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NVD / CVE Program· CNA Linux

CVE-2024-26878: quota: Fix potential NULL pointer dereference

MediumCVSS 4.7 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 18/100)

  • 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: 0.18% (FIRST EPSS).
  • 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 1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25, 40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5, 49669f8e7eb053f91d239df7b1bfb4500255a9d0.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25, 40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5, 49669f8e7eb053f91d239df7b1bfb4500255a9d0 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: Fix potential NULL pointer dereference Below race may cause NULL pointer dereference P1 P2 dquot_free_inode quota_off drop_dquot_ref remove_dquot_ref dquots = i_dquot(inode) dquots = i_dquot(inode) srcu_read_lock dquots[cnt]) != NULL (1) dquots[type] = NULL (2) spin_lock(&dquots[cnt]->dq_dqb_lock) (3) .... If dquot_free_inode(or other routines) checks inode's quota pointers (1) before quota_off sets it to NULL(2) and use it (3) after that, NULL pointer dereference will be triggered. So let's fix it by using a temporary pointer to avoid this issue.

Published
Apr 17, 2024
Updated
Oct 15, 2026
EPSS
0.1% · 8th percentile

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 · 0.1%

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.

Follow CVE-2024-26878

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  • when exploit code appears or is weaponized
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  • 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
debiandebian linux

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

    • 4.14affected
    • 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac and later · before 8514899c1a4edf802f03c408db901063aa3f05a1affected · git
    • 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac and later · before 49669f8e7eb053f91d239df7b1bfb4500255a9d0affected · git
    • 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac and later · before 61380537aa6dd32d8a723d98b8f1bd1b11d8fee0affected · git
    • 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac and later · before 1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25affected · git
    • 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac and later · before 7f9e833fc0f9b47be503af012eb5903086939754affected · git
    • 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac and later · before 40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5affected · git
    • 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac and later · before f2649d98aa9ca8623149b3cb8df00c944f5655c7affected · git
    • 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac and later · before 6afc9f4434fa8063aa768c2bf5bf98583aee0877affected · git
    • 7b9ca4c61bc278b771fb57d6290a31ab1fc7fdac and later · before d0aa72604fbd80c8aabb46eda00535ed35570f1faffected · git
Affected versions · NVD (9)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux10.0
  • linux linux kernel4.20 and later · before 5.4.273
  • linux linux kernel5.5 and later · before 5.10.214
  • linux linux kernel5.11 and later · before 5.15.153
  • linux linux kernelbefore 4.19.311
  • linux linux kernel6.2 and later · before 6.6.23
  • linux linux kernel6.7 and later · before 6.7.11
  • linux linux kernel6.8 and later · before 6.8.2
  • linux linux kernel5.16 and later · before 6.1.83

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.85-16.1.85-1
Debian:13linuxbefore 6.7.12-16.7.12-1
Red Hat:rhel_eus:9.4::appstreambpftool-debuginfobefore 0:7.3.0-427.83.1.el9_40:7.3.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debug-debuginfobefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debug-develbefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debug-devel-matchedbefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debuginfobefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-develbefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-devel-matchedbefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debug-debuginfobefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debug-develbefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debug-devel-matchedbefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfobefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-aarch64before 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-ppc64lebefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-s390xbefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-x86_64before 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-develbefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-devel-matchedbefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-docbefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-rt-debug-debuginfobefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-rt-debuginfobefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-tools-debuginfobefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-zfcpdump-debuginfobefore 0:5.14.0-427.83.1.el9_40:5.14.0-427.83.1.el9_4

+56

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-2024-26876Apr 17, 2024 · drm/bridge: adv7511: fix crash on irq during probe
    22Monitor
  • ← EarlierCVE-2024-26877Apr 17, 2024 · crypto: xilinx - call finalize with bh disabled
    22Monitor
  • Later →CVE-2024-26880Apr 17, 2024 · dm: call the resume method on internal suspend
    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 Linux1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25Vendor (CNA)
Linux Linux40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5Vendor (CNA)
Linux Linux49669f8e7eb053f91d239df7b1bfb4500255a9d0Vendor (CNA)
Linux Linux61380537aa6dd32d8a723d98b8f1bd1b11d8fee0Vendor (CNA)
Linux Linux6afc9f4434fa8063aa768c2bf5bf98583aee0877Vendor (CNA)
Linux Linux7f9e833fc0f9b47be503af012eb5903086939754Vendor (CNA)
Linux Linux8514899c1a4edf802f03c408db901063aa3f05a1Vendor (CNA)
Linux Linuxd0aa72604fbd80c8aabb46eda00535ed35570f1fVendor (CNA)
Linux Linuxf2649d98aa9ca8623149b3cb8df00c944f5655c7Vendor (CNA)
debian:linux6.1.85-1 · Debian:12Package registry (OSV)
red hat:bpftool-debuginfo0:7.3.0-427.83.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-427.83.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-427.83.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-427.83.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-427.83.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-427.83.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-427.83.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-427.83.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-427.83.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-427.83.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-427.83.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-427.83.1.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.

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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.

ATT&CK techniques

—

References

Show all references (12 more)

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

All records