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NVD / CVE Program· CNA Linux

CVE-2024-40972: ext4: do not create EA inode under buffer lock

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 0752e7fb549d90c33b4d4186f11cfd25a556d1dd, 0a46ef234756dca04623b7591e8ebb3440622f0b, 111103907234bffd0a34fba070ad9367de058752.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0752e7fb549d90c33b4d4186f11cfd25a556d1dd, 0a46ef234756dca04623b7591e8ebb3440622f0b, 111103907234bffd0a34fba070ad9367de058752 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: do not create EA inode under buffer lock ext4_xattr_set_entry() creates new EA inodes while holding buffer lock on the external xattr block. This is problematic as it nests all the allocation locking (which acquires locks on other buffers) under the buffer lock. This can even deadlock when the filesystem is corrupted and e.g. quota file is setup to contain xattr block as data block. Move the allocation of EA inode out of ext4_xattr_set_entry() into the callers.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jul 12, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 12th 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.

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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 6.1.107
  • linux linux kernel6.2 and later · before 6.6.47
  • linux linux kernel6.7 and later · before 6.9.7

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

    • 4.13affected
    • e50e5129f384ae282adebfb561189cdb19b81cee and later · before 0752e7fb549d90c33b4d4186f11cfd25a556d1ddaffected · git
    • e50e5129f384ae282adebfb561189cdb19b81cee and later · before 737fb7853acd5bc8984f6f42e4bfba3334be8ae1affected · git
    • e50e5129f384ae282adebfb561189cdb19b81cee and later · before 111103907234bffd0a34fba070ad9367de058752affected · git
    • e50e5129f384ae282adebfb561189cdb19b81cee and later · before 0a46ef234756dca04623b7591e8ebb3440622f0baffected · git
    • before 4.13not affected · semver
    • 6.1.107 and later · up to and including 6.1.*not affected · semver
    • 6.6.47 and later · up to and including 6.6.*not affected · semver
    • 6.9.7 and later · up to and including 6.9.*not affected · semver
    • 6.10 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
AlmaLinux:9bpftoolbefore 7.3.0-427.42.1.el9_47.3.0-427.42.1.el9_4
AlmaLinux:9kernelbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64kbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-corebefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-debugbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-develbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-corebefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-cross-headersbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-debugbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-debug-corebefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-debug-develbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-427.42.1.el9_45.14.0-427.42.1.el9_4

+96

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-2024-40969Jul 12, 2024 · f2fs: don't set RO when shutting down f2fs
    22Monitor
  • ← EarlierCVE-2024-40970Jul 12, 2024 · Avoid hw_desc array overrun in dw-axi-dmac
    22Monitor
  • Later →CVE-2024-40973Jul 12, 2024 · media: mtk-vcodec: potential null pointer deference in SCP
    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 Linux0752e7fb549d90c33b4d4186f11cfd25a556d1ddVendor (CNA)
Linux Linux0a46ef234756dca04623b7591e8ebb3440622f0bVendor (CNA)
Linux Linux111103907234bffd0a34fba070ad9367de058752Vendor (CNA)
Linux Linux737fb7853acd5bc8984f6f42e4bfba3334be8ae1Vendor (CNA)
almalinux:bpftool7.3.0-427.42.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel5.14.0-427.42.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-427.42.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-427.42.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-427.42.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-427.42.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-427.42.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-427.42.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-427.42.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-427.42.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-427.42.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-427.42.1.el9_4 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.112-1 · Debian:12Package registry (OSV)
red hat:bpftool-debuginfo0:7.3.0-427.42.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-427.42.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-427.42.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-427.42.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-427.42.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-427.42.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-427.42.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-427.42.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-427.42.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-427.42.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-427.42.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-427.42.1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
rocky linux:kernel0:5.14.0-427.42.1.el9_4 · Rocky Linux:9Package 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-667 · Improper Locking

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.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

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

All records