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NVD / CVE Program· CNA Linux

CVE-2024-36883: net: fix out-of-bounds access in ops_init

Noroxi assessment

Priority: Monitor (action score 28/100)

  • 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: 0.31% (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 0c3248bc708a7797be573214065cf908ff1f54c7, 2d60ff5874aefd006717ca5e22ac1e25eac29c42, 3.1.

Low priority for now. Upgrade to Linux Linux 0c3248bc708a7797be573214065cf908ff1f54c7, 2d60ff5874aefd006717ca5e22ac1e25eac29c42, 3.1 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: net: fix out-of-bounds access in ops_init net_alloc_generic is called by net_alloc, which is called without any locking. It reads max_gen_ptrs, which is changed under pernet_ops_rwsem. It is read twice, first to allocate an array, then to set s.len, which is later used to limit the bounds of the array access. It is possible that the array is allocated and another thread is registering a new pernet ops, increments max_gen_ptrs, which is then used to set s.len with a larger than allocated length for the variable array. Fix it by reading max_gen_ptrs only once in net_alloc_generic. If max_gen_ptrs is later incremented, it will be caught in net_assign_generic.

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
May 30, 2024
Updated
Aug 5, 2026
EPSS
0.3% · 23th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.1
CNA · Linux
7.8
0.7 point gap

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

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
debiandebian linux

Affected versions

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 kernel3.2.3 and later · before 3.3
  • linux linux kernel3.3.1 and later · before 4.19.314
  • linux linux kernel4.20 and later · before 5.4.276
  • linux linux kernel5.5 and later · before 5.10.217
  • linux linux kernel5.11 and later · before 5.15.159
  • linux linux kernel3.0.19 and later · before 3.1
  • linux linux kernel6.2 and later · before 6.6.31
  • linux linux kernel6.7 and later · before 6.8.10
  • linux linux kernel5.16 and later · before 6.1.91
  • linux linux kernel3.3
  • linux linux kernel6.9

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

    • 561331eae0a03d0c4cf60f3cf485aa3e8aa5ab48, a2c82f7bee1ffa9eafa1fb0bd886a7eea8c9e497, 3.3affected
    • 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 and later · before 3cdc34d76c4f777579e28ad373979d36c030cfd3affected · git
    • 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 and later · before 7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41faffected · git
    • 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 and later · before 0c3248bc708a7797be573214065cf908ff1f54c7affected · git
    • 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 and later · before 9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030affected · git
    • 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 and later · before 2d60ff5874aefd006717ca5e22ac1e25eac29c42affected · git
    • 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 and later · before b6dbfd5bcc267a95a0bf1bf96af46243f96ec6cdaffected · git
    • 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 and later · before f4f94587e1bf87cb40ec33955a9d90148dd026abaffected · git
    • 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 and later · before a26ff37e624d12e28077e5b24d2b264f62764ad6affected · git
    • 3.0.19 and later · before 3.1affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:9bpftoolbefore 7.3.0-427.35.1.el9_47.3.0-427.35.1.el9_4
AlmaLinux:9kernelbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64kbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-corebefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-debugbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-develbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-corebefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-cross-headersbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-debugbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-debug-corebefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-debug-develbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.el9_4
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-427.35.1.el9_45.14.0-427.35.1.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-2024-36881May 30, 2024 · mm/userfaultfd: reset ptes when close() for wr-protected ones
    22Monitor
  • ← EarlierCVE-2024-36882May 30, 2024 · mm: use memalloc_nofs_save() in page_cache_ra_order()
    22Monitor
  • Later →CVE-2024-36884May 30, 2024 · iommu/arm-smmu: Use the correct type in nvidia_smmu_context_fault()
    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 Linux0c3248bc708a7797be573214065cf908ff1f54c7Vendor (CNA)
Linux Linux2d60ff5874aefd006717ca5e22ac1e25eac29c42Vendor (CNA)
Linux Linux3.1Vendor (CNA)
Linux Linux3.3Vendor (CNA)
Linux Linux3cdc34d76c4f777579e28ad373979d36c030cfd3Vendor (CNA)
Linux Linux7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41fVendor (CNA)
Linux Linux9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030Vendor (CNA)
Linux Linuxa26ff37e624d12e28077e5b24d2b264f62764ad6Vendor (CNA)
Linux Linuxb6dbfd5bcc267a95a0bf1bf96af46243f96ec6cdVendor (CNA)
Linux Linuxf4f94587e1bf87cb40ec33955a9d90148dd026abVendor (CNA)
almalinux:bpftool7.3.0-427.35.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel5.14.0-427.35.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-427.35.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-427.35.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-427.35.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-427.35.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-427.35.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-427.35.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-427.35.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-427.35.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-427.35.1.el9_4 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-427.35.1.el9_4 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.94-1 · Debian:12Package registry (OSV)
debian:linux-5.105.10.218-1~deb10u1 · Debian:10Package registry (OSV)
opensuse:kernel-azure6.4.0-150600.8.20.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-rt6.4.0-150600.10.20.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-rt_debug6.4.0-150600.10.20.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-source-azure6.4.0-150600.8.20.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-source-rt6.4.0-150600.10.20.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-syms-azure6.4.0-150600.8.20.1 · openSUSE:Leap 15.6Package registry (OSV)

+26

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).

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
high · data can be read
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
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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

—

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