4

+56

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-2023-53859Dec 9, 2025 · s390/idle: mark arch_cpu_idle() noinstr
    0Monitor
  • ← EarlierCVE-2023-53860Dec 9, 2025 · dm: don't attempt to queue IO under RCU protection
    31Monitor
  • Later →CVE-2023-53862Dec 9, 2025 · hfs: fix missing hfs_bnode_get() in __hfs_bnode_create
    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 Linux245759d987b617d183061db6ab8886ebb5cc78e9Vendor (CNA)
Linux Linux3e24082f16825279054a2b8a5e668d65070bbf07Vendor (CNA)
Linux Linux5.10.195Vendor (CNA)
Linux Linux5.15.132Vendor (CNA)
Linux Linux6.1.53Vendor (CNA)
Linux Linux6.4Vendor (CNA)
Linux Linux772ca4bc1d0d21320ef2ecc0f9e4f90ea85a035dVendor (CNA)
Linux Linux83a9d5f5ec7e75640b1ba0bbd77a4888df798bb4Vendor (CNA)
Linux Linuxa9ce5993a0f5c0887c8a1b4ffa3b8046fbcfdc93Vendor (CNA)
Linux Linuxe69d665987db0e37896adf78a7e718f9a0a75d3fVendor (CNA)
debian:linux6.1.55-1 · Debian:12Package registry (OSV)
red hat:bpftool-debuginfo0:7.3.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-427.47.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage 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).

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 (5 more)

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

All records