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NVD / CVE Program· CNA Linux

CVE-2024-56780: quota: flush quota_release_work upon quota writeback

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: 0.21% (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 3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb, 4.20, 5.10.231; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1.

Low priority for now. Upgrade to Linux Linux 3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb, 4.20, 5.10.231; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1 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: quota: flush quota_release_work upon quota writeback One of the paths quota writeback is called from is: freeze_super() sync_filesystem() ext4_sync_fs() dquot_writeback_dquots() Since we currently don't always flush the quota_release_work queue in this path, we can end up with the following race: 1. dquot are added to releasing_dquots list during regular operations. 2. FS Freeze starts, however, this does not flush the quota_release_work queue. 3. Freeze completes. 4. Kernel eventually tries to flush the workqueue while FS is frozen which hits a WARN_ON since transaction gets started during frozen state: ext4_journal_check_start+0x28/0x110 [ext4] (unreliable) __ext4_journal_start_sb+0x64/0x1c0 [ext4] ext4_release_dquot+0x90/0x1d0 [ext4] quota_release_workfn+0x43c/0x4d0 Which is the following line: WARN_ON(sb->s_writers.frozen == SB_FREEZE_COMPLETE); Which ultimately results in generic/390 failing due to dmesg noise. This was detected on powerpc machine 15 cores. To avoid this, make sure to flush the workqueue during dquot_writeback_dquots() so we dont have any pending workitems after freeze.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Jan 8, 2025
Updated
Oct 15, 2026
EPSS
0.2% · 12th percentile
CWE
—

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.

CNA vs NVD score

NVD
5.5
CNA · Linux
5.5
agree

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
  • No public exploit code on record
  • A fix has been released

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  • when exploit code appears or is weaponized
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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 kernel4.19.295 and later · before 4.20
  • linux linux kernel5.4.257 and later · before 5.4.287
  • linux linux kernel5.10.195 and later · before 5.10.231
  • linux linux kernel5.15.132 and later · before 5.15.174
  • linux linux kernel6.1.53 and later · before 6.1.120
  • linux linux kernel6.4.16 and later · before 6.5
  • linux linux kernel6.5.3 and later · before 6.6.64
  • linux linux kernel6.7 and later · before 6.12.4
  • linux linux kernel6.13

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

    • f3e9a2bbdeb8987508dd6bb2b701dea911d4daec, 903fc5d8cb48b0d2de7095ef40e39fd32bb27bd0, 31bed65eecbc5ce57592cfe31947eaa64e3d678e, 6.6affected
    • d40c192e119892799dd4ddf94f5cea6fa93775ef and later · before a5abba5e0e586e258ded3e798fe5f69c66fec198affected · git
    • 86d89987f0998c98f57d641e308b40452a994045 and later · before 6f3821acd7c3143145999248087de5fb4b48cf26affected · git
    • 89602de9a2d7080b7a4029d5c1bf8f78d295ff5f and later · before ab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cbaffected · git
    • 3027e200dd58d5b437f16634dbbd355b29ffe0a6 and later · before 3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cbaffected · git
    • dabc8b20756601b9e1cc85a81d47d3f98ed4d13a and later · before bcacb52a985f1b6d280f698a470b873dfe52728aaffected · git
    • dabc8b20756601b9e1cc85a81d47d3f98ed4d13a and later · before 8ea87e34792258825d290f4dc5216276e91cb224affected · git
    • dabc8b20756601b9e1cc85a81d47d3f98ed4d13a and later · before ac6f420291b3fee1113f21d612fa88b628afab5baffected · git
    • 5.4.257 and later · before 5.4.287affected · semver
    • 5.10.195 and later · before 5.10.231affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.123-16.1.123-1
Debian:13linuxbefore 6.12.5-16.12.5-1

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-2024-56770Jan 8, 2025 · net/sched: netem: account for backlog updates from child qdisc
    22Monitor
  • ← EarlierCVE-2024-56779Jan 8, 2025 · nfsd: fix nfs4_openowner leak when concurrent nfsd4_open occur
    22Monitor
  • Later →CVE-2024-41149Jan 11, 2025 · block: avoid to reuse `hctx` not removed from cpuhp callback list
    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 Linux3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cbVendor (CNA)
Linux Linux4.20Vendor (CNA)
Linux Linux5.10.231Vendor (CNA)
Linux Linux5.15.174Vendor (CNA)
Linux Linux5.4.287Vendor (CNA)
Linux Linux6.1.120Vendor (CNA)
Linux Linux6.5Vendor (CNA)
Linux Linux6.6Vendor (CNA)
Linux Linux6f3821acd7c3143145999248087de5fb4b48cf26Vendor (CNA)
Linux Linux8ea87e34792258825d290f4dc5216276e91cb224Vendor (CNA)
Linux Linuxa5abba5e0e586e258ded3e798fe5f69c66fec198Vendor (CNA)
Linux Linuxab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cbVendor (CNA)
Linux Linuxac6f420291b3fee1113f21d612fa88b628afab5bVendor (CNA)
Linux Linuxbcacb52a985f1b6d280f698a470b873dfe52728aVendor (CNA)
azl3 kernel 6.6.57.1-7 on Azure Linux 3.06.6.64.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 kernel 6.6.64.2-1 on Azure Linux 3.06.6.64.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.173.1-2 on CBL Mariner 2.05.15.176.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.173.1-2 on CBL-Mariner 2.05.15.176.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.176.3-1 on CBL Mariner 2.05.15.176.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.123-1 · 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).

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)

—

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 (10 more)

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

All records